BUB20 [BOTHHAND]
Isolated DC-DC Converters;
| 型号： | BUB20 |
| 厂家： | 
BOTHHAND USA, LP. |
| 描述： | Isolated DC-DC Converters |
| 文件： | 总7页 (文件大小：839K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
Features
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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.
Designed with highly efficiency, allow the operating temperature
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 :
1 input voltage range, remote on/off control, short-circuit
protection and over voltage protection.
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Over Voltage Protection: Clamp Mode
Shielded Metal Case with Insulated Baseplate
Lead Free Design, RoHS Compliant
6 pin DIP Package with Industry-Standard Footprint
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 All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
Voltage
(V)
Capacitive
Load, max. (3)
(uF)
Eff .(2)
(%)
Output Current (mA)
Min. Load(1)
Input Current (mA)
Input Voltage
Range
Model
Number
Full. Load
No Load
Full Load
BUB20-12S0
BUB20-12S1
BUB20-12S2
BUB20-12S3
BUB20-12D1
BUB20-12D2
BUB20-12D3
BUB20-24S0
BUB20-24S1
BUB20-24S2
BUB20-24S3
BUB20-24D1
BUB20-24D2
BUB20-24D3
BUB20-48S0
BUB20-48S1
BUB20-48S2
BUB20-48S3
BUB20-48D1
BUB20-48D2
BUB20-48D3
3.3
5
0
0
4000
4000
1670
1340
2000
835
61
92
94
90
85
92
90
26
33
33
31
31
34
31
12
15
16
15
14
15
15
1418
2083
1998
1982
2064
1988
1984
693
82
84
88
89
85
88
88
83
86
90
91
87
90
91
82
85
90
90
87
90
90
28000
26000
4900
2960
12000
2020
880
12
15
5
28
24
0
9~18V
Nominal:12V
12
15
3.3
5
0
8
670
0
4000
4000
1670
1340
2000
835
36560
19760
4600
2900
13000
2300
1400
58000
23280
4584
2824
11760
1600
960
0
1019
971
12
15
5
0
18~36V
Nominal:24V
33
0
968
1004
968
12
15
3.3
5
0
0
670
964
0
4000
4000
1670
1340
2000
835
351
0
513
12
15
5
0
487
36~75V
Nominal:48VDC
33
0
484
501
12
15
0
485
0
670
484
Rev:20130814 A
Page 1 of 7
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Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
Input Specifications
12V nominal input
24V nominal input
48V nominal input
9-18V
Input Voltage
18-36V
36-75V
Pi Type
25V
Input filter
Input surge voltage
(100ms max.)
12V nominal input
24V nominal input
48V nominal input
Nominal Vin and full load
50V
100V
Input reflected ripple current
Start up time
60mAp-p max.
Nominal Vin and constant resistive load
Converter: ON
76ms typ.
Open or 3.5V＜Vr＜12V
Short (4) or 0V＜Vr＜1.2V
＜0.2 mA
Remote ON/OFF
Converter: OFF
Sourcing current of remote control pin
Nominal Vin
＜10mA
Idle input current (at Remote OFF state) Nominal Vin
Environmental Specifications
Operating ambient temperature
Maximum case temperature
-40°C to +85°C (with derating)
+100°C
Storage temperature range
Relative humidity
-55°C to +105°C
5% to 95% RH
Temperature coefficient
0.02% / °C max.
Output Specifications
Output power
20 Watts max.
Voltage accuracy
Minimum load
Line regulation
Full load and nominal Vin
1%
See table
LL to HL at full load
25% load to full load
Balanced load
1%
Single
Dual
0.5%
Load Regulation
Ripple and Noise
0.5%
Unbalanced load 25% to 100% full load
20MHz bandwidth
3.3Vout models
5%
80mVp-p max.
3.9V
Over voltage protection
(Zener Diode Clamp)
5Vout models
6.2V
12Vout models
15V
18V
15Vout models
Capacitive load
See table
Over load protection
% of full load at nominal input
150% typ.
Short circuit protection
Transient response settling time
Transient response over shoot
Hiccup, automatic recovery
1200uS max.
50% load step change
di/dt=0.8A/ꢀs
≤
5% of Vo
Rev:20130814 A
Page 2 of 7
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Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
General Specifications
Efficiency
Nominal input
Input to output
500VDC
See table
1500VDC
Isolation voltage
10 9 Ohms min.
1100pF typ.
Isolation resistance
Isolation capacitance
Switching frequency
Reliability, calculated MTBF
330kHz typ.
1.58×10 6 Hrs
Physical Specifications
Case material
Nickel-coated copper
Non-conductive black plastic
Silicon rubber (UL94V-0)
2.0 × 1.0 × 0.4 Inch
Base material
Potting material
Dimensions
Weight
(50.8 × 25.4 × 10.2 mm)
32.0g (1.13oz) typ.
BUB20 Series
Power Derating Curve(5)
Ambient Temp.TA (℃)
BUB20-48S1
Input voltage vs. Efficiency
BUB20-48S1
Output Current 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 Assignment
Pin
1
Single
+Vin
Dual
+Vin
2
-Vin
-Vin
3
+Vout
Trim
+Vout
Common
-Vout
4
5
-Vout
Remote On/Off Remote On/Off
(optional)
6
(optional)
Unit: mm [inch]
Tolerance:±0.5[0.02]
Rev:20130814 A
Page 4 of 7
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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
Load
V
V
◎DC Power Supply: It offers a wide voltage and current range precisely.
◎Current meter (A): Accuracyꢁ 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A 2 ranges+(0.3% rdg + 2 digits).
◎Voltage meter (V): Accuracyꢁ +(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
12V nominal input
24V nominal input
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4.5~5.5V
10.8~13.2V
21.6~26.4V
Wide input voltage range 2:1
5V nominal input
12V nominal input
24V nominal input
48V nominal input
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4.5~9V
9~18V
18~36V
36~75V
Wide input voltage range 4:1 (W)
24V nominal input
48V nominal input
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9~36V
18~75V
2. Input power :
Pin = Vin x Iin
Vin：Input voltage
Iin：Input current
3. Output power :
Pout = Vout x Iout
Vout：Output voltage
Iout：Output current
4. Efficiency :
Pout
Pin
x100%
Efficiency =
Pout: Output power
Pin: Input power
5. Voltage accuracy:
x100%
│Vout-Vout(nominal)│
Vout
Vout：Output voltage
Vout(nominal)：Nominal output voltage
Rev:20130814 A
Page 5 of 7
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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.
ΔVout
Line regulation=
ΔVin
ΔVout = 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 :
│Vout(FL)-Vout(NL)│ x100%
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
Rev:20130814 A
Page 6 of 7
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Isolated DC-DC Converters
BUB20 Series -- 20 Watt
Bothhand USA
Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
Co
Oscilloscope
Load
converter
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
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.
Rev:20130814 A
Page 7 of 7
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