Isolated DC-DC Converters BUC20W Series -- 20 Watt BOTHHAND USA 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 BUC20W 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, over voltage protection and over temperature 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 BUC20-24S0W 3.3 0 5500 70 945 84 33000 BUC20-24S1W 5.1 0 4000 86 1012 88 18000 BUC20-24S2W 12 150 1670 38 1006 87 3300 15 80 1330 49 990 88 2200 ±5 0 ±2000 91 992 88 8200 BUC20-24D2W ±12 25 ±835 45 1006 87 1000 BUC20-24D3W ±15 0 ±665 95 1002 87 900 BUC20-48S0W 3.3 0 5500 25 461 86 33000 BUC20-48S1W 5.1 0 4000 38 500 89 18000 BUC20-48S2W 12 90 1670 40 491 89 3300 15 55 1330 37 489 89 2200 ±5 0 ±2000 39 484 90 8200 BUC20-48D2W ±12 10 ±835 42 491 89 1000 BUC20-48D3W ±15 0 ±665 43 495 88 900 Model Number Input Voltage Range 9~36V BUC20-24S3W Nominal:24VDC BUC20-24D1W 18~75V BUC20-48S3W Nominal:48VDC BUC20-48D1W E-mail: [email protected] Output Current (mA) http://www.bothhandUSA.com Input Current (mA) Rev:20100928A Capacitive Eff .(2) Load, max. (3) (%) (uF) Page 1 of 4 Isolated DC-DC Converters BUC20W Series -- 20 Watt BOTHHAND USA 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 Remote ON/OFF 100mAp-p typ. 80ms typ. Open or 3.5V＜Vr＜12V Converter: ON 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 ＜15 mA Environmental Specifications Operating ambient temperature -40°C to +85°C (with derating) Maximum case temperature +100°C Storage temperature range -55°C to +105°C Relative humidity 95% RH max. Temperature coefficient ±0.02% / °C max. Output Specifications Output power Voltage accuracy 20.4 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 ±0.5% Single ±0.5% Dual ±0.5% Balanced load Unbalanced load 25% to 100% full load Ripple and Noise ±3% 20MHz bandwidth 85mVp-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 300µs typ. (1.8ms for 3.3Vout) Transient response over shoot di/dt=0.8A/µs ≤ ±5% of Vo (≤ ±8% for 3.3Vout) E-mail: [email protected] http://www.bothhandUSA.com Rev:20100928A Page 2 of 4 Isolated DC-DC Converters BUC20W Series -- 20 Watt BOTHHAND USA General Specifications Efficiency Nominal input Isolation voltage Input to output Isolation resistance See table 1500Vdc 9 500Vdc 10 Ohms min. Isolation capacitance 1200pF typ. Switching frequency 300kHz typ. 6 Reliability, calculated MTBF 1.06 × 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) 32.0g (1.13oz) typ. Weight BUC20W Series Power Derating Curve(5) 120 Output Power (%) 100 80 70 60 40 20 0 -40 -20 0 20 40 60 70 80 105 120 ℃) Ambient Temp.TA (℃ BUC20W-48S1 Output Current vs. Efficiency Efficiency (%) Efficiency (%) BUC20W-48S1 Input voltage vs. Efficiency Input voltage (V) E-mail: [email protected] http://www.bothhandUSA.com Output Current (A) Rev:20100928A Page 3 of 4 Isolated DC-DC Converters BUC20W Series -- 20 Watt BOTHHAND USA BUC20W-48S1 BUC20W-48S1 Transient Response at 50%~100% Max Load 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 BUC20-48S1W. Mechanical Dimensions Pin 1 2 3 4 5 6 Pin Assignment Single Dual +Vin +Vin -Vin -Vin Remote On/Off +Vout -Vout Trim +Vout Common -Vout Unit: mm [inch] Tolerance:±0.5[0.02] Specifications subject to change without noticed. E-mail: [email protected] http://www.bothhandUSA.com Rev:20100928A Page 4 of 4