BOTHHAND USA
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
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:
Continuous & Auto Recovery
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
Description
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.
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
BOB8-12S0
BOB8-12S1
9~18V
BOB8-12S3 Nominal:12Vdc
BOB8-12D1
BOB8-12D2
BOB8-12D3
BOB8-24S0
BOB8-24S1
18~36V
BOB8-24S3 Nominal:24Vdc
BOB8-24D1
BOB8-24D2
BOB8-24D3
BOB8-48S0
BOB8-48S1
36~75V
BOB8-48S3 Nominal:48Vdc
BOB8-48D1
BOB8-48D2
BOB8-48D3
BOB8-48S2
BOB8-24S2
BOB8-12S2
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
(1)
(%) Load, max.
(3)
Min. Load
Full. Load
No Load
Full Load
(Vdc)
(uF)
3.3
82
2000
6.8
733
79
6800
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
62
0
0
0
0
0
88
20
0
0
0
0
0
72
0
0
0
0
0
0
1500
665
535
±800
±335
±265
2000
1500
665
535
±800
±335
±265
2000
1500
665
535
±800
±335
±265
3.4
791
812
832
865
812
824
366
405
432
416
427
411
407
183
200
205
203
213
205
203
82
87
85
83
86
86
79
83
85
85
83
86
87
80
83
86
86
83
86
87
3300
650
400
1650
160
270
6800
3300
440
280
1650
170
180
6800
3300
400
200
1750
120
250
24
24
27
31
28
3.6
9.3
14
15
14
17
17
2
5
7
7
6
7
8
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BOTHHAND USA
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
Input Specifications
12V nominal input
Input Voltage
24V nominal input
48V nominal input
Input filter
12V input
Input surge voltage
(100ms max.)
Input reflected ripple current
Start up time
Remote ON/OFF
Sourcing current of remote control pin
Idle input current (at Remote OFF state)
24V input
48V input
Nominal Vin and full load
Nominal Vin and constant resistive load
Converter: ON
Converter: OFF
Nominal Vin
Nominal Vin
(4)
9-18Vdc
18-36Vdc
36-75Vdc
Pi Type
25Vdc
50Vdc
100Vdc
30mAp-p typ.
600ms typ.
Open or 3.5V＜Vr＜12V
Short
or 0V＜Vr＜1.2V
＜0.2
mA
＜2.5
mA
Environmental Specifications
Operating ambient temperature
Maximum case temperature
Storage temperature range
Relative humidity
Temperature coefficient
-40°C to +85°C (with derating)
+100°C
-55°C to +105°C
5% to 95% RH
±0.02% / °C max.
EMC Characteristics
EMI
EN55022 (radiation)
Meet class A
Output Specifications
Output power
Voltage accuracy
Minimum load
Line regulation
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
Single
Dual
Full load and nominal Vin
8 Watts max.
±2%
See table
±0.2%
±1%
±1%
±5%
60mVp-p max.
3.9V
6.2V
15V
18V
See table
% of full load at nominal input
150% typ.
Continuous, automatic recovery
50% load step change
200µs typ.
Unbalanced load 25% to 100% full load
Ripple and Noise
20MHz bandwidth
3.3Vout models
Over voltage protection
(Zener Diode Clamp)
5Vout models
12Vout models
15Vout models
Capacitive load
Over load protection
Short circuit protection
Transient response settling time
sales@bothhandusa.com
BOTHHAND USA
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
General Specifications
Efficiency
Isolation voltage
Isolation resistance
Isolation capacitance
Switching frequency
Reliability, calculated MTBF
Nominal input
Input to output
500Vdc
9
See table
1500Vdc
10 Ohms min.
300pF typ.
300kHz typ.
3.76 × 10 Hrs
Nickel-coated copper
Non-conductive black plastic
Silicon rubber (UL94V-0)
1.25 × 0.80 × 0.40 Inch
(31.75 × 20.32 × 10.16 mm)
17.2g (0.59oz) typ.
6
Physical Specifications
Case material
Base material
Potting material
Dimensions
Weight
BOB8 Series
Power Derating Curve(5)
Output Power (%)
Ambient Temp.TA (℃)
℃
BOB8-48S1
Input voltage vs. Efficiency
Efficiency (%)
Efficiency (%)
BOB8-48S1
Output Current vs. Efficiency
Input voltage (V)
Output Current (A)
sales@bothhandusa.com
BOTHHAND USA
Isolated DC-DC Converters
BOB8 Series -- 8 Watt
BOB8-48S1
Transient Response at 50%~100% Max Load
BOB8-48S1
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 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
Pin
1
2
3
9
11
14
16
22
23
Unit: mm [inch]
Tolerance:±0.5[0.02]
Specifications subject to change without notice.
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