BOB3W series

Isolated DC-DC Converters
BOB3W Series -- 3 Watt
Bothhand USA
Features
Wide 4 : 1 Input Voltage Range(9~36V, 18~75V)
Remote On/Off
Input / Output Isolation Voltage: 1.5K Vdc
Extended Operating Temperature Range: -40°C to +85°C
Output Short Circuit Protection:
Description
Continuous & Auto Recovery
Over Voltage Protection: Clamp Mode
Meet EN55022, Class A (Radiation)
Shielded Metal Case with Insulated Baseplate
Lead Free Design, RoHS Compliant
The BOB3W Series are isolated 3W DC/DC converters.
Designed with highly efficiency, allow the operating
temperature range of these units to be -40°C to +85°C in
a 24 pin DIP package with industry-standard footprint.
Further features include wide 4 : 1 input voltage range,
remote on/off control, short-circuit protection and over
voltage protection.
24pin DIP Package with Industry-Standard Footprint
Applications
Customer Design Available
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
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
(2)
Output
Output Current (mA)
Input Current (mA)
Eff . Capacitive
Voltage
max.
(1)
(%) Load,
(3)
Min. Load
Full. Load
No Load
Full Load
(uF)
(Vdc)
BOB3-24S0W
3.3
15
750
6
146
75
1000
BOB3-24S1W
5
4
600
4
170
77
860
BOB3-24S2W
12
0
250
11
165
80
220
15
0
200
11
168
79
191
±5
0
±300
9
168
78
477
BOB3-24D2W
±12
0
±125
15
167
79
147
BOB3-24D3W
±15
0
±100
18
171
77
94
BOB3-48S0W
3.3
18
750
3
74
74
2500
BOB3-48S1W
5
15
600
2
85
77
1900
BOB3-48S2W
12
0
250
5
83
79
247
15
0
200
6
85
77
169
±5
0
±300
6
86
77
399
BOB3-48D2W
±12
0
±125
8
85
78
110
BOB3-48D3W
±15
0
±100
10
87
76
69
9~36V
BOB3-24S3W Nominal:24Vdc
BOB3-24D1W
18~75V
BOB3-48S3W Nominal:48Vdc
BOB3-48D1W
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Rev:20100211A
Page 1 of 4
Isolated DC-DC Converters
BOB3W Series -- 3 Watt
Bothhand USA
Input Specifications
Input Voltage
24V nominal input
9-36Vdc
48V nominal input
18-75Vdc
Input filter
Pi Type
Input surge voltage
24V input
50Vdc
(100ms max.)
48V input
100Vdc
Input reflected ripple current
Nominal Vin and full load
Start up time
Nominal Vin and constant resistive load
Remote ON/OFF
60mAp-p typ.
540ms typ.
Open or 3.5V<Vr<12V
Converter: ON
Short
Converter: OFF
(4)
or 0V<Vr<1.2V
Sourcing current of remote control pin
Nominal Vin
<0.2 mA
Idle input current (at Remote OFF state)
Nominal Vin
<2.5 mA
Environmental Specifications
Operating ambient temperature
-40°C to +85°C (with derating)
Maximum case temperature
+100°C
Storage temperature range
-55°C to +105°C
Relative humidity
5% to 95% RH
Temperature coefficient
±0.02% / °C max.
EMC Characteristics
EMI
EN55022 (radiation)
Meet class A
Output Specifications
Output power
Voltage accuracy
3 Watts max.
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%
20MHz bandwidth
60mVp-p max.
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 at nominal input
Short circuit protection
Continuous, automatic recovery
Transient response settling time
50% load step change
Transient response over shoot
di/dt=0.8A/µs
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155% typ.
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520µs typ.
≤ ±5% of Vo
Rev:20100211A
Page 2 of 4
Isolated DC-DC Converters
BOB3W Series -- 3 Watt
Bothhand USA
General Specifications
Efficiency
Nominal input
Isolation voltage
Input to output
Isolation resistance
See table
1500Vdc
9
500Vdc
10 Ohms min.
Isolation capacitance
300pF 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
Potting material
Silicon rubber (UL94V-0)
1.25 × 0.80 × 0.40 Inch
Dimensions
(31.75 × 20.32 × 10.16 mm)
Weight
17.2g (0.59oz) typ.
BOB3WSeries
Output Power (%)
Power Derating Curve(5)
Ambient Temp.TA (℃
℃)
BOB3-48S1W
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
BOB3-48S1W
Input voltage vs. Efficiency
Input voltage (V)
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Output Current (A)
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Rev:20100211A
Page 3 of 4
Isolated DC-DC Converters
BOB3W Series -- 3 Watt
Bothhand USA
BOB3-48S1 W
BOB3-48S1W
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 2,3).
5. Based on BOB3-48S1W.
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]
Specifications subject to change without notice.
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Rev:20100211A
Page 4 of 4