BYB100-48S2 20120801

PRELIMINARY
Isolated DC-DC Converters
BYB100-48S2
Bothhand USA
Features
Wide 2 : 1 Input Voltage Range
High Power Density
High Efficiency
Operating Temperature Range: -40°C to +85°C
(with derating)
Output Short Circuit Protection:
Hiccup, continuous & Auto Recovery
Output Over Voltage Protection
Over Temperature Protection
Fixed Switching Frequency
Input/ Output Isolation 1500VDC
Lead Free Design, RoHS Compliant
Industry Standard Pinout
Adjustable Output Voltage
Applications
Distributed power system
Telecommunication application
Battery powered equipment
Industrial application
Process control equipment
Transportation equipment
Input Specifications
Input voltage range
36~75V
Converter: ON
Open or 3.5V<Vr<12V
Converter: OFF
Short(2) or 0V<Vr<1.2V
Sourcing current of remote control pin
Nominal Vin
<0.2mA
Idle input current (at Remote OFF state)
Nominal Vin
<20mA
Remote ON/OFF
Output Specifications
Output voltage
Output voltage accuracy
12V
Vout=11.88 ~ 12.12V
±1%
Maximum Load
8.33A
Minimum Load
0A
Maximum capacitive load
Efficiency
Vin=48V and full load
Ripple / Noise
20MHz bandwidth.
±0.02%/℃ (maximum)
Temperature coefficient
Output short circuit protection
100mVp-p (maximum)
Automatic recovery
Output over voltage protection
Hiccup, Continuous
15V (typical)
General Specifications
Reliability, calculated MTBF
Operating ambient temperature
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With derating
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-40℃~+85℃
Rev:20120801A
Page 1 of 3
PRELIMINARY
Isolated DC-DC Converters
BYB100-48S2
Bothhand USA
Maximum case surface temperature
105℃
Thermal shutdown
110°C typ.
Storage temperature range
-55℃~+125 ℃
Relative humidity
95% RH (maximum)
Isolation voltage
Input to output
1500VDC
Isolation capacitance
Input to output
1200pF (typical)
Isolation resistance
Input to output (500VDC)
10 Ω (minimum)
Cooling
Natural convection
9
Physical Specifications
Case material
Aluminum
Potting material
Silicon rubber (UL94V-0)
2.40 × 2.28 × 0.5 Inch
Dimensions
(61.0 × 57.9 × 12.7 mm)
Weight
97g (3.42oz) (typical)
Soldering temperature
260℃/10Sec (maximum)
Lead-free wave soldering
Note
1. Typical value, tested at nominal input and full load.
2. Short to -Vin (Pin 2).
Remote Sense Application circuit
The Remote Sense function is used to compensate for the voltage drop incurred when the load is located physically
far away from the DC/DC converter providing its power. The Remote Sense pins are connected as close to the load as
possible. The DC/DC converter’s regulation specification is maintained across the points where the Remote Sense wires
are connected at the load. This will remove the effect of the voltage drop caused by the resistance of the wires used to
conduct the power from the DC/DC converter to the load. This is represented by RCL1 and RCL2. With the use of Remote
Sense, the effects of RCL1 and RCL2 are eliminated.
If the Remote Sense function is not used, the +Sense has to be connected to +Vout and the –Sense has to be
connected to –Vout as close to the DC/DC converter as possible.
RCL1
+Vout
+Vin
+Sense
Load
-Vin
-Sense
-Vout
RCL1 and RCL2 are line resisters
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RCL2
Rev:20120801A
Page 2 of 3
PRELIMINARY
Isolated DC-DC Converters
BYB100-48S2
Bothhand USA
Mechanical Dimensions
Pin Assignment
Pin
Single
1
-Vin
2
Case
Remote On/Off
3
4
+Vin
5
-Vout
6
-Sense
7
Trim
8
+Sense
9
+Vout
4-M3x0.5
(Through hole)
1
2
5
Bottom view
6
7
3
8
4
9
Pin 5&9 diameter: 2.0 [0.08]
Other pins diameter: 1.0 [0.04]
Unit: mm [inch]
Tolerance: ±0.5 [0.02]
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Rev:20120801A
Page 3 of 3