PRELIMINARY Isolated DC-DC Converters BYB100-48S5 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 Applications Fixed Switching Frequency Distributed power system Input/ Output Isolation 1500VDC Telecommunication application Lead Free Design, RoHS Compliant Battery powered equipment Industry Standard Pinout Industrial application Adjustable Output Voltage Process control equipment Transportation equipment Input Specifications Input voltage range 36~75V Under voltage shutdown Full Load 33V (typical) Input current Vin=48V and no Load 90mA (typical) Input current Vin=48V and full Load 2367mA (typical) Input current Vin=48V and output shorted 10mA (typical) 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 24V Vout=23.76 ~ 24.24V ±1% Maximum Load 4.2A Minimum Load 0A Maximum capacitive load 1750uF (maximum) Efficiency Vin=48V and full load 92% (typical) Ripple / Noise 20MHz bandwidth. 200mVp-p (maximum) ±0.02%/℃ (maximum) Temperature coefficient Output short circuit protection Automatic recovery Output over voltage protection [email protected] Hiccup, Continuous 27V (typical) www.bothhandusa.com Rev:20120906A Page 1 of 3 PRELIMINARY Isolated DC-DC Converters BYB100-48S5 Bothhand USA Line regulation LL to HL at full load ±0.5% (maximum) Load regulation 25% load to full load ±0.5% (maximum) Transient response over shoot di/dt=0.8A/µs ≤ ±5% of Vo Transient response settling time 50% load step change 240µs (typical) Start-up time Nominal Vin and full load 70msec (typical) Dynamic Characteristics Switching frequency 300kHz (typical). General Specifications 4 ≧8.8×10 hours Reliability, calculated MTBF Operating ambient temperature -40℃~+85℃ With derating 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 15000VDC 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 Lead-free wave soldering 260℃/10Sec (maximum) Note 1. Typical value, tested at nominal input and full load. 2. Short to -Vin (Pin 2). Power Derating Curve 120 100 80 60 40 20 0 -40 -20 0 20 40 50 60 80 100 120 Ambient Temp.TA (℃ ℃) [email protected] www.bothhandusa.com Rev:20120906A Page 2 of 3 PRELIMINARY Isolated DC-DC Converters BYB100-48S5 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] [email protected] www.bothhandusa.com Rev:20120906A Page 3 of 3 PRELIMINARY Isolated DC-DC Converters BYB100-48S5 Bothhand USA 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 [email protected] www.bothhandusa.com RCL2 Rev:20120906A Page 4 of 3