bub20w series

BOTHHAND USA
Isolated DC-DC Converters
BUB20W Series -- 20 Watt
Features
Wide 4 : 1 Input Voltage Range(9~36V,18~75V)
High Efficiency up to 90%
Remote On/Off
Input / Output Isolation Voltage: 1.5K Vdc
Extended Operating Temperature Range: -40°C to+85°C
Output Short Circuit Protection:
Hiccup, continuous & Auto Recovery
Over Voltage Protection: Clamp Mode
Description
Shielded Metal Case with Insulated Baseplate
The BUB20W 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 (with
6 pin DIP Package with Industry-Standard Footprint
derating) in a 6 pin DIP package with industry-standard
Standard 2”X1” Package
footprint. Further features include wide 4 : 1 input voltage
range, remote on/off control, trimmable output, short-circuit
Customer Design Available
protection and over voltage protection.
Lead Free Design, RoHS Compliant
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.
Output
Voltage
(Vdc)
Min. Load (1)
Full. Load
No Load
Full Load
BUB20-24S0W
3.3
0
5500
42
937
85
19760
BUB20-24S1W
5.0
0
4000
67
997
88
16000
BUB20-24S2W
12
53
1670
23
1005
87
3360
15
18
1330
23
996
87
2080
±5
0
±2000
66
998
88
9760
BUB20-24D2W
±12
33
±835
25
990
88
1760
BUB20-24D3W
±15
33
±665
29
996
88
880
BUB20-48S0W
3.3
0
5500
17
469
85
19760
BUB20-48S1W
5.0
0
4000
31
498
88
16000
BUB20-48S2W
12
53
1670
8
491
89
3360
15
18
1330
8
486
89
2080
±5
0
±2000
28
489
89
9760
BUB20-48D2W
±12
28
±835
9
487
90
1760
BUB20-48D3W
±15
33
±665
11
486
89
880
Model
Number
Input Voltage
Range
9~36V
BUB20-24S3W Nominal:24VDC
BUB20-24D1W
18~75V
BUB20-48S3W Nominal:48VDC
BUB20-48D1W
Output Current (mA)
Input Current (mA)
[email protected]
Capacitive
Eff .(2)
Load, max. (3)
(%)
(uF)
BOTHHAND USA
Isolated DC-DC Converters
BUB20W Series -- 20 Watt
Input Specifications
Input Voltage
24V nominal input
9-36Vdc
48V nominal input
18-75Vdc
Input filter
Pi Type
Input surge voltage
24V nominal input
50Vdc
(100ms max.)
48V nominal input
100Vdc
Input reflected ripple current
Nominal Vin and full load
Start up time
Nominal Vin and constant resistive load
60mAp-p max.
Open or 3.5V<Vr<12V
Converter: ON
Remote ON/OFF
76ms typ.
Short
Converter: OFF
(4)
or 0V<Vr<0.7V
Sourcing current of remote control pin
Nominal Vin
<0.2 mA
Idle input current (at Remote OFF state)
Nominal Vin
<12 mA
Environmental Specifications
Operating ambient temperature
-40°C to +85°C (with derating)
Maximum case temperature
+105°C max.
Storage temperature range
-55°C to +125°C
Relative humidity
95% RH max.
Temperature coefficient
±0.02% / °C max.
Output Specifications
Output power
Voltage accuracy
20 Watts max.
Full load and nominal Vin
±1%
Minimum load
Line regulation
See table
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
±1.0%
Single
±1.0%
Dual
±0.5%
Unbalanced load 25% to 100% full load
Ripple and Noise
20MHz bandwidth
±5%
80mVp-p max.
3.3Vout models
3.9V
Over voltage protection
5.1Vout 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
110% min.
Hiccup, continuous (Auto Recovery)
50% load step change
700µs max.
(1.4ms for 3.3Vout)
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
(≤ ±6% for 3.3Vout)
[email protected]
BOTHHAND USA
Isolated DC-DC Converters
BUB20W Series -- 20 Watt
General Specifications
Efficiency
Nominal input
Isolation voltage
Input to output
Isolation resistance
See table
1500Vdc
9
500Vdc
10 Ohms min.
Isolation capacitance
1050pF typ.
Switching frequency
330kHz typ.
6
Reliability, calculated MTBF
1.35 × 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Potting material
Silicon rubber (UL94V-0)
2.0 × 1.0 × 0.4 Inch
Dimensions
(50.8 × 25.4 × 10.2 mm)
Weight
32.0g (1.13oz) typ.
BUB20W Series
Power Derating Curve(5)
120
Output Power (%)
100
80
60
Natural convection with heatsink
Natural convection without heatsink
40
20
0
-40
-20
0
20
40
60
71 78
80
105
100
120
Ambient Temp.TA (℃
℃)
BUB20-48S1W
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
BUB20-48S1W
Input voltage vs. Efficiency
Input voltage (V)
[email protected]
Output Current (A)
BOTHHAND USA
Isolated DC-DC Converters
BUB20W Series -- 20 Watt
BUB20-48S1W
Transient Response at 50%~100% Max Load
BUB20-48S1W
Loop Gain & Phase at Vi=48V,Full Loa
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 BUB20-48S1W.
Mechanical Dimensions
Pin
1
2
3
4
5
6
Unit: mm [inch]
Tolerance:±0.5[0.02]
Specifications subject to change without noticed.
[email protected]
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
+Vout
+Vout
Trim
Common
-Vout
-Vout
Remote On/Off
(optional)
BOTHHAND USA
Isolated DC-DC Converters
BUB20W Series -- 20 Watt
Heat-sink (Option)
Material:
Aluminum
Weight:
10g (0.35oz)
Note:
The product label on converter has to be
removed before mounting the heat-sink.
For volume orders, converters will be supplied
with heat-sink already mounted. Please contact
factory for quotation.
Separate heat-sinks are only available for
prototypes and small quantity orders.
Specifications subject to change without notice.
[email protected]