BWA40 Series 20130814A

Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
Features
Wide 2 : 1 Input Voltage Range (9~18V,18~36V,36~75V)
Remote On/Off
Input / Output Isolation Voltage: 1.5K VDC
High Efficiency up to 90%
Output Short Circuit Protection:
Hiccup & Auto Recovery
Over Voltage Protection: Clamp Mode
Over Temperature Protection
Description
Shielded Metal Case with Insulated Baseplate
Lead Free Design, RoHS Compliant
Adjustable Output Voltage
Optional Heat-sink
Customer Design Available
Safety Standard Approval : IEC / EN 60950-1
The BWA40 Series are isolated 40W DC/DC converters.
Designed with highly efficiency, allow the operating
temperature range of these units to be -40°C to +85°C in
a 50.8×50.8×10.2mm shielded metal case. Further
features include wide 2 : 1 input voltage range, remote
on/off control, short-circuit protection, over voltage
protection and over temperature protection.
Applications
These converters are well suitable for battery operated
equipment, measurement equipment, telecom, wireless
network, Industry control system, everywhere where
isolated, tightly regulated voltages and compact size are
required.
Technical Specification
Model
Number
Input Voltage
Range
BWA40-12S0
BWA40-12S1
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
(2) Capacitive
Output Current (mA)
Input Current (mA)
Eff .
Voltage
Load, max.
(1)
(%)
(3)
Min. Load
Full. Load
No Load
Full Load
(V)
(uF)
3.3
0
8000
158
2683
86
38000
5
0
8000
166
3968
88
28000
12
0
3300
48
3976
87
5000
BWA40-12D2
±12
0
±1800
144
4444
85
2200
BWA40-12D3
±15
0
±1400
133
4321
85
1800
BWA40-24S0
3.3
0
8000
79
1310
88
38000
BWA40-24S1
5
0
8000
100
1938
90
28000
12
0
3300
34
1919
90
5000
BWA40-24D2
±12
0
±1800
66
2118
89
2200
BWA40-24D3
±15
0
±1400
67
2059
89
1800
BWA40-48S0
3.3
0
8000
56
655
88
38000
BWA40-12S2
BWA40-24S2
9~18V
Nominal:12V
18~36V
Nominal:24V
5
0
8000
66
969
90
28000
12
0
3300
18
959
90
5000
BWA40-48D2
±12
0
±1800
31
1047
90
2200
BWA40-48D3
±15
0
±1400
28
1017
90
1800
BWA40-48S1
BWA40-48S2
36~75V
Nominal:48V
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Rev:20130814A
Page 1 of 8
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
Input Specifications
Input voltage
12V nominal input
9-18V
24V nominal input
18-36V
48V nominal input
36-75V
Input filter
Pi type
12V input
25V
Input surge voltage
24V input
50V
(100ms max.)
48V input
100V
Input reflected ripple current
Nominal Vin and full load
Start up time
Nominal Vin and constant resistive load
Remote ON/OFF
100mAp-p typ.
78ms typ.
Open or 3.5V<Vr<12V
Converter: ON
Short
Converter: OFF
(4)
or 0V<Vr<0.7V
Sourcing current of remote control pin
Nominal Vin
<0.2 mA
Idle input current (at Remote OFF state)
Nominal Vin
<20 mA
Environmental Specifications
-40°C to +85°C (with derating)
Operating ambient temperature
+100°C
Maximum case temperature
-55°C to +105°C
Storage temperature range
95% RH max.
Relative humidity
±0.02% / °C max.
Temperature coefficient
Output Specifications
43.2 Watts max.
Output power
Voltage accuracy
Full load and nominal Vin
±1%
See table
Minimum load
Line regulation
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
±0.5%
Single
±0.5%
Dual
±0.5%
Unbalanced load 25% to 100% full load
Ripple and Noise (20MHz Bandwidth)
Over voltage protection
(Zener Diode Clamp)
±3%
Single outputs
50mVp-p max.
Dual outputs
85mVp-p max.
3.3Vout models
3.9V
5Vout models
6.2V
12Vout models
15V
15Vout models
18V
Capacitive load
Over load protection
See table
% of full load at nominal input
110% min.
115°C typ.
Thermal shutdown
Hiccup, automatic recovery
Short circuit protection
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Rev:20130814A
Page 2 of 8
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
Transient response settling time
50% load step change
300µs typ.
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
Efficiency
Nominal input
See table
Isolation voltage
Input to output
General Specifications
Isolation resistance
1500VDC
9
500VDC
10 Ohms min.
Isolation capacitance
1200pF typ.
Switching frequency
300kHz typ.
5
Reliability, calculated MTBF
9.17 × 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
FR4 PCB
Silicon rubber (UL94 V-0)
Potting material
2.00 × 2.00 × 0.40 Inch
Dimensions
(50.8 × 50.8 × 10.2 mm)
60g (2.11oz) typ.
Weight
BWA40 Series
BWA40 Series
Power Derating Curve without Heatsink(5)
Power Derating Curve with Heatsink (5)
120
Output Power (%)
Output Power (%)
120
100
80
60
40
20
0
-40
-20
0
20
40
59.1
60
100
80
60
40
20
0
80
100
120
-40
-20
20
40
66.1
60
80
BWA40-48S1
BWA40-48S1
Input voltage vs. Efficiency
Output Current vs. Efficiency
100
95
90
85
80
75
70
65
60
18
20
22
24
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26
28
100
120
7.2
8.0
Ambient Temp.TA (℃)
Efficiency (%)
Efficiency (%)
Ambient Temp.TA (℃)
0
30
32
34
36
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100
95
90
85
80
75
70
65
60
55
50
0.8
1.6
2.4
3.2
4.0
Rev:20130814A
4.8
5.6
6.4
Page 3 of 8
Bothhand USA
Input voltage (V)
BWA40-48S1
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Output Current (A)
BWA40-48S1
Transient Response at 50%~100% Max Load
Loop Gain & Phase at Vi=48V,Full Load
Note
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. For each output.
4. Short to -Vin (Pin 2).
5. Based on BWA40-48S1.
Mechanical Dimensions
Pin
1
2
3
4
5
6
7
8
9
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
Remote On/Off
No function
No pin
-Sense
+Vout
+Sense
Common
+Vout
Common
-Vout
-Vout
Trim
Unit: mm [inch]
Tolerance:±0.5[±0.02]
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Rev:20130814A
Page 4 of 8
Bothhand USA
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Specifications subject to change without notice.
Heat-sink (Option)
Material: Aluminum
Weight:
19g (0.67oz) (without converter)
Note:
The product label on converter has to be
removed before mounting the heat-sink.
For volume orders, converters will be supplied
with heat-sink already mounted. Please contact
factory for quotation.
Separate heat-sinks are only available for
prototypes and small quantity orders.
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Rev:20130814A
Page 5 of 8
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
Test Configurations
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
A
A
DC
Power Supply
DC/DC
converter
V
V
Load
◎DC Power Supply: It offers a wide voltage and current range precisely.
◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A
2 ranges+(0.3% rdg + 2 digits).
◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits).
◎Load: At full load.
◎Wires: The resistance of the wires must be small.
1. Input voltage range: Narrow input voltage range(±10%)、wide input voltage range (2:1 and 4:1)。
EX: Narrow input voltage range(±10%)
5V nominal input 4.5~5.5V
12V nominal input 10.8~13.2V
24V nominal input 21.6~26.4V
Wide input voltage range 2:1
5V nominal input 12V nominal input 24V nominal input 48V nominal input 4.5~9V
9~18V
18~36V
36~75V
Wide input voltage range 4:1 (W)
24V nominal input 9~36V
48V nominal input 18~75V
2. Input power :
Pin = Vin x Iin
Vin:Input voltage
Iin:Input current
Pout = Vout x Iout
Vout:Output voltage
Iout:Output current
3. Output power :
4. Efficiency :
Efficiency =
Pout
Pin
x100%
Pout: Output power
Pin: Input power
5. Voltage accuracy:
│
│Vout-Vout(nominal)│
Vout
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x100%
Vout:Output voltage
Vout(nominal):Nominal output voltage
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Rev:20130814A
Page 6 of 8
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
││││
││││
6. Line regulation: (1) Wide input voltage range and regulated output voltage series.
│Vout(LL)-Vout(HL)│
│
Vout(LL)
LL: Low Line input voltage
HL: High Line input voltage
x100%
(2) Narrow input voltage range(±10%)and unregulated output voltage series.
Line regulation=
Δ Vout
Δ Vin
ΔVout = Vout(+10%)-Vout(-10%) x100%
Vout
Vout(+10%):Output voltage at Vin = 1.1xVin(nominal)&full load
Vout(-10%):Output voltage at Vin = 0.9xVin(nominal)&full load
Vout:Output voltage at Vin = Vin(nominal)&full load
ΔVin = Vin(+10%)-Vin(-10%) x100%
Vin(nominal)
Vin(+10%):Input voltage = 1.1xVin(nominal)
Vin(-10%):Input voltage = 0.9xVin(nominal)
Vin(nominal):Nominal Input voltage
7. Load regulation :
│ x100%
│Vout(FL)-Vout(NL)│
Vout(FL)
Vout(FL): Output voltage at full load
Vout(NL): Output voltage at 25% full load or 10% full load
8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
Ripple&Noise
Noise
Ripple
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Rev:20130814A
Page 7 of 8
Isolated DC-DC Converters
BWA40 Series -- 40Watt
Bothhand USA
Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
converter
Co
Load
Oscilloscope
Copper strip
Co: usually 0.47uF.
9. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is
Output Power (%)
drawn from the output and the device is already running. The temperature derating curve shows the operating
power-temperature range. As shown below.
120
100
80
60
40
20
0
-40
-20
0
20
40
59.1
60
80
100
120
Ambient Temp.TA (℃)
10. Switching frequency: The nominal operating frequency of the DC-DC converters.
11. Input to output isolation: The dielectric breakdown strength test between input and output circuits. This is the
isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute.
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Rev:20130814A
Page 8 of 8
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