CUI NQB-999NWB-DDNL-000-ESA Fully regulated advanced bus converter Datasheet

date 02/20/2013
page
1 of 30
SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
GENERAL CHARACTERISTICS
FEATURES
•
•
•
•
•
•
• industry standard quarter-brick
57.9 x 36.8 x 11.3 mm
(2.28 x 1.45 x 0.445 in)
• industry-leading power density for
telecom and datacom 127~141W / sq. in
• high efficiency, typ. 96.4% at half load,
12 Vout
• fully regulated advanced bus converter
from 36~75Vin
• 2,250 Vdc input to output isolation
• fast feed forward regulation to manage
line transients
• optional baseplate for high temperature
applications
• droop load sharing with 10% current
share accuracy
• 2.9 million hours MTBF
• ISO 9001/14001 certified supplier
industry standard footprint
isolated topology
high power density
fast transient response
high conversion efficiency
wide range of input and output
characteristics available
MODEL
input voltage
output voltage
output current
output wattage
(Vdc)
(Vdc)
max
(A)
max
(W)
NQB-420NWA-AN
36~75
12
35
420
NQB-468NMA-AN
40~60
12
39
468
NQB-415NWB-AN
36~75
12.45
35
415
NQB-462NMB-AN
40~60
12.45
39
462
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 2 of 30
PART NUMBER KEY
NQB- XXX N X X - X X X X - XXX -ES X
Base Number
Engineering Phase:
A~Z
Design Output Power:
1~999
Engineering Sample:
ES
No Digital Interface
Firmware Configuration:
000~ZZZ
Input Voltage Range:
W = wide (36~75 V)
M = medium (40~60 V)
Heatsink Option:
"blank" = open frame
H = heatsink flat
L = heatsink lateral fins
T = heatsink transverse fins
G = heatsink with GND pin
Nominal Output Voltage:
A = 12.0 V
B = 12.45 V
C = 9.6 V
Load Sharing Function:
D = 9.0 V
D = Vout droop
E = 5.0 V
Enable Logic Sense:
N = negative logic
P = positive logic
Pin Description:
A = 5.33 mm (0.210 in.)
B = 4.57 mm (0.180 in.)
C = 3.69 mm (0.145 in.)
D = 2.79 mm (0.110 in.)
S = SMT
Example part number: NQB-420NWA-AN-001
Packaging:
20 converters(through hole pin)/tray, PE foam dissipative
20 converters(surface mount pin)/tray, Antistatic PPE
420 W output power, no digital pins
wide input voltage range, 12.0 V output
5.33 mm pins, negative enable logic
firmware revision 001
CONTENTS
Part Number Key........................................................2
General Information...................................................3
Safety Specification....................................................3
Absolute Maximum Ratings..........................................4
Electrical Specification:
12V, 35A, 420W, 36~75Vin; NQB-420NWA-AN....................5
12 V, 39 A, 468 W, 40~60 Vin; NQB-468NMA-AN..................9
12.45 V, 35 A, 415 W, 36~75 Vin; NQB-415NWB-AN............13
12.45 V, 39 A, 462 W, 40~60 Vin; NQB-420NMB-AN............16
cui.com
EMC Specification.........................................19
Operating Information...................................19
Thermal Consideration..................................21
Connections............................................22
Mechanical Information.................................23
Soldering Information...................................26
Delivery Package Information.........................27
Product Qualification Specification...................29
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 3 of 30
General Information
Reliability
The failure rate (λ) and mean time between failures
(MTBF= 1/ λ) is calculated at max output power and
an operating ambient temperature (TA) of +40°C. CUI
Power Modules uses Telcordia SR-332 Issue 2 Method 1 to
calculate the mean steady-state failure rate and standard
deviation (σ).
Telcordia SR-332 Issue 2 also provides techniques to
estimate the upper confidence levels of failure rates based
on the mean and standard deviation.
Component power supplies for general use should comply
with the requirements in IEC/EN/UL 60950 1 Safety
of Information Technology Equipment. Product related
standards, e.g. IEEE 802.3af Power over Ethernet, and
ETS 300132 2 Power interface at the input to telecom
equipment, operated by direct current (dc) are based on
IEC/EN/UL 60950 1 with regards to safety.
CUI Power Modules DC/DC converters and DC/DC
regulators are UL 60950 1 recognized and certified in
accordance with EN 60950 1. The flammability rating for
all construction parts of the products meet requirements
for V 0 class material according to IEC 60695 11 10, Fire
hazard testing, test flames – 50 W horizontal and vertical
flame test methods.
Mean steady-state failure rate, λ Std. deviation, σ
421 n F ailures/h
the requirements of all applicable safety standards and
regulations for the final product.
60.9 nF ailures/h
MTBF (mean value) for the NQB series = 2.9 Mh.
MTBF at 90% confidence level = 2.4 Mh
Compatibility with RoHS requirements
Isolated DC/DC converters
The products are compatible with the relevant clauses
and requirements of the RoHS directive 2011/65/EU and
have a maximum concentration value of 0.1% by weight
in homogeneous materials for lead, mercury, hexavalent
chromium, PBB and PBDE and of 0.01% by weight in
homogeneous materials for cadmium.
Galvanic isolation between input and output is verified
in an electric strength test and the isolation voltage
(Viso) meets the voltage strength requirement for basic
insulation according to IEC/EN/UL 60950-1.
It is recommended to use a slow blow fuse at the input
of each DC/DC converter. If an input filter is used in the
circuit the fuse should be placed in front of the input filter.
In the rare event of a component problem that imposes a
short circuit on the input source, this fuse will provide the
following functions:
•
Isolate the fault from the input power source so as
not to affect the operation of other parts of the system
•
Protect the distribution wiring from excessive current and power loss thus preventing hazardous
overheating
Exemptions in the RoHS directive utilized in CUI
Power Modules products are found in the Statement of
Compliance document.
Safety Specification
Reliability
CUI Power Modules DC/DC converters and DC/DC
regulators are designed in accordance with the safety
standards IEC 60950 1, EN 60950 1 and UL 60950 1
Safety of Information Technology Equipment.
IEC/EN/UL 60950 1 contains requirements to prevent
injury or damage due to the following hazards:
•
Electrical shock
•
Energy hazards
•
Fire
•
Mechanical and heat hazards
•
Radiation hazards
•
Chemical hazards
On-board DC/DC converters and DC/DC regulators are
defined as component power supplies. As components
they cannot fully comply with the provisions of any
safety requirements without “conditions of acceptability”.
Clearance between conductors and between conductive
parts of the component power supply and conductors on
the board in the final product must meet the applicable
safety requirements. Certain conditions of acceptability
apply for component power supplies with limited stand-off
(see Mechanical Information for further information). It is
the responsibility of the installer to ensure that the final
product housing these components complies with
The DC/DC converter output is considered as safety extra
low voltage (SELV) if one of the following conditions is
met:
•
The input source has double or reinforced insulation from the AC mains according to IEC/EN/
UL 60950-1
•
The input source has basic or supplementary insulation from the AC mains and the input of the DC/DC converter is maximum 60 Vdc and connected to protective earth according to
IEC/EN/UL 60950-1
•
The input source has basic or supplementary insulation from the AC mains and the DC/DC converter output is connected to protective earth
according to IEC/EN/UL 60950-1
Non - isolated DC/DC regulators
The DC/DC regulator output is SELV if the input source
meets the requirements for SELV circuits according to IEC/
EN/UL 60950-1.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 4 of 30
Absolute Maximum Ratings
parameter
conditions/description
min
operating temperature (TP1)
see thermal consideration section
typ
max
units
-40
+125
°C
storage temperature (TS)
-55
+125
°C
input voltage (VI)
-0.5
+80
+65*
V
isolation voltage (Viso)
input to output test voltage, see note 1
2250
Vdc
input voltage transient (Vtr)
according to ETSI EN 300 132-2 and Telcordia GR1089-CORE
+100
+80*
V
remote control pin voltage (VRC)
see operating information section
18
V
-0.3
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as no destruction limits, are normally tested with one
parameter at a time exceeding the limits of Output data or Electrical Characteristics. If exposed to stress above these limits, function and performance may degrade in an unspecified
manner.
Note
1: Isolation voltage (input/output to base-plate) max 750 Vdc.
* Applies for the narrow input version VI= 40-60 V
Fundamental Circuit Diagram
Driver
+IN
+OUT
-OUT
-IN
Auxillary
Supply
Driver
Control
RC
RC isolation
Functional Description
TP1, TP3 = -40 to +90ºC, VI = 36 to 75 V.
Typical values given at: TP1, TP3 = +25°C, VI= 53 V, max IO , unless otherwise specified under Conditions
Configuration File: 190 10-CDA 102 0314/001
parameter
conditions/description
min
typ
max
units
fault protection
characteristics
input under voltage lockout
(UVLO)
fault limit
setpoint accuracy
hysteresis
delay
output voltage - under voltage
protection
fault limit
fault response time
0
200
V
μs
output voltage - over voltage
protection
fault limit
fault response time
15.6
200
V
μs
over current protection (OCP)
setpoint accuracy (IO)
fault limit
fault response time
over temperature protection
(OTP)
fault limit
hysteresis
fault response time
-2
-6
33
2
300
41
200
125
10
300
cui.com
2
6
V
%
V
μs
%
A
μs
ºC
ºC
μs
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 5 of 30
Electrical Specification
12.0 V, 35 A, 420 W
TP1, TP3 = -40 to +90ºC, VI = 36 to 75 V.
Typical values given at: TP1, TP3 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional Cout = 3.5 mF, Configuration File: 19010-CDA 102 0314/001
parameter
conditions/description
min
input voltage range (VI)
typ
36
max
units
75
V
turn-off input voltage (VIoff)
decreasing input voltage
32
33
34
V
turn-on input voltage (VIon)
increasing input voltage
34
35
36
V
internal input capacitance (CI)
18
output power (PO)
0
μF
420
W
efficiency (η)
50% of max IO
max IO
50% of max IO, VI = 48 V
max IO, VI = 48 V
96.2
95.5
96.4
95.5
power dissipation (Pd)
max IO
19.8
input idling power (Pli)
IO = 0 A, VI = 53 V
3.3
W
input standby power (PRC)
VI = 53 V (turned off with RC)
0.4
W
switching frequency (fs)
0-100% of max IO
140
kHz
output voltage setting and accuracy (VOi)
TP1 = +25°C, VI = 53 V, IO = 35 A
11.88
output voltage tolerance band
(VO)
0-100% of max IO
11.76
line regulation (VO)
max IO
load regulation (VO)
VI = 53 V, 0-100% of max IO
load transient voltage deviation
(Vtr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
±0.4
V
load transient recovery time
(ttr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
150
µs
ramp-up time (tr) - (from
10−90% of VOi)
10-100% of max IO, TP1, TP3 = 25ºC, VI = 53 V
8
ms
start-up time (ts) - (from VI
connection to 90% of VOi)
10-100% of max IO, TP1, TP3 = 25ºC, VI = 53 V
24
ms
VI shut-down fall time (tf) (from VI off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
3.6
7
ms
s
RC start-up time (tRC)
max IO
12
ms
RC shut-down fall time (tRC) (from RC off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
5.1
7
ms
s
output current (IO)
12.0
VO = 10.8 V, TP1, TP3 < max TP1, TP3
short circuit current (Isc)
TP1, TP3 = 25ºC, see Note 1
recommended capacitive load
(Cout)
TP1, TP3 = 25ºC, see Note 2
output ripple & noise (VOac)
37
29.5
V
12.24
V
21
55
mV
6
40
mV
41
35
A
44
A
12
A
3.5
6
mF
See ripple & noise section, max IO , see Note 3
60
150
mVp-p
over voltage protection (OVP)
TP1, TP3 = 25°C, VI = 53 V, 10-100% of max IO
15.6
remote control (RC)
sink current (note 4), see operating information
trigger level, decreasing RC-voltage
trigger level, increasing RC-voltage
0.7
mA
V
V
Note
1:
2:
3:
4:
0.1
W
12.12
0
current limit threshold (Ilim)
%
%
%
%
2.6
2.9
OCP in hic-up mode
Low ESR-value
Cout = 100 µF, external capacitance
Sink current drawn by external device connected to the RC pin. Minimum sink current required guaranteeing activated RC function.
cui.com
V
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 6 of 30
Typical Characteristics
12.0 V, 35 A / 420 W
Efficiency
Power Dissipation
[W]
24
[%]
100
20
95
53 V
53 V
8
75 V
80
48 V
12
48 V
85
36 V
16
36 V
90
75 V
4
75
0
0
5
10
15
20
25
30
0
35 [A]
5
10
15
20
25
30
35 [A]
Dissipated power vs. load current and input voltage at
TP1, TP3 = +25°C
Efficiency vs. load current and input voltage at TP1, TP3 = +25 C
Output Characteristics
Current Limit Characteristics
[V]
[V]
13.0
12.2
11.0
12.1
36 V
48 V
12.0
53 V
75 V
11.9
36 V
9.0
48 V
53 V
7.0
75 V
5.0
11.8
0
5
10
15
20
25
30
3.0
35 [A]
35
Output voltage vs. load current at TP1, TP3 = +25°C
37
39
41
43
45 [A]
Output voltage vs. load current at IO > max IO , TP1, TP3 = +25°C
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 7 of 30
Typical Characteristics
12.0 V, 35 A / 420 W
Start-up
Start-up enabled by connecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 35 A resistive load.
Shut-down
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (10 ms/div.).
Output Ripple & Noise
Output voltage ripple at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 35 A resistive load.
Shut-down enabled by disconnecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO =35 A resistive load.
Output Load Transient Response
Trace: output voltage (50 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current
step-change (8.75-26.25-8.75 A) at:
TP1, TP3 =+25°C, VI = 53 V, CO = 3.5 mF.
Input Voltage Transient Response
Output voltage response to input voltage
transient at: TP1, TP3 = +25°C, VI = 36-75 V,
IO = 17 A resistive load, CO = 3.5 mF
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (2 ms/div.).
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.5 ms/div.).
cui.com
Top trace: output voltage (0.5 V/div.).
Bottom trace: output current (20 A/div.).
Time scale: (0.5 ms/div.).
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 8 of 30
Typical Characteristics
12.0 V, 35 A / 420 W
Output Current Derating – Open frame
[A]
35
3.0 m/s
30
2.0 m/s
25
1.5 m/s
20
15
1.0 m/s
10
0.5 m/s
5
Na t. Co nv.
0
0
20
40
60
80
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate
Thermal Resistance – Base plate
[A]
35
[°C/W]
6
3.0 m/s
30
5
2.0 m/s
25
4
1.5 m/s
20
15
1.0 m/s
10
0.5 m/s
5
3
2
1
Na t. Con v.
0
0
0
20
40
60
80
0.0
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
0.5
1.0
1.5
2.0
2.5
3.0 [m/s]
Thermal resistance vs. airspeed measured at the converter. Tested in
wind tunnel with airflow and test conditions as per the Thermal
consideration section. VI = 53 V.
Output Current Derating – Base plate + Heat sink
Output Current Derating – Cold wall sealed box
[A]
35
A
30
25
20
15
10
3.0 m/s
40
35
2.0 m/s
30
1.5 m/s
25
1.0 m/s
20
15
0.5 m/s
10
Na t. Con v.
5
0
0
20
40
60
80
Ta mb
85 °C
5
0
0
100 [°C]
20
40
60
80
100 [°C]
Available load current vs. base plate temperature at 85ºC ambient.
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section. Tested with Plate Fin
Transverse heatsink, height 0.23 In, P0114 Thermal Pad.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 9 of 30
Electrical Specification
12.0 V, 39 A / 468 W
TP1, TP3 = -40 to +90ºC, VI = 40 to 60 V.
Typical values given at: TP1, TP3 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional Cout = 3.9 mF, Configuration File: 19010-CDA 102 0314/002
parameter
conditions/description
min
input voltage range (VI)
typ
40
max
units
60
V
V
turn-off input voltage (VIoff)
decreasing input voltage
36
37
38
turn-on input voltage (VIon)
increasing input voltage
38
39
40
internal input capacitance (CI)
18
output power (PO)
0
V
μF
468
W
efficiency (η)
50% of max IO
max IO
50% of max IO, VI = 48 V
max IO, VI = 48 V
96.7
95.7
96.8
95.6
%
%
%
%
power dissipation (Pd)
max IO
21.2
input idling power (Pli)
IO = 0 A, VI = 53 V
input standby power (PRC)
VI = 53 V (turned off with RC)
0.4
W
switching frequency (fs)
0-100% of max IO
140
kHz
output voltage setting and accuracy (VOi)
TP1 = +25°C, VI = 53 V, IO = 39 A
11.88
output voltage tolerance band
(VO)
0-100% of max IO
11.76
line regulation (VO)
max IO
load regulation (VO)
VI = 53 V, 1-100% of max IO
load transient voltage deviation
(Vtr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
±0.4
V
load transient recovery time
(ttr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
150
µs
ramp-up time (tr) - (from
10−90% of VOi)
10-100% of max IO, TP1 = 25ºC, VI = 53 V
8
ms
start-up time (ts) - (from VI
connection to 90% of VOi)
10-100% of max IO, TP1 = 25ºC, VI = 53 V
24
ms
VI shut-down fall time (tf) (from VI off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
3
7
ms
s
RC start-up time (tRC)
max IO
12
ms
RC shut-down fall time (tRC) (from RC off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
4.5
7
ms
s
30.5
2.8
output current (IO)
12.0
VO = 10.8 V, TP1, TP3 < max TP1, TP3
short circuit current (Isc)
TP1 = 25ºC, see Note 1
recommended capacitive load
(Cout)
TP1 = 25ºC, see Note 2
output ripple & noise (VOac)
41
W
12.12
V
12.24
V
31
60
mV
5
25
mV
0
current limit threshold (Ilim)
44
39
A
47
A
14
A
3.9
6
mF
See ripple & noise section, max IO , see Note 3
50
110
mVp-p
over voltage protection (OVP)
TP1, TP3 = 25°C, VI = 53 V, 10-100% of max IO
15.6
remote control (RC)
sink current (note 4), see operating information
trigger level, decreasing RC-voltage
trigger level, increasing RC-voltage
Note
1:
2:
3:
4:
0.1
W
2.6
2.9
OCP in hic-up mode
Low ESR-value
Cout = 100 µF, external capacitance
Sink current drawn by external device connected to the RC pin. Minimum sink current required guaranteeing activated RC function.
cui.com
V
0.7
mA
V
V
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 10 of 30
Typical Characteristics
12.0 V, 39 A / 468 W
Efficiency
Power Dissipation
[%]
[W]
25
100
20
95
40 V
90
48 V
60 V
80
48 V
53 V
10
53 V
85
40 V
15
60 V
5
0
75
0
5
10
15
20
25
30
35
40 [A]
0
5
10
15
20
25
30
35
40 [A]
Dissipated power vs. load current and input voltage at
TP1, TP3 = +25°C
Efficiency vs. load current and input voltage at TP1, TP3 = +25 C
Output Characteristics
Current Limit Characteristics
[V]
[V]
13.0
12.2
11.0
12.1
40 V
48 V
12.0
53 V
60 V
11.9
40 V
9.0
48 V
7.0
53 V
60 V
5.0
11.8
3.0
0
5
10
15
20
25
30
35
40 [A]
39
Output voltage vs. load current at TP1, TP3 = +25°C
41
43
45
47 [A]
Output voltage vs. load current at IO > max IO , TP1, TP3 = +25°C
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 11 of 30
Typical Characteristics
12.0 V, 39 A / 468 W
Start-up
Start-up enabled by connecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 39 A resistive load.
Shut-down
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (10 ms/div.).
Output Ripple & Noise
Output voltage ripple at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 39 A resistive load.
Shut-down enabled by disconnecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO =39 A resistive load.
Output Load Transient Response
Trace: output voltage (50 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current
step-change (9.75-29.25-9.75 A) at:
TP1, TP3 =+25°C, VI = 53 V, CO = 3.9 mF.
Input Voltage Transient Response
Output voltage response to input voltage
transient at: TP1, TP3 = +25°C, VI = 40-60 V,
IO = 19,5 A resistive load, CO = 3.9 mF
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (2 ms/div.).
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (0.5 ms/div.).
cui.com
Top trace: output voltage (0.5 V/div.).
Bottom trace: output current (20 A/div.).
Time scale: (0.5 ms/div.).
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 12 of 30
Typical Characteristics
12.0 V, 39 A / 468 W
Output Current Derating – Open frame
[A]
40
35
3.0 m/s
30
2.0 m/s
25
1.5 m/s
20
1.0 m/s
15
0.5 m/s
10
Na t. Con v.
5
0
0
20
40
60
80
100
[°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate
Thermal Resistance – Base plate
[A]
40
[°C/W]
6
3.0 m/s
35
30
2.0 m/s
25
1.5 m/s
20
5
4
3
1.0 m/s
15
2
0.5 m/s
10
5
1
Na t. Con v.
0
0
0
20
40
60
80
0.0
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
1.0
1.5
2.0
2.5
3.0[m/s]
Thermal resistance vs. airspeed measured at the converter. Tested
in wind tunnel with airflow and test conditions as per the Thermal
consideration section. VI = 53 V.
Output Current Derating – Base Plate + Heat sink
[A]
40
0.5
Output Current Derating – Cold wall sealed box
A
40
3.0 m/s
35
35
30
2.0 m/s
25
1.5 m/s
25
1.0 m/s
20
20
15
30
15
0.5 m/s
10
5
Ta mb
85 °C
10
Na t. Con v.
5
0
0
0
20
40
60
80
100 [°C]
0
20
40
60
80
100 [°C]
Available load current vs. base plate temperature at 85ºC ambient.
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section. Tested with Plate Fin
Transverse heatsink, height 0.23 In, P0114 Thermal Pad.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 13 of 30
Electrical Specification
12.45 V, 35 A / 415 W
TP1, TP3 = -40 to +90ºC, VI = 36 to 75 V.
Typical values given at: TP1, TP3 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional Cout = 3.9 mF, Configuration File: 19010-CDA 102 0314/014
parameter
conditions/description
min
input voltage range (VI)
typ
36
max
units
75
V
V
turn-off input voltage (VIoff)
decreasing input voltage
32
33
34
turn-on input voltage (VIon)
increasing input voltage
34
35
36
internal input capacitance (CI)
18
output power (PO)
0
V
μF
415
W
efficiency (η)
50% of max IO
max IO
50% of max IO, VI = 48 V
max IO, VI = 48 V
96.2
95.5
96.4
95.5
%
%
%
%
power dissipation (Pd)
max IO
19.5
input idling power (Pli)
IO = 0 A, VI = 53 V
input standby power (PRC)
VI = 53 V (turned off with RC)
0.4
W
switching frequency (fs)
0-100% of max IO
140
kHz
output voltage setting and accuracy (VOi)
TP1 = 25°C, VI = 53 V, IO = 0 A
output voltage tolerance band
(VO)
0-100% of max IO
line regulation (VO)
max IO
load regulation (VO)
VI = 53 V, 0-100% of max IO
load transient voltage deviation
(Vtr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
±0.4
V
load transient recovery time
(ttr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
150
µs
ramp-up time (tr) - (from
10−90% of VOi)
10-100% of max IO, TP1, TP3 = 25ºC, VI = 53 V
23
ms
start-up time (ts) - (from VI
connection to 90% of VOi)
10-100% of max IO, TP1, TP3 = 25ºC, VI = 53 V
39
ms
VI shut-down fall time (tf) (from VI off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
3.6
7
ms
s
RC start-up time (tRC)
max IO
27
ms
RC shut-down fall time (tRC) (from RC off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
5.1
7
ms
s
29.5
3.2
12.415
12.45
output current (IO)
V
12.7
V
20
55
mV
600
700
mV
0
current limit threshold (Ilim)
VO = 10.8 V, TP1, TP3 < max TP1, TP3
short circuit current (Isc)
TP1, TP3 = 25ºC, see Note 1
recommended capacitive load
(Cout)
TP1, TP3 = 25ºC, see Note 2
output ripple & noise (VOac)
37
W
12.485
11.5
500
41
35
A
44
A
12
A
3.5
6
mF
See ripple & noise section, max IO , see Note 3
60
150
mVp-p
over voltage protection (OVP)
TP1, TP3 = 25°C, VI = 53 V, 10-100% of max IO
15.6
remote control (RC)
sink current (note 4), see operating information
trigger level, decreasing RC-voltage
trigger level, increasing RC-voltage
Note
1:
2:
3:
4:
0.1
W
2.6
2.9
OCP in hic-up mode
Low ESR-value
Cout = 100 µF, external capacitance
Sink current drawn by external device connected to the RC pin. Minimum sink current required guaranteeing activated RC function.
cui.com
V
0.7
mA
V
V
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 14 of 30
Typical Characteristics
12.45 V, 63 A / 747 W, two products in parallel
Efficiency
Power Dissipation
[W]
45
[%]
100
40
35
95
36 V
90
48 V
53 V
85
75 V
80
30
36 V
25
48 V
20
53 V
15
75 V
10
5
75
0
0
10
20
30
40
50
60
0
[A]
10
20
30
40
50
60
[A]
Dissipated power vs. load current and input voltage at
TP1, TP3 = +25°C
Efficiency vs. load current and input voltage at TP1, TP3 = +25 C
Output Characteristics
Current Limit Characteristics
[V]
12.5
[V]
13.0
12.4
11.0
12.3
12.2
48 V
75 V
12.0
48 V
53 V
7.0
53 V
12.1
36 V
9.0
36 V
75 V
5.0
11.9
3.0
63
11.8
0
10
20
30
40
50
60
67
69
71
73
75
77
79
81
83 [A]
[A ]
Output voltage vs. load current at TP1, TP3 = +25°C
Start-up
Start-up enabled by connecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 63 A resistive load.
65
Output voltage vs. load current at IO > max IO , TP1, TP3 = +25°C
Output Load Transient Response
Output voltage response to load current Top trace: output voltage (0.5 V/div.).
step-change (15.8-47.3-15.8 A) at:
Bottom trace: output current (20 A/div.).
TP1, TP3 =+25°C, VI = 53 V, CO = 3.5 mF. Time scale: (0.5 ms/div.).
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (10 ms/div.).
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 15 of 30
Typical Characteristics
12.45 V, 35 A / 415 W
Output Current Derating – Open frame
[A]
35
3.0 m/s
30
2.0 m/s
25
1.5 m/s
20
15
1.0 m/s
10
0.5 m/s
5
Na t. Co nv.
0
0
20
40
60
80
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate
Thermal Resistance – Base plate
[°C/W]
[A]
35
6
3.0 m/s
30
5
2.0 m/s
25
4
1.5 m/s
20
15
1.0 m/s
10
0.5 m/s
5
3
2
1
Na t. Con v.
0
0
0
20
40
60
80
0.0
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
0.5
1.0
1.5
2.0
2.5
3.0 [m/s]
Thermal resistance vs. airspeed measured at the converter. Tested in
wind tunnel with airflow and test conditions as per the Thermal
consideration section. VI = 53 V.
Output Current Derating – Base plate + Heat sink
Output Current Derating – Cold wall sealed box
A
[A]
35
30
25
20
15
10
3.0 m/s
40
35
2.0 m/s
30
1.5 m/s
25
1.0 m/s
20
15
0.5 m/s
10
Na t. Con v.
5
0
0
20
40
60
80
Ta mb
85 °C
5
0
0
100 [°C]
20
40
60
80
100 [°C]
Available load current vs. base plate temperature at 85ºC ambient.
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section. Tested with Plate Fin
Transverse heatsink, height 0.23 In, P0114 Thermal Pad.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 16 of 30
Electrical Specification
12.45 V, 39 A / 462 W
TP1, TP3 = -40 to +90ºC, VI = 40 to 60 V.
Typical values given at: TP1, TP3 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional Cout = 3.9 mF, Configuration File: 19010-CDA 102 0314/017
parameter
conditions/description
min
input voltage range (VI)
typ
40
max
units
60
V
turn-off input voltage (VIoff)
decreasing input voltage
36
37
38
V
turn-on input voltage (VIon)
increasing input voltage
38
39
40
V
internal input capacitance (CI)
18
output power (PO)
0
μF
462
W
efficiency (η)
50% of max IO
max IO
50% of max IO, VI = 48 V
max IO, VI = 48 V
96.7
95.7
96.8
95.6
%
%
%
%
power dissipation (Pd)
max IO
21.0
input idling power (Pli)
IO = 0 A, VI = 53 V
input standby power (PRC)
VI = 53 V (turned off with RC)
0.4
W
switching frequency (fs)
0-100% of max IO
140
kHz
output voltage setting and accuracy (VOi)
TP1 = 25°C, VI = 53 V, IO = 0 A
output voltage tolerance band
(VO)
0-100% of max IO
line regulation (VO)
max IO
load regulation (VO)
VI = 53 V, 0-100% of max IO
load transient voltage deviation
(Vtr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
±0.4
V
load transient recovery time
(ttr)
VI = 53 V, load step 25-75-25% of max IO, di/dt =
1 A/μs
150
µs
ramp-up time (tr) - (from
10−90% of VOi)
10-100% of max IO, TP1 = 25ºC, VI = 53 V
23
ms
start-up time (ts) - (from VI
connection to 90% of VOi)
10-100% of max IO, TP1 = 25ºC, VI = 53 V
39
ms
VI shut-down fall time (tf) (from VI off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
3
7
ms
s
RC start-up time (tRC)
max IO
27
ms
RC shut-down fall time (tRC) (from RC off to 10% of VO)
max IO
IO = 0 A, CO = 0 mF
4.5
7
ms
s
30.5
2.8
12.415
12.45
output current (IO)
V
12.7
V
31
60
mV
600
700
mV
0
current limit threshold (Ilim)
VO = 10.8 V, TP1, TP3 < max TP1, TP3
short circuit current (Isc)
TP1 = 25ºC, see Note 1
recommended capacitive load
(Cout)
TP1 = 25ºC, see Note 2
output ripple & noise (VOac)
41
W
12.485
11.5
500
44
39
A
47
A
14
A
3.9
6
mF
See ripple & noise section, max IO , see Note 3
50
110
mVp-p
over voltage protection (OVP)
TP1, TP3 = 25°C, VI = 53 V, 10-100% of max IO
15.6
remote control (RC)
sink current (note 4), see operating information
trigger level, decreasing RC-voltage
trigger level, increasing RC-voltage
0.7
mA
V
V
Note
1:
2:
3:
4:
0.1
W
2.6
2.9
OCP in hic-up mode
Low ESR-value
Cout = 100 µF, external capacitance
Sink current drawn by external device connected to the RC pin. Minimum sink current required guaranteeing activated RC function.
cui.com
V
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 17 of 30
Typical Characteristics
12.45 V, 70 A / 830 W, two products in parallel
Efficiency
Power Dissipation
[%]
[W]
45
100
40
35
95
40 V
90
48 V
53 V
85
60 V
80
30
40 V
25
48 V
20
53 V
15
60 V
10
5
75
0
0
10
20
30
40
50
60
0
70 [A]
10
20
30
40
50
60
70 [A]
Dissipated power vs. load current and input voltage at
TP1, TP3 = +25°C
Efficiency vs. load current and input voltage at TP1, TP3 = +25 C
Output Characteristics
Current Limit Characteristics
12.5
[V]
13.0
12.4
11.0
[V]
12.3
40 V
12.2
48 V
12.1
53 V
12.0
60 V
40 V
9.0
48 V
53 V
7.0
60 V
5.0
11.9
3.0
11.8
0
10
20
30
40
50
60
70
70 [A]
Output voltage vs. load current at TP1, TP3 = +25°C
Start-up
Start-up enabled by connecting VI at:
TP1, TP3 = +25°C, VI = 53 V,
IO = 70 A resistive load.
75
80
85
90 [A]
Output voltage vs. load current at IO > max IO , TP1, TP3 = +25°C
Output Load Transient Response
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (10 ms/div.).
Output voltage response to load current Top trace: output voltage (0.5 V/div.).
step-change (17.5-52.5-17.5 A) at:
Bottom trace: output current (20 A/div.).
TP1, TP3 =+25°C, VI = 53 V, CO = 3.9 mF Time scale: (0.5 ms/div.).
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 18 of 30
Typical Characteristics
12.45 V, 39 A / 462 W
Output Current Derating – Open frame
[A]
40
35
3.0 m/s
30
2.0 m/s
25
1.5 m/s
20
1.0 m/s
15
0.5 m/s
10
Na t. Con v.
5
0
0
20
40
60
80
100
[°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
Output Current Derating – Base plate
Thermal Resistance – Base plate
[A]
40
[°C/W]
6
3.0 m/s
35
30
2.0 m/s
25
1.5 m/s
20
5
4
3
1.0 m/s
15
2
0.5 m/s
10
5
1
Na t. Con v.
0
0
0
20
40
60
80
0.0
100 [°C]
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section.
1.0
1.5
2.0
2.5
3.0[m/s]
Thermal resistance vs. airspeed measured at the converter. Tested
in wind tunnel with airflow and test conditions as per the Thermal
consideration section. VI = 53 V.
Output Current Derating – Base Plate + Heat sink
[A]
40
0.5
Output Current Derating – Cold wall sealed box
A
40
3.0 m/s
35
35
30
2.0 m/s
25
1.5 m/s
25
1.0 m/s
20
20
15
30
15
0.5 m/s
10
5
Ta mb
85 °C
10
Na t. Con v.
5
0
0
0
20
40
60
80
100 [°C]
0
20
40
60
80
100 [°C]
Available load current vs. base plate temperature at 85ºC ambient.
VI = 53 V. See Thermal Consideration section.
Available load current vs. ambient air temperature and airflow at
VI = 53 V. See Thermal Consideration section. Tested with Plate Fin
Transverse heatsink, height 0.23 In, P0114 Thermal Pad.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 19 of 30
EMC Specification
Conducted EMI measured according to EN55022, CISPR
22 and FCC part 15J (see test set-up). The fundamental
switching frequency is 140 kHz for NQB at VI = 53 V, max
IO.
Conducted EMI Input terminal value (typ)
Test set-up
Layout recommendations
The radiated EMI performance of the product will
depend on the PWB layout and ground layer design.
It is also important to consider the stand-off of
the product. If a ground layer is used, it should
be connected to the output of the product and the
equipment ground or chassis.
A ground layer will increase the stray capacitance
in the PWB and improve the high frequency EMC
performance.
EMI without filter
Optional external filter for class B
Suggested external input filter in order to meet class B in
EN 55022, CISPR 22 and FCC part 15J.
0
C4
L1
C1
L2
C2
+
C3
+
Module
-
-
R
Output ripple and noise
Output ripple and noise measured according to figure
below.
Filter components:
C1 = 1 μF
C2 = 1 μF+220 μF
C3 = 1 μF+220 μF
C4,C5 = 2.2 nF
L1 = 810 μH
L2 = 810 μH
C5
0
Output ripple and noise test setup
Operating information
Power Management Overview
This product includes protection features that
continuously safeguard the load from damage due to
unexpected system faults.
Input Voltage
The NQB consists of two different product families
designed for two different input voltage ranges, 36 to
75 Vdc and 40 to 60 Vdc, see ordering information.
EMI with filter
The input voltage range 36 to 75 Vdc meets the
requirements of the European Telecom Standard ETS
300 132-2 for normal input voltage range in –48 and
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
The input voltage range 40 to 60 Vdc meets the
requirements for normal input voltage range in -48 V
systems, -40.5 to -57.0 V. At input voltages exceeding
60 V, the power loss will be higher than at normal input
voltage and TP1 must be limited to absolute max +125°C.
The absolute maximum continuous input voltage is 65 Vdc.
Turn-off Input Voltage
The product monitors the input voltage and will turn
on and turn off at predetermined levels. The minimum
hysteresis between turn on and turn off input voltage is 2
V.
Remote Control (RC)
The products are fitted with a remote control function.
The remote control is referenced to the primary negative
input connection (-In). The RC function allows the
converter to be turned on/off by an external device like a
semiconductor or mechanical switch. The RC pin has an
internal pull up resistor. The device should be capable of
sinking 0.7 mA. When the RC pin is left open, the voltage
generated on the RC pin is max
6 V. The product is provided with
“negative logic” remote control
and will be off until the RC pin is
connected to the -In. To turn on
the product the voltage between
RC pin and -In should be less
than 1 V. To turn off the product
the RC pin should be left open for
a minimum of time 150 µs, the
same time requirement applies
when the product shall turn on. In
situations where it is desired to have the product to power
up automatically without the need for control signals or a
switch, the RC pin can be wired directly to –In
Input and Output Impedance
The impedance of both the input source and the load will
interact with the impedance of the product. It is important
that the input source has low characteristic impedance.
Minimum recommended external input capacitance is 100
µF. The performance in some applications can be enhanced
by addition of external capacitance as described under
External Decoupling Capacitors.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load
can be improved by addition of decoupling capacitors at
the load. The most effective technique is to locate low ESR
ceramic and electrolytic capacitors as close to the load
as possible, using several parallel capacitors to lower the
effective ESR. The ceramic capacitors will handle highfrequency dynamic load changes while the electrolytic
capacitors are used to handle low frequency dynamic load
changes. Ceramic capacitors will also reduce any high
frequency noise at the load. It is equally important to
use low resistance and low inductance PWB layouts and
cabling. External decoupling capacitors will become part
of the product’s control loop. The control loop is optimized
for a wide range of external capacitance and the maximum
recommended value that could be used without any
additional analysis is found in the electrical specification.
The ESR of the capacitors is a very important parameter.
Stable operation is guaranteed with a verified ESR value
of >10 mΩ across the output connections. For further
information please contact your local CUI Power Modules
representative.
Parallel Operation (Droop Load Share, DLS)
The NQB, DLS products are variants that can be connected
in parallel. The products have a pre-configured voltage
droop: The stated output voltage set point is at no load.
The output voltage will decrease when the load current is
increased. The voltage will droop 0.6 V while load reaches
max load. This feature allows the products to be connected
in parallel and share the current with 10% accuracy. Up
to 90% of max output current can be used from each
product.
Voltage regulation DLS products
12.8
Output Voltage [V]
–60 Vdc systems, -40.5 to -57.0 V and –50.0 to -72 V
respectively.
At input voltages exceeding 75 V, the power loss will
be higher than at normal input voltage and TP1 must be
limited to absolute max +125°C. The absolute maximum
continuous input voltage is 80 Vdc.
date 02/20/2013 │ page 20 of 30
Module 1
12.6
Module 2
Module 1+2
12.4
12.2
12.0
11.8
11.6
0
10
20
30
40
50
60
70
Output Current [A]
Feed Forward Capability
The NQB products have a feed forward function
implemented that can handle sudden input voltage
changes. The output voltage will be regulated during an
input transient and will typically stay within 10% when an
input transient is applied.
Soft-start Power Up
The rise time of the ramp up is 10 ms. When starting by
applying input voltage the control circuit boot-up time
adds an additional 15 ms delay. The DLS variants have a
pre-configured ramp up time of
25 ms.
Temperature Protection (OTP, UTP)
The products are protected from thermal overload by an
internal temperature shutdown protection. When TP1 as
defined in thermal consideration section is exceeded the
product will shut down. The product will make continuous
attempts to start up and resume normal operation
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
automatically when the temperature has dropped below
the temperature threshold; the hysteresis is defined in
general electrical specification. The product has also an
under temperature protection.
Over Voltage Protection (OVP)
The product includes over voltage limiting circuitry for
protection of the load. The OVP limit is 30% above the
nominal output voltage. The response from an over
voltage fault is to immediately shut down. The device will
continuously check for the presence of the fault condition,
and when the fault condition no longer exists the device
will be re-enabled.
Over Current Protection (OCP)
The product includes current limiting circuitry for
protection at continuous overload. The setting for the
product is hic-up mode if the maximum output current is
exceeded and the output voltage is below 0.3×Vout. Above
the trip voltage the product will continue operate while
maintaining the output current at the maximum output
current. The load distribution should be designed for the
maximum output short circuit current specified.
date 02/20/2013 │ page 21 of 30
Thermal Consideration
General
The product is designed to operate in different thermal
environments and sufficient cooling must be provided
to ensure reliable operation. For products mounted on
a PWB without a heat sink attached, cooling is achieved
mainly by conduction, from the pins to the host board,
and convection, which is dependant on the airflow across
the product. Increased airflow enhances the cooling of
the product. The Output Current Derating graph found in
the output section for each model provides the available
output current vs. ambient air temperature and air velocity
at VI =53 V.
The product is tested on a 254 x 254 mm, 35 µm (1 oz),
16-layer test board mounted vertically in a wind tunnel
with a cross-section of 608 x 203 mm.
Droop Load Share variants (DLS) will enter hic-up mode,
with a trip voltage, 0.04×Vout. Above the trip voltage the
product will continue to operate while maintaining the
output current at the maximum output current
Input Over/Under voltage protection
The input of the product is protected from high input
voltage and low input voltage.
Pre-bias Start-up Capability
The product has a Pre-bias start up functionality and will
not sink current during start up if a Pre-bias source is
present at the output terminals. If the Pre-bias voltage
is lower than the target value, the product will ramp up
to the target value. If the Pre-bias voltage is higher than
the target value, the product will ramp down to the target
value and in this case sink current for a limited time.
13.4
13.4
13.2
13.2
13.0
13.0
12.8
12.8
Vout [V]
Vout [V]
Output Voltage Regulation
The NQB products are designed to be fully regulated
within the plotted area. Operating outside this area is not
recommended.
12.6
12.4
12.2
For products with base plate used in a sealed box/cold
wall application, cooling is achieved mainly by conduction
through the cold wall. The Output Current Derating graphs
are found in the output section for each model. The
product is tested in a sealed box test set up with ambient
temperatures 85, 55 and 25°C.
12.6
12.4
12.2
12.0
12.0
35
45
55
65
75
Vin [V]
Vin range: 36-75Vdc
35 40
45 50 55
60 65
Vin [V]
Vin range:40-60Vdc
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
Definition of product operating temperature
The product operating temperature is used to monitor the
temperature of the product, and proper thermal conditions
can be verified by measuring the temperature at positions
P1, P2, P3 and P4. The temperature at these positions (TP1,
TP2, TP3, TP4) should not exceed the maximum temperatures
in the table below. The number of measurement points
may vary with different thermal design and topology.
Temperatures above maximum TP1, measured at the
reference point P1 (TP3 / P3 for base plate versions) are not
allowed and may cause permanent damage.
Max temperature
date 02/20/2013 │ page 22 of 30
Resistance graph found in the Output section for
each model. Note that the thermal resistance can be
significantly reduced if a heat sink is mounted on the top
of the base plate.
Calculate the temperature increase (ΔT).
ΔT = Rth x Pd
3. Max allowed ambient temperature is:
Max TP1 - ΔT.
E.g. NQB-468 at 2m/s:
Position
Description
P1
PWB (reference point, open
TP1=125º C
frame)
1. ((1/0.95) - 1) × 468 W = 24.6 W
P2
Opto-coupler
TP2=105º C
2. 19.5 W × 2.8°C/W = 69.0°C}
P3
PWB (reference point for
base-plate version)
TP3=125º C
P4
Primary MOSFET
TP4=125º C
3. 125 °C - 69.0°C = max ambient temperature is 56°C
The actual temperature will be dependent on several
factors such as the PWB size, number of layers and
direction of airflow.
Connections (Top view)
Top view
Pin
Designation
Function
1
+In
Positive Input
2
RC
Remote Control
3
Case
Case to GND (optional)
4
-In
Negative Input
5
-Out
Negative Output
16
+Out
Positive Output
Bottom view
(Best air flow direction is from positive to negative pins.)
Ambient Temperature Calculation
For products with base plate the maximum allowed
ambient temperature can be calculated by using the
thermal resistance.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of product. E.g. 95 % = 0.95
2. Find the thermal resistance (Rth) in the Thermal
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 23 of 30
Mechanical Information - Hole Mount, Open Frame Version
Top View
Pin Positions According To Recommended Footprint
Table 1.
X1 = Ordering information
PIN SPECIFICATIONS
Pin 1, 2, 4, 5 & 16 Material: Copper alloy
Plating: Min Au 0.1 µm over 1-3 µm Ni.
Pin position 3 is only used for base plate
GND connection which is not available on
this module.
Recommended Footprint - Top View
Recommended keep away area for user components.
The stand-off in combination with insulating material ensures that requirements
as per IEC/EN/UL60950 are met and 2250 V isolation maintained even if open
vias or traces are present under the DC/DC converter.
cui.com
Weight: Typical 48 g
All dimensions: mm [inch]
Tolerances:
x.x ±0.50 [0.02]
x.xx ±0.25 [0.01]
(not applied on footprint or typical values)
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 24 of 30
Mechanical Information - Hole Mount, Base Plate Version
Top View
Pin Positions According To Recommended Footprint
Table 1.
X1 = Ordering information
CASE
Material: Aluminum
For screw attachment apply mounting
torque of max 0.44 Nm [3.9 lbf in]. M3
screws must not protrude more than
2.7mm [0.106] into the base plate.
Recommended Footprint - Top View
PIN SPECIFICATIONS
Pin 1, 2, 3, 4, 5 & 16 Material: Copper alloy
Plating: Min Au 0.1 µm over 1-3 µm Ni.
Pin position 3 is only used for base plate
GND connection.
Weight: Typical 68 g
All dimensions: mm [inch]
Tolerances:
x.x ±0.50 [0.02]
x.xx ±0.25 [0.01]
(not applied on footprint or typical values)
Recommended keep away area for user components.
The stand-off in combination with insulating material ensures that requirements
as per IEC/EN/UL60950 are met and 2250 V isolation maintained even if open
vias or traces are present under the DC/DC converter.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 25 of 30
Mechanical Information - Surface Mount Version
Top View
Pin Positions According To Recommended Footprint
Recommended Footprint - Top View
PIN SPECIFICATIONS
Pin 1, 2, 4, 5 & 16 Material: Copper alloy
Plating: Min Au 0.1 µm over 1-3 µm Ni.
Weight: Typical 46 g
All dimensions: mm [inch]
Tolerances:
x.x ±0.50 [0.02]
x.xx ±0.25 [0.01]
(not applied on footprint or typical values)
Recommended keep away area for user components.
The stand-off in combination with insulating material ensures that requirements
as per IEC/EN/UL60950 are met and 2250 V isolation maintained even if open
vias or traces are present under the DC/DC converter.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 26 of 30
Soldering Information - Surface Mounting
Lead-free (Pb-free) solder processes
The surface mount product is intended for forced
convection or vapor phase reflow soldering in SnPb and
Pb-free processes.
For Pb-free solder processes, a pin temperature (TPIN)
in excess of the solder melting temperature (TL, 217 to
221°C for SnAgCu solder alloys) for more than 60 seconds
and a peak temperature of 245°C on all solder joints is
recommended to ensure a reliable solder joint.
The reflow profile should be optimised to avoid excessive
heating of the product. It is recommended to have
a sufficiently extended preheat time to ensure an
even temperature across the host PWB and it is also
recommended to minimize the time in reflow.
Maximum Product Temperature Requirements
Top of the product PWB near pin 2 is chosen as reference
location for the maximum (peak) allowed product
temperature (TPRODUCT) since this will likely be the warmest
part of the product during the reflow process.
A no-clean flux is recommended to avoid entrapment of
cleaning fluids in cavities inside the product or between
the product and the host board, since cleaning residues
may affect long time reliability and isolation voltage.
SnPb solder processes
For SnPb solder processes, the product is qualified for MSL
1 according to IPC/JEDEC standard J STD 020C.
During reflow TPRODUCT must not exceed 225 °C at any time.
General reflow process specifications SnPb eutectic Pb-free
Average ramp-up (T PRODUCT )
Typical solder melting (liquidus)
temperature
TL
Minimum reflow time above T L
3°C/s max
3°C/s max
183°C
221°C
60 s
60 s
Minimum pin temperature
T PIN
210°C
235°C
Peak product temperature
T PRODUCT
225°C
260°C
Average ramp-down (T PRODUCT )
6°C/s max
6°C/s max
Maximum time 25°C to peak
6 minutes
8 minutes
Pb-free solder processes
For Pb-free solder processes, the product is qualified for
MSL 3 according to IPC/JEDEC standard J-STD-020C.
During reflow TPRODUCT must not exceed 260 °C at any time.
Dry Pack Information
Products intended for Pb-free reflow soldering processes
are delivered in standard moisture barrier bags according
to IPC/JEDEC standard J STD 033 (Handling, packing,
shipping and use of moisture/reflow sensitivity surface
mount devices).
Temperature
TPRODUCT maximum
TPIN minimum
Pin
profile
TL
Time in preheat
/ soak zone
Time 25°C to peak
Time in
reflow
Product
profile
Using products in high temperature Pb-free soldering
processes requires dry pack storage and handling. In
case the products have been stored in an uncontrolled
environment and no longer can be considered dry, the
modules must be baked according to J STD 033.
Time
Thermocoupler Attachment
Minimum Pin Temperature Recommendations
Pin number 5 chosen as reference location for the
minimum pin temperature recommendation since this will
likely be the coolest solder joint during the reflow process.
Top of PWB near pin 2 for measurement of maximum
product temperature, TPRODUCT
SnPb solder processes
For SnPb solder processes, a pin temperature (TPIN) in
excess of the solder melting temperature, (TL, 183°C
for Sn63Pb37) for more than 60 seconds and a peak
temperature of 220°C is recommended to ensure a reliable
solder joint.
For dry packed products only: depending on the type of
solder paste and flux system used on the host board, up to
a recommended maximum temperature of 245°C could be
used, if the products are kept in a controlled environment
(dry pack handling and storage) prior to assembly.
Pin 5 for measurement of minimum pin (solder joint )
temperature, TPIN
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 27 of 30
Soldering Information - Hole Mounting
The hole mounted product is intended for plated through
hole mounting by wave or manual soldering. The pin
temperature is specified to maximum to 270°C for
maximum 10 seconds.
A maximum preheat rate of 4°C/s and maximum preheat
temperature of 150°C is suggested. When soldering by
hand, care should be taken to avoid direct contact between
the hot soldering iron tip and the pins for more than a few
seconds in order to prevent overheating.
A no-clean flux is recommended to avoid entrapment of
cleaning fluids in cavities inside the product or between
the product and the host board. The cleaning residues may
affect long time reliability and isolation voltage.
Delivery Package Information
The products are delivered in antistatic injection molded
trays (Jedec design guide 4.10D standard) and in antistatic
trays.
Tray Specifications – SMD
Material
Antistatic PPE
Surface resistance
Tray thickness
105 < Ohm/square < 1012
The trays can be baked at maximum
125°C for 48 hours
14.50 mm 0.571 [ inch]
Box capacity
20 products (2 full trays/box)
Tray weight
125 g empty, 574 g full tray
Bakability
JEDEC standard tray for 2x5 = 10 products.
All dimensions in mm [inch]
Tolerances: X.x ±0.26 [0.01], X.xx ±0.13 [0.005]
Note: pick up positions refer to center of pocket.
See mechanical drawing for exact location on product.
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
Tray Specifications - TH
Material
PE Foam
Surface
105 < Ohm/square < 1012
resistance
Bakability
The trays are not bakeable
Tray capacity
20 converters/tray
Box capacity
20 products (1 full tray/box)
Product – Open frame
1100 g full tray, 140g empty tray
Weight
Product – Base plate option
1480 g full tray, 140 g empty tray
cui.com
date 02/20/2013 │ page 28 of 30
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 29 of 30
Product Qualification Specification
Characteristics
External visual inspection
IPC-A-610
Change of temperature
(Temperature cycling)
IEC 60068-2-14 Na
Temperature range
Number of cycles
Dwell/transfer time
-40 to 100°C
500
15 min/0-1 min
Cold (in operation)
IEC 60068-2-1 Ad
Temperature T A
Duration
-45°C
72 h
Damp heat
IEC 60068-2-67 Cy
Temperature
Humidity
Duration
85°C
85 % RH
1000 hours
Dry heat
IEC 60068-2-2 Bd
Temperature
Duration
125°C
1000 h
Electrostatic discharge
susceptibility
IEC 61340-3-1, JESD 22-A114
IEC 61340-3-2, JESD 22-A115
Human body model (HBM)
Machine Model (MM)
Class 2, 2000 V
Class 3, 200 V
Immersion in cleaning solvents
IEC 60068-2-45 XA, method 2
Water
Glycol ether
Isopropyl alcohol
55°C
35°C
35°C
Mechanical shock
IEC 60068-2-27 Ea
Peak acceleration
Duration
100 g
6 ms
Moisture reflow sensitivity 1
J-STD-020C
Level 1 (SnPb-eutectic)
Level 3 (Pb Free)
225°C
260°C
MIL-STD-202G, method 108A
Duration
1000 h
IEC 60068-2-20 Tb, method 1A
Solder temperature
Duration
270°C
10-13 s
IEC 60068-2-21 Test Ua1
IEC 60068-2-21 Test Ue1
Through hole mount products
Surface mount products
All leads
All leads
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
150°C dry bake 16 h
215°C
235°C
Preconditioning
Temperature, SnPb Eutectic
Temperature, Pb-free
Steam ageing
235°C
245°C
Frequency
Spectral density
Duration
10 to 500 Hz
0.07 g2/Hz
10 min in each direction
Operational life test
Resistance to soldering heat
2
Robustness of terminations
IEC 60068-2-58 test Td
1
Solderability
IEC 60068-2-20 test Ta 2
Vibration, broad band random
Notes:
IEC 60068-2-64 Fh, method 1
1. Only for products intended for reflow soldering (surface mount products)
2. Only for products intended for wave soldering (plated through hole products)
cui.com
CUI Inc │ SERIES: NQB-N │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS
date 02/20/2013 │ page 30 of 30
REVISION HISTORY
rev.
1.0
description
date
initial release
02/20/2013
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
[email protected]
Novum is a trademark of CUI.
All other trademarks are the property of their respective owners.
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.
Similar pages