Isolated DC-DC Converters BVA25 Series -- 25 /30Watt Bothhand USA Features Wide 2 : 1 Input Voltage Range(9~18V,18~36V,36~75V) High Efficiency up to 92% Remote On/Off Input / Output Isolation Voltage: 1.5K VDC Extended Operating Temperature Range: -40°C to +85°C Output Short Circuit Protection: Description Hiccup, continuous & Auto Recovery Over Voltage Protection: Clamp Mode Over Temperature Protection Shielded Metal Case with Insulated Baseplate Lead Free Design, RoHS Compliant The BVA25 Series are isolated 25W DC/DC converters. Designed with highly efficiency, allow the operating temperature range of these units to be -40°C to +85°C in a 50.8×40.6×10.2mm shielded metal case. Further features include wide 2 : 1 input voltage range, remote on/off control, short-circuit protection , over voltage protection and over temperature protection. Industry Standard Pinout Applications Adjustable Output Voltage Customer Design Available Safety Standard / Approval : IEC / EN 60950-1 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 Model Number Input Voltage Range All specifications are typical at nominal input, full load and 25°C unless otherwise stated. Output (2) Capacitive Output Current (mA) Input Current (mA) Eff . Voltage max. (%) Load, (3) Min. Load (1) Full. Load No Load Full Load (V) (uF) BVA25-12S0 3.3 16 5500 49 1939 82 39000 BVA25-12S1 5 0 5000 58 2604 84 22000 12 10 2500 23 2976 88 5600 15 15 2000 24 2976 88 3900 BVA25-12D2 ±12 ±2 ±1250 36 2976 88 2800 BVA25-12D3 BVA25-24S0 ±15 ±25 ±1000 39 2941 89 1200 3.3 0 5500 52 945 84 39000 BVA25-24S1 5 0 5000 61 1255 87 22000 12 14 2500 15 1437 91 5600 15 5 2000 64 1437 91 3900 BVA25-24D2 ±12 0 ±1250 72 1437 91 2800 BVA25-24D3 ±15 0 ±1000 68 1437 91 1200 BVA25-48S0 BVA25-48S1 3.3 0 5500 15 473 84 39000 5 0 5000 23 628 87 22000 12 0 2500 18 718 91 5600 BVA25-12S2 BVA25-12S3 BVA25-24S2 BVA25-24S3 BVA25-48S2 BVA25-48S3 9~18V Nominal:12V 18~36V Nominal:24V 36~75V Nominal:48V 15 0 2000 19 718 91 3900 BVA25-48D2 ±12 0 ±1250 20 718 91 2800 BVA25-48D3 ±15 0 ±1000 16 710 92 1200 [email protected] www.bothhandusa.com Rev:20130814A Page 1 of 7 Isolated DC-DC Converters BVA25 Series -- 25 /30Watt Bothhand USA Input Specifications Input voltage 12V nominal input 9-18V 24V nominal input 18-36V 48V nominal input 36-75V Input filter Pi type 12V input 25V Input surge voltage 24V input 50V (100ms max.) 48V input 100V Input reflected ripple current Nominal Vin and full load Start up time Nominal Vin and constant resistive load Remote ON/OFF 68mAp-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 ＜12 mA Environmental Specifications -40°C to +85°C (with derating) Operating ambient temperature +100°C Maximum case temperature -55°C to +105°C Storage temperature range 95% RH max. Relative humidity ±0.02% / °C max. Temperature coefficient Output Specifications 30 Watts max. Output power Voltage accuracy Full load and nominal Vin ±1% See table Minimum load Line regulation LL to HL at full load 25% load to full load Load Regulation Balanced load ±1% Single ±1% Dual ±1% Unbalanced load 25% to 100% full load Ripple and Noise ±3% 20MHz bandwidth 85mVp-p max. 3.3Vout models 3.9V Over voltage protection 5Vout 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 150% typ. 115°C typ. Thermal shutdown Short circuit protection [email protected] Hiccup, continuous(Auto Recovery) www.bothhandusa.com Rev:20130814A Page 2 of 7 Isolated DC-DC Converters BVA25 Series -- 25 /30Watt Bothhand USA 50% load step change Transient response settling time 360µs typ. (2.6ms for 3.3Vout) Transient response over shoot di/dt=0.8A/µs ≤ ±5% of Vo Efficiency Nominal input See table Isolation voltage Input to output General Specifications Isolation resistance 1500VDC 9 500VDC 10 Ohms min. Isolation capacitance 1200pF typ. Switching frequency 300kHz typ. 6 Reliability, calculated MTBF 1.28 × 10 Hrs Physical Specifications Case material Nickel-coated copper Base material Non-conductive black plastic Silicon rubber (UL94 V-0) Potting material 2.00 × 1.60 × 0.40 Inch Dimensions (50.8 × 40.6 × 10.2 mm) Weight 48g (1.69oz) typ. BVA25 Series (5) Output Power (%) Power Derating Curve Ambient Temp.TA (℃) BVA25-48S1 Output Current vs. Efficiency Efficiency (%) Efficiency (%) BVA25-48S1 Input voltage vs. Efficiency Input voltage (V) [email protected] www.bothhandusa.com Output Current (A) Rev:20130814A Page 3 of 7 Bothhand USA Isolated DC-DC Converters BVA25 Series -- 25 /30Watt BVA25-48S1 BVA25-48S1 Transient Response at 50%~100% Max Load Loop Gain & Phase at Vi=48V,Full Load 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 BVA25-48S1. Mechanical Dimensions Pin 1 2 3 4 5 6 7 Pin Assignment Single Dual +Vin +Vin -Vin -Vin Remote On/Off Remote On/Off No pin +Vout -Vout Trim +Vout Common -Vout Trim Unit: mm [inch] Tolerance:±0.5[0.02] Specifications subject to change without notice. [email protected] www.bothhandusa.com Rev:20130814A Page 4 of 7 Isolated DC-DC Converters BVA25 Series -- 25 /30Watt Bothhand USA Test Configurations All specifications are typical at nominal input, full load and 25°C unless otherwise stated. A A DC Power Supply DC/DC converter V V Load ◎DC Power Supply: It offers a wide voltage and current range precisely. ◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits) 2000mA ~ 20A 2 ranges+(0.3% rdg + 2 digits). ◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits). ◎Load: At full load. ◎Wires: The resistance of the wires must be small. 1. Input voltage range: Narrow input voltage range（±10%）、wide input voltage range (2:1 and 4:1）。 EX: Narrow input voltage range（±10%） 5V nominal input 4.5~5.5V 12V nominal input 10.8~13.2V 24V nominal input 21.6~26.4V Wide input voltage range 2:1 5V nominal input 12V nominal input 24V nominal input 48V nominal input 4.5~9V 9~18V 18~36V 36~75V Wide input voltage range 4:1 (W) 24V nominal input 9~36V 48V nominal input 18~75V 2. Input power : Pin = Vin x Iin Vin：Input voltage Iin：Input current Pout = Vout x Iout Vout：Output voltage Iout：Output current 3. Output power : 4. Efficiency : Efficiency = Pout Pin x100% Pout: Output power Pin: Input power 5. Voltage accuracy: │ │Vout-Vout(nominal)│ Vout [email protected] x100% Vout：Output voltage Vout(nominal)：Nominal output voltage www.bothhandusa.com Rev:20130814A Page 5 of 7 Isolated DC-DC Converters BVA25 Series -- 25 /30Watt ││││ ││││ Bothhand USA 6. Line regulation: (1) Wide input voltage range and regulated output voltage series. │ │Vout(LL)-Vout(HL)│ Vout(LL) LL: Low Line input voltage HL: High Line input voltage x100% (2) Narrow input voltage range（±10%）and unregulated output voltage series. Δ Vout Line regulation= Δ Vin ΔVout = Vout(+10%)-Vout(-10%) x100% Vout Vout(+10%)：Output voltage at Vin = 1.1xVin(nominal)&full load Vout(-10%)：Output voltage at Vin = 0.9xVin(nominal)&full load Vout：Output voltage at Vin = Vin(nominal)&full load ΔVin = Vin(+10%)-Vin(-10%) x100% Vin(nominal) Vin(+10%)：Input voltage = 1.1xVin(nominal) Vin(-10%)：Input voltage = 0.9xVin(nominal) Vin(nominal)：Nominal Input voltage 7. Load regulation : │ x100% │Vout(FL)-Vout(NL)│ Vout(FL) Vout(FL): Output voltage at full load Vout(NL): Output voltage at 25% full load or 10% full load 8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz. Ripple&Noise Noise Ripple [email protected] www.bothhandusa.com Rev:20130814A Page 6 of 7 Isolated DC-DC Converters BVA25 Series -- 25 /30Watt Bothhand USA Output Ripple&Noise measurement test circuit: as shown below. Copper strip DC/DC converter Co Oscilloscope Load Copper strip Co: usually 0.47uF. 9. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is Output Power (%) drawn from the output and the device is already running. The temperature derating curve shows the operating power-temperature range. As shown below. Ambient Temp.TA (℃) 10. Switching frequency: The nominal operating frequency of the DC-DC converters. 11. Input to output isolation: The dielectric breakdown strength test between input and output circuits. This is the isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute. [email protected] www.bothhandusa.com Rev:20130814A Page 7 of 7