page 1 of 4 date 03/2008 DESCRIPTION: half brick dc-dc converter PART NUMBER: VHB50W Series Features ·25-50W isolated output ·Efficiency to 84% ·300KHz switching frequency ·4:1 input range ·Regulated outputs ·Continuous short circuit protection ·Five-sided metal case ·Industry standard half-brick package Model Number VHB50W-Q24-S3R3 VHB50W-Q24-S5 VHB50W-Q24-S12 VHB50W-Q24-S15 VHB50W-Q24-S24 VHB50W-Q24-S481 VHB50W-Q48-S3R3 VHB50W-Q48-S5 VHB50W-Q48-S12 VHB50W-Q48-S15 VHB50W-Q48-S24 Input Voltage 9-36VDC 9-36VDC 9-36VDC 9-36VDC 9-36VDC 9-36VDC 18-75VDC 18-75VDC 18-75VDC 18-75VDC 18-75VDC Output Voltage 3.3VDC 5VDC 12VDC 15VDC 24VDC 48VDC 3.3VDC 5VDC 12VDC 15VDC 24VDC Output Current 10A 10A 4.16A 3.33A 2.08A 1.04A 10A 10A 4.16A 3.33A 2.08A Input Current No Load Full Load 50mA 1785mA 50mA 2570mA 50mA 2510mA 50mA 2510mA 50mA 2510mA 50mA 2510mA 50mA 880mA 50mA 1270mA 50mA 1240mA 50mA 1240mA 50mA 1240mA 1. VHB50W-Q24-S48 is not UL approved. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 Efficiency 77% 81% 83% 83% 83% 83% 78% 82% 84% 84% 84% PART NUMBER: VHB50W Series page 2 of 4 date 03/2008 DESCRIPTION: half brick dc-dc converter Input Input Voltage Range Under Voltage Lockout Positive Logic Remote ON/OFF 3,4 Input Filter 24V 48V 12Vin power up 12Vin power down 48Vin power up 9-36V 18-75V 8.8V 8V 17V 48Vin power down 16V PI Type Output Voltage Accuracy Transient Response: 25% Step Load Change External Trim Adj. Range Ripple & Noise 20MHz BW, 3.3V, 5V 12V& 15V 24V Temperature Coefficient Short Circuit Protection Safety Line Regulation 1 Load Regulation 2 Over Voltage Protection trip Range, % Vo nom. Current Limit ±1% max. <500μ sec. ±10% 40mV RMS., max 100mV pk-pk, max 60mV RMS., max 150mV pk-pk, max 100mV RMS., max 240mV pk-pk, max. ±0.03%/°C Continuous approved to UL60950-1 (E222736) ±0.2% max ±0.2% max 115-140% 110-160% Nominal Output General Specifications Efficiency Isolation Voltage Input/Output Input/Case Output/Case see table 1500VDC min. 1500VDC min. 1500VDC min. Isolation Resistance 10 7 Ohm min. Switching Frequency 300KHz, Typ. Operating Case Temperature -40°C to 100°C Storage Temperature -55°C to 105°C Thermal Shutdown, Case Temp. Dimensions 100°C Typ. 2.28x2.40x0.50 inches 57.9x61.0x12.7mm Case Material aluminum NOTES: 1. Measured from High Line to Low Line 2. Measured from Full Load to Zero Load 3. Logic Compatibility: Open Collector ref to -Input Module ON: Open Circuit Module OFF: < 0.8VDC 4. Suffix “N” to the model number with negative logic remote ON/OFF. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 PART NUMBER: VHB50W Series page 3 of 4 date 03/2008 DESCRIPTION: half brick dc-dc converter Application Notes Derating: The operating case temperature range of the VHB50 series is -40°C to +100°C. When operating the VHB50, proper derating or cooling is needed. Following is the derating curve of VHB50 without heat sink. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 PART NUMBER: VHB50W Series page 4 of 4 date 03/2008 DESCRIPTION: half brick dc-dc converter Remote ON/OFF Control The VHB50 series allows the user to switch the module on and off electronically with the remote on/off feature. The VHB50 series is available with “positive logic” or “negative logic” options. External Output Trimming Output may optionally be externally trimmed (±10%) with a fixed resistor or an external trimpot as shown. Output Noise The output noise is measured with a 10μF tantalum capacitor and a 1.0μF ceramic capacitor across the output. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382