BOB3WH3 Series 20130812A

Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
Features
Wide 4 : 1 Input Voltage Range (9~36V,18~75V)
High Power Density
High Efficiency
Operating Temperature Range: -40°C to +85°C
Output Short Circuit Protection
Output Over Voltage Protection
Remote On /Off Control
Applications
Input/ Output Isolation 3000 VDC
Distributed power system
Shielded Metal Case with Insulated Baseplate
Telecommunication application
Lead Free Design, RoHS Compliant
Battery powered equipment
24pin DIP Package with Industry-Standard Footprint
Industrial application
Safety Standard / Approval : IEC/EN60950-1
Process control equipment
Transportation equipment
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.
Range
(%)
(3)
Min. Load (1)
Full. Load
No Load
Full Load
(V)
(uF)
BOB3-24S0WH3
3.3
22
750
5
143
76
470
BOB3-24S1WH3
5
10
600
4
169
78
330
12
0
250
9
164
80
147
15
0
200
10
14
80
82
BOB3-24D1WH3
±5
0
±300
8
167
79
168
BOB3-24D2WH3
±12
0
±125
14
164
80
47
BOB3-24D3WH3
±15
0
±100
16
164
80
33
BOB3-48S0WH3
BOB3-24S2WH3
BOB3-24S3WH3
9~36V
Nominal:24Vdc
3.3
11
750
3
72
76
470
BOB3-48S1WH3
5
10
600
2
84
78
330
BOB3-48S2WH3
12
0
250
5
83
79
100
15
0
200
6
82
80
68
BOB3-48D1WH3
±5
0
±300
5
84
78
168
BOB3-48D2WH3
±12
0
±125
8
83
79
33
BOB3-48D3WH3
±15
0
±100
9
86
77
33
18~75V
BOB3-48S3WH3
Nominal:48Vdc
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Rev:20130812A
Page 1 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
Input Specifications
Input Voltage
24V nominal input
9-36V
48V nominal input
18-75V
Pi Type
Input filter
Input surge voltage
24V input
50V
(100ms max.)
48V input
100V
Input reflected ripple current
Nominal Vin and full load
Remote On/Off control
Converter: ON
Converter: OFF
Sourcing current of remote control pin
Nominal Vin
<0.2 mA
Idle input current (at Remote OFF state)
Nominal Vin
<2.5 mA
Start up time
Nominal Vin and constant resistive load
72mAp-p typ.
Open or 3.5V<Vr<12V
Short (4) or 0V<Vr<1.2V
400ms max.
Environmental Specifications
-40°C to +85°C (with derating)
Operating ambient temperature
Maximum case temperature
+100°C
-55°C to +105°C
Storage temperature range
5% to 95% RH
Relative humidity
±0.02% / °C max.
Temperature coefficient
Output Specifications
3 Watts max.
Output power
Voltage accuracy
Full load and nominal Vin
±2%
Minimum load
Line regulation
See table
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
±3%
60mVp-p max.
20MHz bandwidth
3.3Vout models
3.9V
Over voltage protection
5Vout models
6.2V
(Zener Diode Clamp)
12Vout models
15V
15Vout models
18V
Capacitive load
Over load protection
See table
% of full load
120% min.
Continuous, automatic recovery
Short circuit protection
Transient response settling time
50% load step change
1320µs max.
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
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Rev:20130812A
Page 2 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
General Specifications
Efficiency
Nominal input
Isolation voltage
Input to output
Isolation resistance
See table
3000VDC
9
500VDC
10 Ohms min.
Isolation capacitance
270pF typ.
Switching frequency
300kHz typ.
6
Reliability, calculated MTBF
2.53 × 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Silicon rubber (UL94V-0)
Potting material
1.25 × 0.80 × 0.40 Inch
Dimensions
(31.75 × 20.32 × 10.16 mm)
Weight
17.2g (0.59oz) typ.
BOB3WH3Series
Output Power (%)
Power Derating Curve(5)
BOB3-48S1WH3
BOB3-48S1WH3
Input voltage vs. Efficiency
Output Current vs. Efficiency
85
85
80
75
70
65
60
55
50
45
Efficiency (%)
Efficiency (%)
Ambient Temp.TA (℃)
80
75
70
65
60
55
50
45
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Rev:20130812A
0.60
75
0.54
66
0.48
60
0.42
54
0.36
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48
0.30
42
0.24
36
0.18
30
0.12
24
0.06
18
Page 3 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
Input voltage (V)
Output Current (A)
BOB3-48S1WH3
Transient Response at 50%~100% Max Load
BOB3-48S1WH3
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 2,3).
5. Based on BOB3-48S1WH3.
Mechanical Dimensions
Pin
1
2
3
9
11
14
16
22
23
Pin Assignment
Single
Dual
Remote On/Off Remote On/Off
-Vin
-Vin
-Vin
-Vin
No pin
Common
No function
-Vout
+Vout
+Vout
-Vout
Common
+Vin
+Vin
+Vin
+Vin
Unit: mm [inch]
Tolerance:±0.5[0.02]
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Rev:20130812A
Page 4 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
Specifications subject to change without notice.
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%
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Rev:20130812A
Page 5 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 Watt
Bothhand USA
Vout:Output voltage
Vout(nominal):Nominal output voltage
││││
││││
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 :
│Vout(FL)-Vout(NL)│
│ x100%
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:20130812A
Page 6 of 7
Isolated DC-DC Converters
BOB3WH3 Series -- 3 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:20130812A
Page 7 of 7
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