BOB8H3 Series 20130813A

Isolated DC-DC Converters
BOB8H3 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: 3.0kVDC
Extended Operating Temperature Range: -40°C to +85°C
Output Short Circuit Protection:
Description
Continuous & Auto Recovery
The BOB8H3 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
Safety Standard / Approval : IEC / EN 60950-1
Technical Specification
Model
Number
Input Voltage
Range
BOB8-12S0H3
BOB8-12S1H3
BOB8-12S2H3
9~18V
Nominal:12V
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.
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
Output Current (mA)
Input Current (mA)
Eff .(2) Capacitive
Voltage
max.
(1)
(%) Load,
(3)
Min. Load
Full. Load
No Load
Full Load
(V)
(uF)
3.3
2000
30
6
719
80
2600
5
22
1500
4
787
83
1600
12
0
665
28
825
85
350
15
0
535
27
823
85
240
BOB8-12D1H3
±5
0
±800
28
849
83
800
BOB8-12D2H3
±12
0
±335
31
827
85
160
BOB8-12D3H3
±15
0
±265
29
805
86
100
BOB8-24S0H3
3.3
34
2000
11
360
80
2600
BOB8-24S1H3
5
0
1500
12
394
83
1600
BOB8-24S2H3
12
0
665
15
412
85
350
15
0
535
13
411
85
240
BOB8-24D1H3
±5
0
±800
17
423
83
800
BOB8-24D2H3
±12
0
±335
19
414
85
160
BOB8-24D3H3
±15
0
±265
16
405
86
100
3.3
42
2000
2
180
80
2600
BOB8-12S3H3
BOB8-24S3H3
BOB8-48S0H3
18~36V
Nominal:24V
36~75V
Nominal:48V
5
0
1500
5
197
83
1600
BOB8-48S2H3
12
0
665
8
204
86
350
BOB8-48S3H3
15
0
535
8
205
86
240
BOB8-48D1H3
±5
0
±800
7
210
83
800
BOB8-48D2H3
±12
0
±335
9
205
86
160
BOB8-48S1H3
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Rev:20130813A
Page 1 of 7
Bothhand USA
BOB8-48D3H3
±15
0
Isolated DC-DC Converters
BOB8H3 Series -- 8 Watt
±265
9
205
85
100
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
Remote ON/OFF
100mAp-p max.
1020ms max.
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
-40°C to +85°C (with 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
EMC Characteristics
EN55022 (radiation)
EMI
Meet class A
Output Specifications
8 Watts max.
Output power
Voltage accuracy
Full load and nominal Vin
±2%
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
±1%
Unbalanced load 25% to 100% full load
Ripple and Noise
±5%
20MHz bandwidth
65mVp-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
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150% typ.
50% load step change
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1200µs max.
Rev:20130813A
Page 2 of 7
Isolated DC-DC Converters
BOB8H3 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
3000VDC
9
500 VDC
10 Ohms min.
Isolation capacitance
280pF 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
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.
BOB8H3 Series
Output Power (%)
Power Derating Curve(5)
BOB8-48S1H3
BOB8-48S1H3
Input voltage vs. Efficiency
Output Current vs. Efficiency
90
85
80
75
70
65
60
55
50
Efficiency (%)
Efficiency (%)
Ambient Temp.TA (℃)
90
85
80
75
70
65
60
55
50
Input voltage (V)
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1.50
75
1.35
68
1.20
64
1.05
60
0.90
56
0.75
52
0.60
48
0.45
44
0.30
40
0.15
36
Output Current (A)
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Rev:20130813A
Page 3 of 7
Isolated DC-DC Converters
BOB8H3 Series -- 8 Watt
Bothhand USA
BOB8-48S1H3
BOB8-48S1H3
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 BOB8-48S1H3.
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.
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Rev:20130813A
Page 4 of 7
Isolated DC-DC Converters
BOB8H3 Series -- 8 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
BOB8H3 Series -- 8 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=
ΔVout =
Δ Vout
Δ Vin
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
Δ Vin =
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)│
Vout(FL)
x100%
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
BOB8H3 Series -- 8 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 drawn from the output and the device is already running. The temperature derating curve shows the operating
Output Power (%)
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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