DELTA DNM24S0B0R10NFB

FEATURES
Š
Š
High efficiency: 97% @ 24Vin, 12V/6A out
Small size and low profile: (SIP)
50.8 x 12.7 x 9.5mm (2.00” x 0.50” x 0.37”)
Š
Standard footprint
Š
Voltage and resistor-based trim
Š
Pre-bias startup
Š
No minimum load required
Š
Output voltage programmable from
5Vdc to 15Vdc via external resistor
Š
Fixed frequency operation (300KHz)
Š
Input UVLO, output OTP, OCP
Š
Remote ON/OFF
Š
Remote sense
Š
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
Š
UL/cUL 60950-1 (US & Canada), and TUV
(EN60950-1) - pending
Delphi DNM24 series Non-Isolated Point of Load
DC/DC Power Modules: 20-30Vin, 5-15V/10A out
OPTIONS
The Delphi series DNM24S, 20~30V input, single output, non-isolated
Š
Negative On/Off logic
point of load DC/DC converters are the latest offering from a world leader
in power systems technology and manufacturing ― Delta Electronics,
Inc. The DNM24S series provides a programmable output voltage from
5V to 15V through an external trimming resistor. This product family is
available in SIP package and provides 10A of output current in an
industry standard footprint and pinout. With creative design technology
and optimization of component placement, these converters possess
outstanding electrical and thermal performance and extremely high
APPLICATIONS
reliability under highly stressful operating conditions.
Š
Telecom/DataCom
Š
Distributed power architectures
Š
Servers and workstations
Š
LAN/WAN applications
Š
Data processing applications
PRELIMINARY DATASHEET
DS_DNM24SIP10_08142008
TECHNICAL SPECIFICATIONS
TA = 25°C, airflow rate = 300 LFM, Vin = 20Vdc and 30Vdc, nominal Vout unless otherwise noted.
PARAMETER
NOTES and CONDITIONS
DNM24S0B0R10NFB
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Operating Temperature
Storage Temperature
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Transient
Recommended Input Fuse
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Adjustable Range
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Output Current Range
Output Voltage Over-shoot at Start-up
Output Short-Circuit Current (Hiccup mode)
DYNAMIC CHARACTERISTICS
Dynamic Load Response
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time to 10% of Peak Devitation
Dynamic Load Response
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time to 10% of Peak Devitation
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Output Voltage Rise Time
Maximum Output Startup Capacitive Load
EFFICIENCY
Vo=5V
Vo=12V
Vo=15V
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, (Negative logic)
Logic Low Voltage
Logic High Voltage
Logic Low Current
Logic High Current
ON/OFF Control, (Positive Logic)
Logic High Voltage
Logic Low Voltage
Logic High Current
Logic Low Current
Remote Sense Range
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
DS_DNM24SIP10_08142008
Refer to Figure 27 for the measuring point
Typ.
0
-40
-55
20
24
Max.
Units
36
125
125
Vdc
°C
°C
30
V
19
V
V
A
mA
mA
A2S
A
17
Vin=Vin,min to Vin,max, Io=6A,Vo=12V
Vin=24V, Io=Min Load, Vo=12V
Vin=24V, Off Converter
Vin= Vin,min to Vin,max, Io=Io,min to Io,max
Vin=24V, Io=Io,max
Vin=Vin,min to Vin,max
Io=Io,min to Io,max
Ta= -40℃ to 85℃
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Vin=min to max, Io=min to max1µF ceramic, 10µF Tan
Vin=min to max, Io=min to max1µF ceramic, 10µF Tan
Vin=24V, Vo=5V
Vin=24V, Vo=12V
Vin=24V, Vo=15V
Vin=min to max, Io=Io,max
Io,s/c
4.5
70
3
1
15
-2.0
5
+2.0
15
% Vo,set
V
0.4
0.4
1
+3
% Vo,set
% Vo,set
% Vo,set
% Vo,set
160
60
20
mV
mV
A
A
A
% Vo,set
Adc
280
280
50
mVpk
mVpk
µs
130
130
50
mVpk
mVpk
µs
Vo,set
0.5
-3
80
30
0
0
0
10
6
4.5
3
10µF Tan & 1µF ceramic load cap, 5A/µs,Vin=24V
,Vo=12V, Io, max=6A, no external out capacitor
50% Io, max to 100% Io, max
100% Io, max to 50% Io, max
10µF Tan & 1µF ceramic load cap, 5A/µs, Vin=24V
Vo=12V, Io, max=6A, 2×150uF OS-CON capacitor
50% Io, max to 100% Io, max
100% Io, max to 50% Io, max
Io=Io.max
Von/off, Vo=10% of Vo,set
Vin=Vin,min, Vo=10% of Vo,set
Time for Vo to rise from 10% to 90% of Vo,set
Full load; ESR ≧1mΩ
Full load; ESR ≧10mΩ
2
2
2
Vin=24V, Io=Io,max
Vin=24V, Io=Io,max
Vin=24V, Io=Io,max
Module On, Von/off
Module Off, Von/off
Module On, Ion/off
Module Off, Ion/off
-0.3
2.5
Module On, Von/off
Module Off, Von/off
Module On, Ion/off
Module Off, Ion/off
Vin-2.5
-0.3
Io=Io,max, Ta=25℃
Refer to Figure 27 for the measuring point
4
4
5
8
8
9
1000
2000
ms
ms
ms
µF
µF
93.0
97.0
97.0
%
%
%
300
kHz
10
10
TBD
12
125
1.2
Vin,max
30
1
V
V
uA
mA
Vin,max
1.2
30
1
0.5
V
V
uA
mA
V
M hours
grams
°C
2
ELECTRICAL CHARACTERISTICS CURVES
95
100
EFFICIENCY(%)
EFFICIENCY(%)
90
85
20V
80
24V
75
30V
70
95
90
20V
24V
85
30V
80
1
2
3
4
5
6
7
8
9
10
OUTPUT CURRENT (A)
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
OUTPUT CURRENT (A)
Figure 2: Converter efficiency vs. output current
Figure 1: Converter efficiency vs. output current
(12V output voltage)
(5.0V output voltage)
EFFICIENCY(%)
100
95
90
20V
24V
85
30V
80
1
1.5
2
2.5
3
3.5
4
4.5
OUTPUT CURRENT (A)
Figure 3: Converter efficiency vs. output current
(15V output voltage)
DS_DNM24SIP10_08142008
3
ELECTRICAL CHARACTERISTICS CURVES
Figure 4: Output ripple & noise at 24Vin, 5.0V/10A out
Figure 5: Output ripple & noise at 24Vin, 12V/6A out
Vo
Vin
Figure 6: Output ripple & noise at 24Vin, 15V/4.5A out
Vo
Remote On/Off
Figure 8: Turn on delay time at Remote On/Off,12V/6A out
DS_DNM24SIP10_08142008
Figure 7: Turn on delay time at 24vin, 12V/6A out
Vo
Remote On/Off
Figure 9: Turn on Using Remote On/Off with external
capacitors (Co= 2000 µF), 12V/6A out
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 10: Typical transient response to step load change at
5A/μS from 100% to 50% of Io, max at 24Vin,
12.0V out (Cout = 1uF ceramic, 10μF tantalum)
Figure 11: Typical transient response to step load change at
5A/μS from 50% to 100% of Io, max at 24Vin,
12.0V out (Cout = 1uF ceramic, 10μF tantalum)
Figure 12: Typical transient response to step load change at
5A/μS from 100% to 50% of Io, max at 24Vin,
12.0Vout (Cout = 1uF ceramic, 10μF tantalum)
with external 2*150uF OS-CON capacitors
Figure 13: Typical transient response to step load change at
5A/μS from 50% to 100% of Io, max at 24Vin,
12.0Vout (Cout = 1uF ceramic, 10μF tantalum)
with external 2*150uF OS-CON capacitors
Figure 14: Output short circuit current 24Vin, 5.0Vout
(20A/div)
Figure 15: Turn on with Prebias 24Vin, 12V/0A out, Vbias
=10.2Vdc
DS_DNM24SIP10_08142008
5
TEST CONFIGURATIONS
DESIGN CONSIDERATIONS
Input Source Impedance
TO OSCILLOSCOPE
L
VI(+)
2 47uF
OS_CON
BATTERY
VI(-)
Note: Input reflected-ripple current is measured with a
simulated source inductance. Current is
measured at the input of the module.
To maintain low-noise and ripple at the input voltage, it
Is critical to use low ESR capacitors at the input to the
module. Figure 19 shows the input ripple voltage
(mVp-p) for various output models using 2x47 uF low
ESR OS-CON capacitors (SANYO P/N:35SVPD47M,
47uF/35V or equivalent).
The input capacitance should be able to handle an AC
Ripple current of at least:
Irms = Iout
Vout ⎛
Vout ⎞
⎜1 −
⎟
Vin ⎝
Vin ⎠
Arms
Figure 16: Input reflected-ripple test setup
COPPER STRIP
Vo
1uF
10uF
SCOPE
tantalum ceramic
Resistive
Load
GND
Input Ripple Voltage (mVp-p)
500
400
300
200
100
0
0
3
6
9
12
15
Output Voltage (Vdc)
Note: Use a 10μF tantalum and 1μF capacitor. Scope
measurement should be made using a BNC
connector.
Figure 17: Peak-peak output noise and startup transient
measurement test setup
Figure 19: Input ripple voltage for various Output models,
Vo=5V Io = 10A、Vo=12V Io = 6A and Vo=15V Io =
4.5A (Cin = 2x47uF OS-CON capacitors at the
input)
CONTACT AND
DISTRIBUTION LOSSES
VI
Vo
Io
I
LOAD
SUPPLY
GND
CONTACT RESISTANCE
Figure 18: Output voltage and efficiency measurement test
setup
Note: All measurements are taken at the module
terminals. When the module is not soldered (via socket),
place Kelvin connections at module terminals to avoid
measurement errors due to contact resistance.
η =(
Vo × Io
) × 100 %
Vi × Ii
DS_DNM24SIP10_08142008
6
DESIGN CONSIDERATIONS (CON.)
FEATURES DESCRIPTIONS
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the module. An
input capacitance must be placed close to the modules
input pins to filter ripple current and ensure module
stability in the presence of inductive traces that supply
the input voltage to the module.
Remote On/Off
Safety Considerations
For safety-agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power module
has extra-low voltage (ELV) outputs when all inputs are
ELV.
The input to these units is to be provided with a
maximum 15A of glass type fast-acting fuse in the
ungrounded lead.
The DNM series power modules have an On/Off pin for
remote On/Off operation. Both positive and negative
On/Off logic options are available in the DNM series
power modules.
For positive logic module, connect an open collector
(NPN) transistor or open drain (N channel) MOSFET
between the On/Off pin and the GND pin (see figure 20).
Positive logic On/Off signal turns the module ON during
the logic high and turns the module OFF during the logic
low. When the positive On/Off function is not used, leave
the pin floating or tie to Vin (module will be On).
For negative logic module, the On/Off pin is pulled high
with an external pull-up resistor (see figure 21) Negative
logic On/Off signal turns the module OFF during logic
high and turns the module ON during logic low. If the
negative On/Off function is not used, leave the pin
floating or tie to GND. (module will be On)
Vo
Vin
ION/OFF
RL
On/Off
GND
Figure 20: Positive remote On/Off implementation
Vo
Vin
Rpull-up
ION/OFF
On/Off
RL
GND
Figure 21: Negative remote On/Off implementation
Over-Current Protection
To provide protection in an output over load fault
condition, the unit is equipped with internal over-current
protection. When the over-current protection is
triggered, the unit enters hiccup mode. The units
operate normally once the fault condition is removed.
DS_DNM24SIP10_08142008
7
FEATURES DESCRIPTIONS (CON.)
Over-Temperature Protection
The over-temperature protection consists of circuitry that
provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold the
module will shut down. The module will try to restart after
shutdown. If the over-temperature condition still exists
during restart, the module will shut down again. This
restart trial will continue until the temperature is within
specification
Remote Sense
The DNM provide Vo remote sensing to achieve proper
regulation at the load points and reduce effects of
distribution losses on output line. In the event of an open
remote sense line, the module shall maintain local sense
regulation through an internal resistor. The module shall
correct for a total of 0.1V of loss. The remote sense line
impedance shall be < 10Ω.
Distribution Losses
For example, to program the output voltage of the DNM
module to12Vdc, Rtrim is calculated as follows:
⎛ 10500
⎞
Rtrim = ⎜
− 1000 ⎟ ⋅ Ω
⎠
⎝ 6.979
Rtrim = 504.514Ω
DNM can also be programmed by applying a voltage
between the TRIM and GND pins (Figure 24). The
following equation can be used to determine the value of
Vtrim needed for a desired output voltage Vo:
Vtrim = 0.7 − [(Vo − 5.021) ⋅ 0.0667]
Vtrim is the external voltage in V
Vo is the desired output voltage
For example, to program the output voltage of a DNM
module to 12 Vdc, Vtrim is calculated as follows
Distribution Losses
Vin
Vo
Vtrim = 0.7 − (6.979 ⋅ 0.0667 )
Sense
RL
Vtrim = 0.2345V
GND
Distribution Losses
Distribution Losses
Figure 22: Effective circuit configuration for remote sense
operation
Output Voltage Programming
The output voltage of the DNM can be programmed to
any voltage between 5.021Vdc and 15.0Vdc by
connecting one resistor (shown as Rtrim in Figure 23)
between the TRIM and GND pins of the module. Without
this external resistor, the output voltage of the module is
5.021 Vdc. To calculate the value of the resistor Rtrim for
a particular output voltage Vo, please use the following
equation:
Figure 23: Circuit configuration for programming output voltage
using an external resistor
⎛ 10500
⎞
Rtrim = ⎜
− 1000 ⎟ ⋅ Ω
⎝ Vo − 5.021
⎠
Rtrim is the external resistor in Ω
Vo is the desired output voltage
DS_DNM24SIP10_08142008
Figure 24: Circuit Configuration for programming output voltage
using external voltage source
8
FEATURE DESCRIPTIONS (CON.)
Table 1 provides Rtrim values required for some common
output voltages, while Table 2 provides value of external
voltage source, Vtrim, for the same common output
voltages. By using a ±0.5% tolerance trim resistor, set
point tolerance of ±2% can be achieved as specified in the
electrical specification.
Table 1
VO (V)
5.021
12
15
Rtrim (Ω)
Open
504.514
52.21
Table 2
VO (V)
5.021
12
15
Vtrim (V)
Open
0.2345
0.0344
The amount of power delivered by the module is the
voltage at the output terminals multiplied by the output
current. When using the trim feature, the output voltage
of the module can be increased, which at the same
output current would increase the power output of the
module. Care should be taken to ensure that the
maximum output power of the module must not exceed
the maximum rated power (Vo.set x Io.max ≤ P max).
Voltage Margining
Output voltage margining can be implemented in the
DNM modules by connecting a resistor, R margin-up, from
the Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, Rmargin-down, from the
Trim pin to the output pin for margining-down. Figure 25
shows the circuit configuration for output voltage
margining. If unused, leave the trim pin unconnected. A
calculation tool is available from the evaluation procedure
which computes the values of R margin-up and Rmargin-down for
a specific output voltage and margin percentage.
Vin
Vo
Rmargin-down
Q1
On/Off
Trim
Rmargin-up
Rtrim
Q2
GND
Figure 25: Circuit configuration for output voltage margining
DS_DNM24SIP10_08142008
9
THERMAL CONSIDERATIONS
Thermal De-rating
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power module
should always be operated below the maximum operating
temperature. If the temperature exceeds the maximum
module temperature, reliability of the unit may be
affected.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind tunnel.
PWB
FACING PWB
MODULE
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in heated
vertical wind tunnels that simulate the thermal
environments encountered in most electronics equipment.
This type of equipment commonly uses vertically mounted
circuit cards in cabinet racks in which the power modules
are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted on a
test PWB and is vertically positioned within the wind
tunnel. The height of this fan duct is constantly kept at
25.4mm (1’’).
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
50.8 (2.0”)
AIR FLOW
12.7 (0.5”)
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 26: Wind tunnel test setup
DS_DNM24SIP10_08142008
10
THERMAL CURVES
DNM24S0B0R10NF B Output Current vs. Ambient Temperature and Air Velocity
@ Vin =24V, Vout =15V (worse condition)
Output Current (A)
5
5
4
4
3
3
2
Natural
Convection
2
1
1
0
25
Figure 27: Temperature measurement location
The allowed maximum hot spot temperature is defined at 125℃
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 30: Output current vs. ambient temperature and air
[email protected] Vin=24V, Vo=15V(Either Orientation)
DNM24S0B0R10NF B Output Current vs. Ambient Temperature and Air Velocity
@ Vin =24V, Vout =5V (worse condition)
Output Current (A)
12
10
8
6
Natural
Convection
4
100LFM
200LFM
2
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 28: Output current vs. ambient temperature and air
[email protected] Vin=24V, Vo=5.0V(Either Orientation)
DNM24S0B0R10NF B Output Current vs. Ambient Temperature and Air Velocity
@ Vin =24V, Vout =12V (worse condition)
Output Current (A)
7
6
5
4
Natural
Convection
3
2
1
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 29: Output current vs. ambient temperature and air
[email protected] Vin=24V, Vo=12V(Either Orientation)
DS_DNM24SIP10_08142008
11
MECHANICAL DRAWING
SIP PACKAGE
DS_DNM24SIP10_08142008
12
PART NUMBERING SYSTEM
DNM
24
S
0B0
R
Product
Series
Input
Voltage
Numbers
of Outputs
Output
Voltage
Package
Type
Output
On/Off logic
Current
24 - 20~30V
S - Single
R - SIP
10 -10A
DNM ~ 10A
0B0 -
10
Programmable
N
F
B
Option Code
N- negative
F- RoHS 6/6
P- positive
(Lead Free)
B - No tracking pin
MODEL LIST
Model Name
DNM24S0B0R10NFB
Packaging Input Voltage
SIP
20V ~ 30V
Output Voltage Output Current On/Off logic
5.0V ~ 15.0V
4.5A~10A
Negative
Efficiency
24Vin @ 100% load
97% (12V/6A)
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: [email protected]
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220
Fax: +886 3 4513485
Email: [email protected]
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon
request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for
its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these
specifications at any time, without notice.
DS_DNM24SIP10_08142008
13