BUA15L Series 20130813A

Isolated DC-DC Converters
BUA15L Series -- 15 Watt
Bothhand USA
Features
Wide 2 : 1 Input Voltage Range(9~18V,18~36V,36~75V)
Output Current up to 4A
Fixed Switching Frequency
Input / Output Isolation Voltage: 1.5K VDC
Extended Operating Temperature Range: -40°C to +71°C Description
The BUA15L Series are isolated 15W DC/DC converters.
Output Short Circuit Protection:
Designed with highly efficiency, allow the operating
temperature range of these units to be -40°C to +71°C in
Continuous & Auto Recovery
a 50.8x25.4x10.2mm package with industry-standard
Over Voltage Protection: Clamp Mode
pinout. Further features include wide 2 : 1 input voltage
range, output short-circuit protection and over voltage
Shielded Metal Case with Insulated Baseplate
protection.
Lead Free Design, RoHS Compliant
Industry Standard Pinout
Customer Design Available
Safety Standard / Approval : IEC / EN 60950-1
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
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
(2) Capacitive
Output Current (mA)
Input Current (mA)
Input Voltage
Eff .
Voltage
Load, max.
(1)
Range
(%)
(3)
Min. Load
Full. Load
No Load
Full Load
(V)
(uF)
BUA15-12S0L
3.3
200
4000
7
1467
79
10000
BUA15-12S1L
5.1
120
3000
7
1623
81
600
12
0
1250
18
1543
85
1800
15
0
1000
21
1524
86
990
BUA15-12D2L
±12
0
±625
28
1543
85
470
BUA15-12D3L
±15
0
±500
29
1524
86
100
BUA15-24S0L
3.3
200
4000
5
724
80
10000
BUA15-24S1L
5.1
95
3000
6
791
83
10000
12
0
1250
10
762
86
1700
BUA15-12S2L
BUA15-12S3L
BUA15-24S2L
BUA15-24S3L
9~18V
Nominal:12V
18~36V
Nominal:24V
15
0
1000
11
753
87
660
BUA15-24D2L
±12
0
±625
14
762
86
430
BUA15-24D3L
±15
0
±500
36
762
86
220
BUA15-48S0L
3.3
200
4000
2
362
80
10000
BUA15-48S1L
5.1
120
3000
3
401
82
8440
12
0
1250
6.5
377
87
1000
15
0
1000
8
372
88
470
±12
±15
0
0
±625
±500
8
8
377
377
87
87
330
160
BUA15-48S2L
BUA15-48S3L
36~75V
Nominal:48V
BUA15-48D2L
BUA15-48D3L
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Rev:20130813A
Page 1 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
Bothhand USA
Input Specifications
Input Voltage
12V nominal input
9-18V
24V nominal input
18-36V
48V nominal input
36-75V
Pi Type
Input filter
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
80mAp-p typ.
680ms typ.
Environmental Specifications
-40°C to +71°C(without derating)
Operating ambient temperature
+100°C
Maximum case temperature
-55°C to +105°C
Storage temperature range
5% to 95% RH
Relative humidity
±0.02% / °C max.
Temperature coefficient
Output Specifications
15 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
±1%
Dual
±0.5%
Unbalanced load 25% to 100% full load
Ripple and Noise
±3%
20MHz Bandwidth
75mVp-p max.
3.3Vout models
3.9V
Over voltage protection
5Vout models
6.2V
(Zener Diode Clamp)
12Vout models
15V
15Vout models
18V
See table
Capacitive load
Over load protection
% of full load at nominal input
Continuous, automatic recovery
Short circuit protection
Transient response settling time
50% load step change
Transient response over shoot
di/dt=0.8A/µs
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150% typ.
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2200µs typ.
≤ ±5% of Vo
Rev:20130813A
Page 2 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
Bothhand USA
General Specifications
Efficiency
Nominal input
Isolation voltage
Input to output
See table
1500VDC
9
Isolation resistance
10 Ohms min.
Isolation capacitance
580pF typ.
Switching frequency
300kHz typ.
6
Reliability, calculated MTBF
2.24 × 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Silicon rubber (UL94V-0)
Potting material
2.0 × 1.0 × 0.4 Inch
Dimensions
(50.8 × 25.4 × 10.2 mm)
Weight
32.0g (1.13oz) typ.
BUA15L Series
(4)
Output Power (%)
Power Derating Curve
Ambient Temp.TA (℃)
BUA15-48S1L
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
BUA15-48S1 L
Input voltage vs. Efficiency
Input voltage (V)
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Output Current (A)
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Rev:20130813A
Page 3 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
Bothhand USA
BUA15-48S1L
BUA15-48S1L
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. Based on BUA15-48S1L.
Mechanical Dimensions
Pin
1
2
3
4
5
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
+Vout
+Vout
No pin
Common
-Vout
-Vout
Unit: mm [inch]
Tolerance:±0.5[0.02]
Specifications subject to change without notice.
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Rev:20130813A
Page 4 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
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:20130813A
Page 5 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
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:20130813A
Page 6 of 7
Isolated DC-DC Converters
BUA15L Series -- 15 Watt
Bothhand USA
Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
converter
Co
Oscilloscope
Load
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.
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:20130813A
Page 7 of 7
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