30A/360W

Technical
Specification
BQ60120HEx30
35-75V
12V
30A
360W
2250V dc
Half-brick
Input
Output
Current
Power
Isolation
DC-DC Converter
®
The BusQor® BQ60120HEx30 Exa series converter is a
next-generation, board-mountable, isolated, wide input,
regulated, fixed switching frequency DC-DC converter that
uses synchronous rectification to achieve extremely high
conversion efficiency. The BusQor Exa series provides an
isolated step down voltage from 35-75V to 12V with tight
output voltage regulation in a standard “half-brick” module
and is available in open-frame and baseplated version.
BusQor converters are ideal for customers who need
multiple outputs and wish to use point of load converters
to work with a 12V rail. The BusQor Exa series converters
offer industry-leading useable output current for powering
intermediate bus architechture systems. RoHS 6/6 compliant
(see page last page).
BQ60120HEx30 Model
Operational Features
Mechanical Features
• Ultra-high efficiency, 95% at full rated load current
• Delivers 30A of current at (360W) full power with minimal derating
- no heatsink required
• Wide operating input voltage range: 35-75V with 100V 100ms
input voltage transient withstand capability
• Fixed frequency switching provides predictable EMI
Control Features
• On/Off control referenced to input side (positive and negative logic
options are available)
• Remote sense for the output voltage compensates for output
distribution drops
• Output voltage trim down to 6.0V permits custom voltages and
voltage margining (+5%/-50%)
• Short startup inhibit time
Safety Features
• UL 60950-1/R2011-12
• EN60950-1/A2:2013
• CAN/CSA-C22.2 No. 60950-1/A1:2011
Product # BQ60120HEx30
Phone 1-888-567-9596
• Industry standard half-brick pin-out configuration
• Size: 2.4” x 2.3” (61.0x58.4mm), height: 0.422” (10.72mm)
• Total open frame weight: 2.6 oz (75g)
Protection Features
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Output over-voltage protection
Thermal shutdown
Backdrive protection prevents excessive negative current flow
Contents
Page No.
Open Frame Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Baseplated Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Compliance & Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Technical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Applications Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 1
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Open Frame Mechanical Diagram
2.40 [61 ]
.422 ±.030
[10.72±0.76]
OVERALL HEIGHT
1.400 [35.56]
1.000 [25.4]
.700 [17.78]
8
7
6
EACH EXPOSED COPPER STAPLE
CONNECTED TO ADJACENT PIN 5 AND 9
SEE NOTE 7
.010 ±0.09
[0.25±0.22]
BOTTOMSIDE
CLEARANCE
.400 [10.16]
9
BOTTOM VIEW
5
1
2.30
[58.4]
2
4
1.90
[48.3]
.31
[7.8]
.19
[4.8]
1
2
.11
[2.7]
4
.50 [12.7]
.180 [4.57]
SEE NOTE 6
.400[10.16]
7
6
5
.85 [21.7]
1.55 [39.3]
SIDE VIEW
1.90 [48.2]
NOTES
PIN DESIGNATIONS
1) Pins 1, 2 4, 6-8 are 0.040" (1.02mm) diameter with
0.080" (2.03mm) diameter standoff shoulders
2) Pins 5 and 9 are 0.080" (2.03mm) diameter shoulderless pin.
3) Other pin extension lengths available
4) All pins: Material: Copper Alloy
Finish: Matte Tin over Nickel plate
5) Undimensioned components are shown for visual reference only
6) Weight: 2.6 oz (75g) typical
7) All dimensions in inches (mm)
Tolerances: x.xx in +/-0.02 (x.x mm +/-0.5mm)
x.xxx in +/-0.010 (x.xx mm +/-0.25mm)
8) Same net planes recommended on customer board in designated
areas adjacent to Pin 5 and 9, as worst case bottom side clearance
could cause exposed copper staple to touch customer board surface.
9) Workmanship: Meets or exceeds IPC-A-610C Class II
Product # BQ60120HEx30
8
.50 [12.7]
1.400 [5.56]
TOP VIEW
9
Phone 1-888-567-9596
Pin
Name
Function
1
Vin(+)
2
ON/OFF
Positive input voltage
TTL input to turn converter on and off,
referenced to Vin(-), with internal pull up.
Negative input
Negative output
Return remote sense
Output voltage trim
Positive remote sense
Positive output
4 Vin(–)
5 Vout(–)
6 Sense(–)
Trim
7
8 Sense(+)
9 Vout(+)
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 2
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Baseplated Mechanical Diagram
2.40 [61 ]
2.00 [50.8]
1.400 [35.56]
1.000 [25.4]
.700 [17.78]
.400 [10.16]
.506 ±.030
[12.85±0.76]
OVERALL HEIGHT
.20 [5.1]
9
2.30
[58.4]
1.90
[48.3]
8
7
6
5
2
1
4
M3 THREADED INSERT
4 PLACES
SEE NOTE 1
1.90
[48.3]
.31
[7.8]
.19
[4.8]
1
2
9
4
.50 [12.7]
.400[10.16]
1.00 [25.4]
1.400 [35.56]
8
7
6
.50 [12.7]
.180 [4.57]
SEE NOTE 6
SIDE VIEW
TOP VIEW
BOTTOM VIEW
NOTES
.11
[2.7]
5
.85 [21.7]
1.55 [39.3]
1.90 [48.2]
PIN DESIGNATIONS
1) M3 screws used to bolt the unit's baseplate to other surfaces such
as heatsinks must not exceed 0.100" (2.54mm) depth below the
surface of the baseplate.
2) Applied torque per screw should not exceed 6in-lb (0.7Nm).
3) Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface
4) Pins 1, 2 4, 6-8 are 0.040" (1.02mm) diameter with
0.080" (2.03mm) diameter standoff shoulders
5) Pins 5 and 9 are 0.080" (2.03mm) diameter shoulderless pin.
6) Other pin extension lengths available
7) All pins: Material: Copper Alloy
Finish: Matte Tin over Nickel plate
8) Undimensioned components are shown for visual reference only
9) Weight: 3.8 oz (108g) typical
10) All dimensions in inches (mm)
Tolerances: x.xx in +/-0.02 (x.x mm +/-0.5mm)
x.xxx in +/-0.010 (x.xx mm +/-0.25mm)
11) Same net planes recommended on customer board in designated
areas adjacent to Pin 5 and 9, as worst case bottom side clearance
could cause exposed copper staple to touch customer board surface.
12) Workmanship: Meets or exceeds IPC-A-610C Class II
Product # BQ60120HEx30
EACH EXPOSED COPPER STAPLE
CONNECTED TO ADJACENT PIN 5 AND 9
SEE NOTE 11
.010 ±0.09
[0.25±0.22]
BOTTOMSIDE
CLEARANCE
Phone 1-888-567-9596
Pin
Name
Function
1
Vin(+)
2
ON/OFF
Positive input voltage
TTL input to turn converter on and off,
referenced to Vin(-), with internal pull up.
Negative input
Negative output
Return remote sense
Output voltage trim
Positive remote sense
Positive output
4 Vin(–)
5 Vout(–)
6 Sense(–)
Trim
7
8 Sense(+)
9 Vout(+)
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 3
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Specification
BQ60120HEx30 Electrical Characteristics
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage (Input to Output)
Operating Temperature
Storage Temperature
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Maximum Input Current
No-Load Input Current
Disabled Input Current
Input Reflected-Ripple Current
Input Terminal-Ripple Current
Recommended Input Fuse (see Note 1)
Input Filter Component Values (C\L\C)
Output Filter Component Values (Lout\Cout)
Recommended External Input Capacitance
Recommended External Input Capacitor ESR
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
Start-up Output Voltage Overshoot (with max. cap.)
Recommended External Output Capacitance
EFFICIENCY
100% Load
50% Load
Product # BQ60120HEx30
Typ.
-1
-40
-45
Max.
Units Notes & Conditions
100
80
100
2250
100
125
V
V
V
°C
°C
35
48
75
V
31.5
29.5
33.5
30.5
3.0
34.4
32.4
V
V
V
A
mA
mA
mA
mA
A
μF\μH\μF
nH\μF
µF
140
30
20
130
11.6
180
65
40
20
100
0.04
0\1.0\5.0
100\90
100
0.2
1.5
Ω
11.88
12.00
12.12
V
±0.05\6
±0.1\12
±45
±0.1\12
±0.2\24
±90
12.33
%\mV
%\mV
mV
V
120
40
30
40
3.2
0.6
>10,000
mV
mV
A
11.75
60
20
0
34
0.8
Phone 1-888-567-9596
37
1.8
0.3
0
44
95
95
www.synqor.com
A
A
A
µF
%
µF
Continuous
Continuous
100% Load, 35 Vin, trimmed up 5%
RMS thruough inductor; Figures 15 & 17
RMS; Figures 15 & 16
Fast blow external fuse recommended
Internal values; see Figure D
Internal values; see Figure D
Typical ESR 0.1-0.2 Ω
100kHz, -40°C to 100°C; see note 1
Over sample, line, load, temperature & life
44μF local ceramic, Figures 15 & 18
Full Load; Figures 15 & 18
Full Load; Figures 15 & 18
Subject to thermal derating; Figures 7 - 10
Output Voltage 10% Low; Figure 19
Negative current drawn from output
Negative current drawn from output
12Vout at 30A resistive load
10,000μF, Iout=30A resistive load
Local ceramic
%
%
Doc.# 005-2BH612M Rev. F
10/01/15
Page 4
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Specification
BQ60120HEx30 Electrical Characteristics (continued)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
FEATURE CHARACTERISTICS
Switching Frequency Regulation Stage
Switching Frequency Isolation Stage
ON/OFF Control (Option P)
Off-State Voltage
On-State Voltage
ON/OFF Control (Option N)
Off-State Voltage
On-State Voltage
Min.
Typ.
Max.
270
135
300
150
330
165
kHz
kHz
-2
3.5
0.8
18
V
V
2.7
-2
18
0.8
V
V
6
V
kΩ
%
%
%
°C
ON/OFF Control (Either Option)
Pull-Up Voltage
4.5
Pull-Up Resistance
Output Voltage Trim Range
-50
Output Over-Voltage Protection
113
Over-Temperature Shutdown OTP Trip Point
Over-Temperature Shutdown Restart Hysteresis
Load Current Scale Factor
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
For a Step Change in Output Current (5A/μs)
Settling Time
Turn-On Transient
Turn-On Time
8
Start-Up Inhibit Time
2
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
Maximum Baseplate Temperature Limit
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
Isolation Capacitance
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
Calculated MTBF (MIL-217) MIL-HDBK-217F
Field Demonstrated MTBF
Units Notes & Conditions
Synchronous to regulation stage
Figure A
5
10
118
120
10
600
+5
123
Measured across Pins 9 & 5; Figure B
Over full temp range; % of nominal Vout
Average PCB Temperature
See App Note: Output Load Current Calc.
80
dB
120 Hz; Figure 22
300
500
100
mV
mV
µs
50% to 75% to 50% Iout max; Figure 13
50% to 75% to 50% Iout max; Figure 14
To within 1% Vout nom
20
4
ms
ms
Half load, Vout=90% nom.
-40 °C to +125 °C
125
125
125
100
°C
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 7 - 10 for derating curves
Applies to BQ60120HEB30 only
14
3
2250
30
1000
1.9
1.4
V
MΩ
pF
106 Hrs. 80% load, 300LFM, 40 °C Ta
106 Hrs. 80% load, 300LFM, 40 °C Ta
106 Hrs. See our website for details
Note 1: Electrolytic capacitor ESR tends to increase dramatically at low temperature.
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 5
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Specification
Compliance & Testing
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1/R2011-12
Basic insulation
EN60950-1/A2:2013
CAN/CSA-C22.2 No. 60950-1/A1:2011
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new
releases or download from the SynQor website.
Parameter
QUALIFICATION TESTING
Life Test
Vibration
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
Solderability
Product # BQ60120HEx30
# Units
32
5
5
10
5
5
5
15 pins
Phone 1-888-567-9596
Test Conditions
95% rated Vin and load, units at derating point, 1000 hours
10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis
100g minimum, 2 drops in x, y and z axis
-40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles
Toperating = min to max, Vin = min to max, full load, 100 cycles
Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load
85 °C, 95% RH, 1000 hours, continuous Vin applied except 5 min/day
MIL-STD-883, method 2003
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 6
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Figures
100
22
20
18
Power Dissipation (W)
Efficiency (%)
95
90
85
80
35 Vin
75
16
14
12
10
8
6
35 Vin
4
48 Vin
48 Vin
2
75 Vin
75 Vin
0
70
0
3
6
9
12
15
18
21
24
27
0
30
3
6
9
Load Current (A)
12
15
18
21
24
27
30
Load Current (A)
Figure 1: Efficiency at nominal 12V output vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
Figure 2: Power dissipation at nominql 12V output vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
100
22
20
18
Power Dissipation (W)
Efficiency (%)
95
90
85
80
35 Vin
75
70
6
9
12
15
18
21
24
27
12
10
8
6
35 Vin
48 Vin
2
75 Vin
3
14
4
48 Vin
0
16
75 Vin
0
30
0
3
6
9
12
15
18
21
24
27
30
Load Current (A)
Load Current (A)
Figure 3: Efficiency at trimmed-down 9.0V output vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
Figure 4: Power dissipation at trimmed-down 9.0V output vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
22
100
20
18
Power Dissipation (W)
Efficiency (%)
95
90
85
80
35 Vin
75
16
14
12
10
8
6
48 Vin
4
75 Vin
2
35 Vin
48 Vin
75 Vin
0
70
0
3
6
9
12
15
18
21
24
27
0
30
Load Current (A)
Phone 1-888-567-9596
6
Semiconductor
junction
is
9
12
15
18 temperature
21
24
within 1°C of surface temperature
27
30
Load Current (A)
Figure 5: Efficiency at trimmed-down 6.0V output vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
Product # BQ60120HEx30
3
Figure 6: Power dissipation at trimmed-down 6.0V output vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 7
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Figures
30
25
Iout (A)
20
15
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
100 LFM (0.5 m/s)
0
0
25
40
55
70
Ambient Air Temperature (ºC)
85
Figure 7: Max output power derating curves vs. ambient air temperature for
airflow rates of 100 LFM through 400 LFM with air flowing across the converter
from input to output (nominal input voltage).
Figure 8: Thermal plot of converter at 25 amp load current (300W) with 55°C
air flowing at the rate of 200 LFM. Air is flowing across the converter from input
to output (nominal input voltage).
30
25
Iout (A)
20
15
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
100 LFM (0.5 m/s)
0
0
25
40
55
Ambient Air Temperature (ºC)
70
85
Figure 9: Max output power derating curves vs. ambient air temperature for
airflow rates of 100 LFM through 400 LFM with air flowing from pin 1 to pin 4
(nominal input voltage).
Figure 10: Thermal plot of converter at 24.5 amp load current (294W) with 55°C
air flowing at the rate of 200 LFM. Air is flowing across the converter from pin 1
to pin 4 (nominal input voltage).
Figure 11: Turn-on transient at full load (resistive load) (10 ms/div). Input
voltage pre-applied. Top Trace: Vout (5V/div). Bottom Trace: ON/OFF input (5V/
div)
Figure 12: Turn-on transient at zero load (10 ms/div). Top Trace: Vout (5V/div).
Bottom Trace: ON/OFF input (5V/div).
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 8
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Figures
Figure 13: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1A/μ s). Load cap: 47 μF ceramic cap. Top trace:
Vout (500mV/div), Bottom trace: Iout (10A/div).
Figure 14:Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/μ s). Load cap: 470 μF, 15 mΩ ESR tantalum cap
and 47 μF ceramic cap. Top trace: Vout (500mV/div), Bottom trace: Iout (10A/
div).
Figure 15:Test set-up diagram showing measurement points for Input Terminal
Ripple Current (Fig 16), Input Reflected Ripple Current (Fig 17) and Output
Voltage Ripple (Fig 18).
Figure 16: Input terminal ripple current, ic, at full rated output current and
nominal input voltage with 4.7 μH source impedance and 100 μF electrolytic
capacitor (100 mA/div). (Fig 15)
Figure 17: Input reflected ripple current, is, through a 4.7 μH source inductor at
nominal input voltage and rated load current (10mA/div). (Fig 15)
Figure 18: Output voltage ripple at nominal input voltage and rated load current
(20mV/div). Load capacitance: 2x22 μF ceramic capacitor. Bandwidth: 500
MHz. (Fig 15)
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 9
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Technical Figures
16
OVP Shutdown
Output Voltage (V)
14
12
10
8
6
4
35 - 75 Vin
2
0
-5
0
5
10
15
20
25
30
35
40
45
Load Current (A)
Figure 19: Output voltage vs. load current showing typical current limit curves
and OVP shutdown point.
Figure 20: Load current (10A/div) as a function of time when the converter
attempts to turn on into a 1mΩ short circuit.
0
1
-10
-20
Forward Transmission (dB)
Output Impedance (Ω)
0.1
0.01
35 Vin
0.001
48 Vin
-30
-40
-50
-60
-70
-80
35 Vin
48 Vin
-90
75 Vin
75 Vin
-100
-110
0.0001
100
1,000
Hz
10,000
100
100,000
Figure 21: Magnitude of incremental output impedance (Zout = vout/iout) for
minimum, nominal, and maximum input voltage at full rated power.
1,000
Hz
10,000
100,000
Figure 22: Magnitude of incremental forward transmission (FT = vout/vin) for
minimum, nominal, and maximum input voltage at full rated power.
100
20
10
0
Input Impedance (Ω)
Reverse Transmission (dB)
10
-10
-20
35 Vin
0.1
35 Vin
-30
1
48 Vin
48 Vin
75 Vin
75 Vin
0.01
100
-40
100
1,000
Hz
10,000
100,000
Figure 23: Magnitude of incremental reverse transmission (RT = iin/iout) for
minimum, nominal, and maximum input voltage at full rated power.
Product # BQ60120HEx30
Phone 1-888-567-9596
1,000
Hz
10,000
100,000
Figure 24: Magnitude of incremental input impedance (Zin = vin/iin) for
minimum, nominal, and maximum input voltage at full rated power.
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 10
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Applications Section
BASIC OPERATION AND FEATURES
CONTROL FEATURES
This converter series uses a two-stage power conversion topology.
The first stage keeps the output voltage constant over variations in
line, load, and temperature. The second stage uses a transformer
to provide the functions of input/output isolation and voltage stepdown to achieve the low output voltage required.
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits
the user to control when the converter is on or off. This input is
referenced to the return terminal of the input bus, Vin(-).
Both the first stage and the second stage switch at a fixed frequency
for predictable EMI performance. Rectification of the transformer’s
output is accomplished with synchronous rectifiers. These devices,
which are MOSFETs with a very low on-state resistance, dissipate
significantly less energy than Schottky diodes, enabling the
converter to achieve high efficiency.
Dissipation throughout the converter is so low that it does not
require a heatsink for operation in many applications; however,
adding a heatsink provides improved thermal derating performance
in extreme situations. See Ordering Information page for available
thermal design options.
SynQor converters use the industry standard footprint and pinout.
ON/OFF
ON/OFF
ON/OFF
In negative logic versions, the ON/OFF signal is active low
(meaning that a low voltage turns the converter on). In positive
logic versions, the ON/OFF input is active high (meaning that a
high voltage turns the converter on). Figure A details possible
circuits for driving the ON/OFF pin. See Ordering Information page
for available enable logics.
REMOTE SENSE Pins 8(+) and 6(-): The SENSE(+) and
SENSE(-) inputs correct for voltage drops along the conductors
that connect the converter’s output pins to the load.
Pin 8 should be connected to Vout(+) and Pin 6 should be
connected to Vout(-) at the point on the board where regulation
is desired. If these connections are not made, the converter will
deliver an output voltage that is slightly higher than its specified
value.
OUTPUT VOLTAGE TRIM (Pin 7): The TRIM input permits
the user to adjust the output voltage across the sense leads up
or down according to the trim range specifications. SynQor uses
industry standard trim equations.
To decrease the output voltage, the user should connect a resistor
between Pin 7 and Pin 6 (SENSE(-) input). For a desired decrease
of the nominal output voltage, the value of the resistor should be:
Rtrim-down =
(
100%
Δ%
)–2
Δ% =
|
Vnominal – Vdesired
Vnominal
kΩ
where
Vin(_)
Vin(_)
Remote Enable Circuit
Negative Logic
(Permanently
Enabled)
5V
ON/OFF
Vin(_)
Positive Logic
(Permanently
Enabled)
TTL/
CMOS
To increase the output voltage, the user should connect a resistor
between Pin 7 and Pin 8 (SENSE(+) input). For a desired increase
of the nominal output voltage, the value of the resistor should be:
ON/OFF
Rtrim-up =
(
)
Vnominal
– 2 × Vdesired + Vnominal
kΩ
1.225
Vdesired – Vnominal
Vin(_)
Vin(_)
Open Collector Enable Circuit
| × 100%
Direct Logic Drive
Figure A: Various Circuits for Driving the ON/OFF Pin.
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 11
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Applications Section
0
5
10
15
20
25
30
35
40
45
50
10,000.0
Trim Resistance (kOhms)
1,000.0
100.0
10.0
1.0
Input Under-Voltage Lockout: The converter is designed to
turn off when the input voltage is too low, helping to avoid an input
system instability problem, which is described in more detail in the
application note titled “Input System Instability” on www.SynQor.
com. The lockout circuitry is a comparator with DC hysteresis.
When the input voltage is rising, it must exceed the typical “TurnOn Voltage Threshold”* before the converter will turn on. Once
the converter is on, the input voltage must fall below the typical
“Turn-Off Voltage Threshold”* before the converter will turn off.
Output Current Limit: If the output current exceeds the “Output
DC Current Limit Inception” point*, then a fast linear current limit
controller will reduce the output voltage to maintain a constant
output current. There is no minimum operating output voltage.
The converter will run with low on-board power dissipation down
to zero output voltage. A redundant circuit will shutdown the
converter if the primary current limit fails.
0.1
0.0
% Increase in Vout
Protection Features
% Decrease in Vout
Figure B: Trim Graph.
The Trim Graph in Figure B shows the relationship between the
trim resistor value and Rtrim-up and Rtrim-down, showing the
total range the output voltage can be trimmed up or down.
Note: The TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
output voltage too high may cause the over-voltage protection
circuit to engage, particularly during transients.
It is not necessary for the user to add capacitance at the TRIM pin.
The node is internally filtered to eliminate noise.
Total DC Variation of Vout: For the converter to meet its full
specifications, the maximum variation of the DC value of Vout, due
to both trimming and remote load voltage drops, should not be
greater than that specified for the output voltage trim range.
Back-Drive Current Limit: If there is negative output current
of a magnitude larger than the "Back-Drive Current Limit while
Enabled" specification*, then a fast back-drive limit controller will
increase the output voltage to maintain a constant output current.
If this results in the output voltage exceeding the "Output OverVoltage Protection" threshold*, then the unit will shut down. The
full I-V output characteristics can be seen in Figure 19.
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the “Output Over-Voltage Protection” threshold*, the
converter will immediately stop switching. This prevents damage
to the load circuit due to 1) excessive series resistance in output
current path from converter output pins to sense point, 2) a
release of a short-circuit condition, or 3) a release of a current
limit condition. Load capacitance determines exactly how high the
output voltage will rise in response to these conditions.
Over-Temperature Shutdown: A temperature sensor on the
converter senses the average temperature of the module. The
thermal shutdown circuit is designed to turn the converter off
when the temperature at the sensed location reaches the OverTemperature Shutdown value. It will allow the converter to turn
on again when the temperature of the sensed location falls by
the amount of the Over-Temperature Shutdown Restart Hysteresis
value.
Startup Inhibit Period: If any protection feature causes the
converter to shut down, the converter will attempt to restart after
2ms (typical), the "Startup Inhibit Period".* On initial application
of input voltage, with the ON/OFF pin set to enable the converter,
the "Turn-On Time"* will increase by only 2ms.
*See specifications page
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 12
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Applications Section
APPLICATION CONSIDERATIONS
Input System Instability: This condition can occur because any DC-DC converter appears incrementally as a negative resistance load.
A detailed application note titled “Input System Instability” is available on www.SynQor.com which provides an understanding of why this
instability arises, and shows the preferred solution for correcting it.
Application Circuits: A typical circuit diagram, Figure C below details the input filtering and voltage trimming.
Vin(+)
Vin
External
Input
Filter
Electrolytic
Capacitor
100μF
ESR =~ 0.2Ω
Vout(+)
Vsense(+)
Trim
ON/OFF
2 x 22μF
local ceramic
Rtrim-up
or
Rtrim-down
Vsense(-)
Vin(-)
Cload
Iload
Vout(-)
Figure C: Typical Application Circuit (negative logic unit, permanently enabled).
Input Filtering and External Input Capacitance: Figure D below shows the internal input filter components. This filter dramatically
reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended
external input capacitance is specified in the Input Characteristics section of the Electrical Characteristics. More detailed information is
available in the application note titled “EMI Characteristics”, www.SynQor.com.
Output Filtering and External Output Capacitance: Figure D below shows the internal output filter components. This filter
dramatically reduces output voltage ripple. However, some minimum external output capacitance is required, as specified in the Output
Characteristics section on the Electrical Characteristics page. No damage will occur without this capacitor connected, but peak output
voltage ripple will be much higher.
Lin
Vin(+)
Lout/2
Vout(+)
C1
C2
Regulation
Stage
Current
Sense
Isolation
Stage
Vin(_)
Cout
Lout/2
Vout(-)
Figure D: Internal Input and Output Filter Diagram (component values listed in Electrical Characteristics section).
Product # BQ60120HEx30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 13
Input: 35-75V
Output: 12V
Current: 30A
Package: Half-brick
Ordering Information
Part Numbering System
Ordering Information
The part numbering system for SynQor’s dc-dc converters follows the format
shown in the example below.
The tables below show the valid model numbers and ordering options for
converters in this product family. When ordering SynQor converters, please
ensure that you use the complete 15 character part number consisting of
the 12 character base part number and the additional characters for options.
Add “-G” to the model number for 6/6 RoHS compliance.
BQ 6 0 1 2 0 H E A 3 0 N R S - G
6/6 RoHS
Options
(see
Ordering Information)
Output Current
Model Number
Input Voltage
BQ60120HEw25xyz-G
BQ60120HEw30xyz-G
35-75V
35-75V
Output
Voltage
12V
12V
Max Output
Current
25A
30A
Thermal Design
Performance Level
Package Size
The following options must be included in place of the w x y z spaces in the
model numbers listed above.
Output Voltage
Input Voltage
Product Family
Thermal Design
A - Open Frame
B - Baseplated
The first 12 characters comprise the base part number and the last 3
characters indicate available options. The “-G” suffix indicates 6/6 RoHS
compliance.
Options Description: w x y z
Enable Logic
Pin Style
N - Negative
P - Positive
K - 0.110"
N - 0.145"
R - 0.180"
Y - 0.250"
Feature Set
S - Standard
Application Notes
A variety of application notes and technical white papers can be downloaded
in pdf format from our website.
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium, Hexavalent
Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated
Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor
product is 6/6 RoHS compliant. For more information please refer to
SynQor’s RoHS addendum available at our RoHS Compliance / Lead Free
Initiative web page or e-mail us at [email protected]
Not all combinations make valid part numbers, please contact SynQor for
availability.
Contact SynQor for further information and to order:
PATENTS
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # BQ60120HEx30
978-849-0600
888-567-9596
978-849-0602
[email protected]
www.synqor.com
155 Swanson Road
Boxborough, MA 01719
USA
Phone 1-888-567-9596
SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter
products. Any that apply to the product(s) listed in this document are identified by markings on
the product(s) or on internal components of the product(s) in accordance with U.S. patent laws.
SynQor’s patents include the following:
5,999,417
6,222,742
6,545,890
6,594,159
6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
7,765,687
7,787,261
8,023,290
8,149,597
8,493,751
8,644,027
9,143,042
WARRANTY
SynQor offers a three (3) year limited warranty. Complete warranty
information is listed on our website or is available upon request from SynQor.
www.synqor.com
Doc.# 005-2BH612M Rev. F
10/01/15
Page 14
Similar pages