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]