BOB8 series

Isolated DC-DC Converters
BOB8 Series -- 8 Watt
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
Extended Operating Temperature Range: -40°C to +85°C
Output Short Circuit Protection:
Description
Continuous & Auto Recovery
The BOB8 Series are isolated 8W 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 2 : 1 input voltage range,
remote on/off control, short-circuit protection and over
voltage protection.
Over Voltage Protection: Clamp Mode
Meet EN55022, Class A (Radiation)
Shielded Metal Case with Insulated Baseplate
Lead Free Design, RoHS Compliant
24pin DIP Package with Industry-Standard Footprint
Customer Design Available
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 All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
BOB8-12S0
Output
Voltage
(Vdc)
3.3
BOB8-12S1
5
62
1500
3.4
791
82
3300
BOB8-12S2
12
0
665
24
812
87
650
15
0
535
24
832
85
400
±5
0
±800
27
865
83
1650
BOB8-12D2
±12
0
±335
31
812
86
160
BOB8-12D3
±15
0
±265
28
824
86
270
BOB8-24S0
3.3
88
2000
3.6
366
79
6800
BOB8-24S1
5
20
1500
9.3
405
83
3300
BOB8-24S2
12
0
665
14
432
85
440
15
0
535
15
416
85
280
±5
0
±800
14
427
83
1650
BOB8-24D2
±12
0
±335
17
411
86
170
BOB8-24D3
±15
0
±265
17
407
87
180
BOB8-48S0
3.3
72
2000
2
183
80
6800
BOB8-48S1
5
0
1500
5
200
83
3300
BOB8-48S2
12
0
665
7
205
86
400
15
0
535
7
203
86
200
±5
0
±800
6
213
83
1750
BOB8-48D2
±12
0
±335
7
205
86
120
BOB8-48D3
±15
0
±265
8
203
87
250
Model
Number
Input Voltage
Range
9~18V
BOB8-12S3 Nominal:12Vdc
BOB8-12D1
18~36V
BOB8-24S3 Nominal:24Vdc
BOB8-24D1
36~75V
BOB8-48S3 Nominal:48Vdc
BOB8-48D1
E-mail: sales@bothhandUSA.com
Output Current (mA)
Min. Load
(1)
Input Current (mA)
Full. Load
No Load
Full Load
82
2000
6.8
733
http://www.bothhandUSA.com
Rev:20100211A
(2)
Eff . Capacitive
max.
(%) Load,
(3)
(uF)
79
6800
Page 1 of 4
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
BOTHHAND USA
Input Specifications
Input Voltage
12V nominal input
9-18Vdc
24V nominal input
18-36Vdc
48V nominal input
36-75Vdc
Input filter
Pi Type
12V input
25Vdc
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
30mAp-p typ.
600ms 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
8 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
±0.2%
Single
±1%
Dual
±1%
Unbalanced load 25% to 100% full load
Ripple and Noise
±5%
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
Transient response settling time
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150% typ.
Continuous, automatic recovery
50% load step change
http://www.bothhandUSA.com
200µs typ.
Rev:20100211A
Page 2 of 4
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
BOTHHAND USA
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
300pF typ.
Switching frequency
300kHz typ.
6
Reliability, calculated MTBF
3.76 × 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.
BOB8 Series
Output Power (%)
Power Derating Curve(5)
Ambient Temp.TA (℃
℃)
BOB8-48S1
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
BOB8-48S1
Input voltage vs. Efficiency
Input voltage (V)
E-mail: sales@bothhandUSA.com
Output Current (A)
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Rev:20100211A
Page 3 of 4
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
BOTHHAND USA
BOB8-48S1
BOB8-48S1
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 2,3).
5. Based on BOB8-48S1.
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 function
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.
E-mail: sales@bothhandUSA.com
http://www.bothhandUSA.com
Rev:20100211A
Page 4 of 4