BUB20 Series 20130814A

Isolated DC-DC Converters
BUB20 Series -- 20 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
Hiccup mode & Auto Recovery
The BUB20 Series are isolated 20W DC/DC converters.
Over Voltage Protection: Clamp Mode
Designed with highly efficiency, allow the operating temperature
Shielded Metal Case with Insulated Baseplate
range of these units to be -40°C to +85°C in a 6 pin DIP package
with industry-standard footprint. Further features include wide 2 :
Lead Free Design, RoHS Compliant
1 input voltage range, remote on/off control, short-circuit
6 pin DIP Package with Industry-Standard Footprint
protection and over voltage protection.
Customer Design Available
Applications
Safety Standard / Approval :IEC/ EN 60950-1
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.
Output
Voltage
(V)
Output Current (mA)
Min. Load
(1)
Input Current (mA)
Full. Load
No Load
Full Load
Eff .
(%)
Capacitive
(3)
Load, max.
(uF)
(2)
BUB20-12S0
3.3
0
4000
61
1418
82
28000
BUB20-12S1
5
0
4000
92
2083
84
26000
1998
12
28
1670
94
88
4900
15
24
1340
90
1982
89
2960
BUB20-12D1
±5
0
±2000
85
2064
85
12000
BUB20-12D2
±12
0
±835
92
1988
88
2020
BUB20-12D3
±15
±8
±670
90
1984
88
880
BUB20-24S0
3.3
0
4000
26
693
83
36560
BUB20-24S1
5
0
4000
33
1019
86
19760
BUB20-24S2
12
0
1670
33
971
90
4600
15
33
1340
31
968
91
2900
BUB20-24D1
±5
0
±2000
31
1004
87
13000
BUB20-24D2
±12
0
±835
34
968
90
2300
BUB20-24D3
±15
0
±670
31
964
91
1400
BUB20-48S0
3.3
0
4000
12
351
82
58000
BUB20-48S1
5
0
4000
15
513
85
23280
BUB20-48S2
12
0
1670
16
487
90
4584
15
33
1340
15
484
90
2824
BUB20-48D1
±5
0
±2000
14
501
87
11760
BUB20-48D2
±12
0
±835
15
485
90
1600
BUB20-48D3
±15
0
±670
15
484
90
960
BUB20-12S2
BUB20-12S3
BUB20-24S3
BUB20-48S3
9~18V
Nominal:12V
18~36V
Nominal:24V
36~75V
Nominal:48VDC
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Rev:20130814 A
Page 1 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
Input Specifications
Input Voltage
12V nominal input
9-18V
24V nominal input
18-36V
48V nominal input
36-75V
Input filter
Pi Type
Input surge voltage
12V nominal input
25V
(100ms max.)
24V nominal input
50V
48V nominal input
100V
Input reflected ripple current
Nominal Vin and full load
Start up time
Nominal Vin and constant resistive load
Remote ON/OFF
60mAp-p max.
76ms 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
<10mA
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
Output Specifications
20 Watts max.
Output power
Voltage accuracy
Full load and nominal Vin
±1%
See table
Minimum load
Line regulation
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
±1%
Single
±0.5%
Dual
±0.5%
Unbalanced load 25% to 100% full load
Ripple and Noise
±5%
20MHz bandwidth
80mVp-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
150% typ.
Hiccup, automatic recovery
Short circuit protection
Transient response settling time
50% load step change
1200uS max.
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
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Rev:20130814 A
Page 2 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
General Specifications
Efficiency
Nominal input
See table
Isolation voltage
Input to output
1500VDC
Isolation resistance
500VDC
9
10 Ohms min.
Isolation capacitance
1100pF typ.
Switching frequency
330kHz typ.
6
Reliability, calculated MTBF
1.58×10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Silicon rubber (UL94V-0)
Potting material
2.0 × 1.0 × 0.4 Inch
Dimensions
(50.8 × 25.4 × 10.2 mm)
Weight
32.0g (1.13oz) typ.
BUB20 Series
Output Power (%)
Power Derating Curve(5)
Ambient Temp.TA (℃)
BUB20-48S1
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
BUB20-48S1
Input voltage vs. Efficiency
Input voltage (V)
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Output Current (A)
Rev:20130814 A
Page 3 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
BUB20-48S1
BUB20-48S1
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).
5. Based on BUB20-48S1.
Mechanical Dimensions
Pin
1
2
3
4
5
6
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
+Vout
+Vout
Trim
Common
-Vout
-Vout
Remote On/Off Remote On/Off
(optional)
(optional)
Unit: mm [inch]
Tolerance:±0.5[0.02]
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Rev:20130814 A
Page 4 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
Specifications subject to change without noticed.
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:20130814 A
Page 5 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 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=
Δ Vout
Δ Vin
Δ Vout = 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 :
│ x100%
│Vout(FL)-Vout(NL)│
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:20130814 A
Page 6 of 7
Isolated DC-DC Converters
BUB20 Series -- 20 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:20130814 A
Page 7 of 7
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