The SRBH-06H1A1 is part of the low-cost non-isolated DC-DC
power converter series providing up to 6 A output current.
The output is closely regulated and the efficiency of 3.3 VDC output
is typically 89% at full load.
Typical features include remote on/off, input under-voltage lockout,
over current protection and short circuit protection.
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•
•
•
•
•
•
•
•
•
•
8 - 36 VDC Input
3.3 - 5 VDC @ 6 A Output
Non-Isolated Output
High Efficiency
High Power Density
Excellent Thermal Performance
OCP/SCP
Remote On/Off
Input Under-Voltage Lockout
Low Cost
Class II, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592B)
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•
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Distributed Power Architectures
Data Networking Equipment
Telecommunications Applications
SRBH-06H1A1
2
MODEL
NUMBER
SRBH-06H1A1G
SRBH-06H1A1R
S
R
Mounting Type
RoHS
Status
SMD
OUTPUT
VOLTAGE
INPUT
VOLTAGE
MAX.
OUTPUT
CURRENT
MAX.
OUTPUT
POWER
TYPICAL EFFICIENCY
3.3 - 5 V
8 - 36 V
6A
30 W
89% (Vo = 3.3 V, Io = 6 A)
RoHS
BH
-
Series Name
Arrow Head
PARAMETER
06
H
1A
1
Output
Current
Input Range
Output Voltage
Active Logic
6A
8 – 36 V
3.3 - 5.0 V
DESCRIPTION
Continuous Non-operating Input
Voltage
Remote On/Off
Active High
x
Package Type
R – Tape & Reel
Package
G – Tray Package
MIN
TYP
MAX
UNITS
-0.3
-
38
V
-0.3
-
12
V
Ambient Temperature
-40
-
85
C
Storage Temperature
-40
-
125
C
-
-
2000
m
Altitude
NOTE: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the
device.
All specifications are typical at 25°C unless otherwise stated.
PARAMETER
DESCRIPTION
Operating Input Voltage
Input Current (full load)
TYP
MAX
UNITS
8
-
36
V
-
1.9
-
A
Input Current (no load)
-
30
-
mA
Remote Off Input Current
-
1.7
-
mA
Input Reflected Ripple Current (rms)
-
50
100
mA
-
70
150
mA
-
-
1
A2s
-
7
7.5
V
3.5
4
-
V
Input Reflected Ripple Current (pk-pk)
Vin = 12 V, Vo = 3.3 V, Io = 6 A
MIN
1 µH, 2*100 µF/50 V electrolytic capacitors,
3*4.7 µF/50 V ceramic capacitor at the input.
2
I t Inrush Current Transient
Turn on Voltage Threshold
Turn off Voltage Threshold
Input under voltage lockout (UVLO).
CAUTION: All specifications are typical at nominal input, full load at 25°C unless noted.
tech.support@psbel.com
SRBH-06H1A1
3
All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
PARAMETER
DESCRIPTION
MIN
TYP
MAX
Output Voltage Set Point
Vin = 12 V, Io = 50% full load
3.234
3.300
3.366
V
-
±10
±20
mV
-
±10
±20
mV
-
30
50
mV
-
60
100
mV
-
25
50
mV
0
-
6
A
7
10
13
A
-
6
10
ms
Load Regulation
Line Regulation
Regulation Over Temperature
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
-40 °C to 85 °C
Vout = 3.3 V
Output Current Range
Output DC Current Limit
Hiccup mode
Turn on Time (from Vin)
Turn on Time (from Enable)
Output Capacitance
UNITS
-
1
-
ms
220
-
1200
µF
-
100
200
mV
-
300
500
µs
-
100
200
mV
-
300
500
µs
MIN
TYP
MAX
UNITS
87
89
-
%
Transient Response
△V 50%~100% of Max Load
Settling Time
△V 100%~50% of Max Load
di/dt = 0.5 A/µs; Vin = 12 V; Vout = 3.3 V;
with a 220 µF Oscan capacitor at the output
Settling Time
PARAMETER
DESCRIPTION
Efficiency
Vin = 12 V, Vo = 3.3 V, full load
Switching Frequency
-
300
-
kHz
3.3
-
5
V
Weight
-
4.3
-
g
MTBF
-
426,574,0
-
hours
Output Trim Range
Dimensions (L × W × H)
PARAMETER
DESCRIPTION
0.885 x 0.512 x 0.320
inch
22.48 x 13.00 x 8.13
mm
MIN
TYP
MAX
UNITS
-0.3
-
1
V
2.8
-
12
V
-
-
10
µA
Enable
Signal Low (Unit Off)
Signal High(Unit On)
ENABLE pin open, unit on
Sourcing current
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
4
Efficiency vs. Output Current at Tnor
1
0.9
EFFICIENCY (%)
0.8
0.7
8V
0.6
12V
0.5
24V
0.4
36V
0.3
0.2
0.1
0
0.3
0.6
1.2
1.8
2.4
3
3.6
4.2
4.8
5.4
6
OUTPUT CURRENT (Amp)
Figure 1. Efficiency data
Airflow Direction
Figure 2. Airflow direction
Figure 3. Thermal derating curve @ Vin = 12 V, Vo = 3.3 V
tech.support@psbel.com
SRBH-06H1A1
5
Figure 4. Ripple and noise at no load, Vin = 12 V
Figure 5. Ripple and noise at full load, Vin = 12 V
Figure 6. Ripple and noise at no load, Vin = 24 V
Figure 7. Ripple and noise at full load, Vin = 24 V
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
6
Figure 8. Ripple and noise at no load, Vin = 36 V
Figure 9. Ripple and noise at full load, Vin = 36 V
Note: Ripple and Noise at 3.3 VDC output, with a 220 µF oscan capacitor cap at the output, Ta = 25°C
tech.support@psbel.com
SRBH-06H1A1
7
Figure 10. Startup
Figure 11. Shutdown
Test Condition: Vin = 12 V, Iout = 6 A, with a 220 µF oscan capacitor at the output.
Figure 12. 50% to 100% load transient at 12 Vdc input
5 Vdc output and Ta = 25°C
Figure 13. 100% to 50% load transient at 12 Vdc input,
5 Vdc output and Ta = 25°C
Test Condition: di/dt = 0.5 A/µs, Vin = 12 V, with a 220 µF oscan capacitor at the output.
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
8
Input Current
Under-voltage Lockout
Voltage Falling
Voltage Rising
V1
V2
Input Voltage (V)
Figure 14. Input under-voltage lockout
V1 = 4 V
V2 = 7 V
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal output voltage of the
converter (Vnom = 3.3 V) are shown below. The Trim Down resistor should be connected between the Trim pin and Vout. The Trim
Up resistor should be connected between the Trim pin and Ground. Only one of the resistors should be used for any given
application.
R trimdown=
151.6
− 70.2
Vnom -Vadj
R trimup=
33.7
-14
Vadj -Vnom
tech.support@psbel.com
SRBH-06H1A1
9
The SRBH-06H1A1 modules are designed to be compatible with reflow soldering process. The suggested Pb-free solder paste is
Sn/Ag/Cu(SAC). The recommended reflow profile using Sn/Ag/Cu solder is shown in the following. Recommended reflow peak
temperature is 245°C while the part can withstand peak temperature of 260°C maximum for 10seconds. This profile should be
used only as a guideline. Many other factors influence the success of SMT reflow soldering. Since your production environment
may differ, please thoroughly review these guidelines with your process engineers.
Figure 15. Soldering information
The SRBH-06H1A1 modules have a MSL rating of 3.
The SRBH-06H1A1 modules are designed to be compatible with J-STD-033 Rev:A (Handling, Packing, Shipping and Use of
Moisture /Reflow Sensitive surface Mount devices). Moisture barrier bags (MBB) with desiccant are applied. The recommended
storage environment and handling procedure is detailed in J-STD-033.
This component has been designed, handled, and packaged ready for Pb-free reflow soldering. If the assembly shop follows JSTD-033 guidelines, no pre-bake of this component is required before being reflowed to a PCB. Our packaging tray can only
withstand temperature of 70°C max.
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
10
Figure 16. Outline
NOTES:
1) All Pins: Material - Copper Alloy;
Finish – Gold plated
2)
Un-dimensioned components are shown for visual reference only.
3)
All dimensions in inch [mm]; Tolerances: x.xx +/-0.02 inch [0.51 mm]. x.xxx +/-0.010 inch [0.25 mm].
tech.support@psbel.com
SRBH-06H1A1
11
Figure 17. Pins
PIN
FUNCTION
PIN
FUNCTION
1
Remote On/Off
5
Trim
2
Vin
6
N/A
3
GND
7
N/A
4
Vout
Figure 18. Recommended pad layout
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
12
375
250
3.625
Figure 19. Packaging information-1
tech.support@psbel.com
SRBH-06H1A1
13
Figure 20. Packaging information-2
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 49 8941
North America
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20143_AG
SRBH-06H1A1
14
DATE
REVISION
CHANGES DETAIL
APPROVAL
2017-03-23
AA
First release.
S.Wang
2017-05-16
AB
S.Wang
2017-08-29
AC
2018-04-26
AD
Change MTBF UVLO, Add packaging information.
Update Line and load Regulation, Output Current Limit, Transient response, Input
Reflected Ripple Current.
Update PRE-BAKING.
2018-05-24
AE
Add G – Tray package, Update MD.
S.Wang
2021-01-11
AF
Update outline notes to gold plated.
XF.Jiang
2021-07-05
AG
Add object ID. Add thermal test airflow direction.
XF.Jiang
S.Wang
S.Wang
For more information on these products consult: tech.support@psbel.com
NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
tech.support@psbel.com
