VHB75W CUI | Alldatasheet

Document overview

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Technical content

Features

  • 37.5W -75W isolated output
  • Efficiency to 85%
  • 300KHz switching frequency
  • 4:1 input range
  • Regulated output s
  • Continuous short circuit protection
  • Industry st andard half-brick p ack - age
  • Five-sided met al case Model Input Output Output I nput Current Number Voltage Voltage Current No Load Full Load Efficiency VHB75W-Q24-S3R3 9-36 VDC 3.3 VDC 15 A 50 mA 2611 mA 79% VHB75W-Q24-S5 9-36 VDC 5 VDC 15 A 50 mA 3811 mA 82% VHB75W-Q24-S12 9-36 VDC 12 VDC 6.25 A 50 mA 3765 mA 83% VHB75W-Q24-S15 9-36 VDC 15 VDC 5 A 50 mA 3720 mA 84% VHB75W-Q24-S24 9-36 VDC 24 VDC 3.12 A 50 mA 3720 mA 84% VHB75W-Q48-S3R3 18-75 VDC 3.3 VDC 15 A 50 mA 1320 mA 78% VHB75W-Q48-S5 18-75 VDC 5 VDC 15 A 50 mA 1905 mA 82% VHB75W-Q48-S12 18-75 VDC 12 VDC 6.25 A 50 mA 1860 mA 84% VHB75W-Q48-S15 18-75 VDC 15 VDC 5 A 50 mA 1860 mA 84% VHB75W-Q48-S24 18-75 VDC 24 VDC 3.12 A 50 mA 1860 mA 84%

Rev. 07-2007 V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 VHB75W Series Half Brick DC-DC Converter NOTES: 1. Measured from high line to low line 2. Measured from full load to zero load 3. On/Of f Control: Positive logic default. Referenced to -V in. Open collector . Module ON...open circuit Module OFF ...<0.8Vdc 4. For negative logic On/Of f control, add suf fix “N” to the model number Input Input V olt age Range 24V: 9-36V 48V: 18-75V Under V olt age Lockout 24V: power up 8.8V power down 8V 48V in: power up 17V power down 16V ON/OFF Control see notes 3&4 Input Filter PI Type Output Volt age Accuracy ±1% max. Transient Response: 25% S tep Load Change <500µ sec. External Trim Adj. Range ±10% Ripple & Noise 3.3V, 5V 40mV RMS., max 20MHz BW 100mV pk-pk., max 12V & 15V 60mV RMS., max 150mV pk-pk., max 24V 100mV RMS., max 240mV pk-pk, max. Temperature Coef ficient ±0.03%/°C Short Circuit Protection Continuous Safety approved to UL60950-1 (E222736) Line Regulation 1 ±0.2% max Load Regulation 2 ±0.2% max Over V olt age Protection trip Range, % V o nom. 115-140% Current Limit 110%-160% Nominal Output General S pecifications Efficiency see t able Isolation V olt age Input/Output 1500VDC min. Input/Case 1500VDC min. Output/Case 1500VDC min. Isolation Resist ance 107Ohm min. Switching Frequency 300KHz, Typ Operating Case Temperature -40°C to +100°C Storage Temperature -55°C to +105°C Thermal Shut down, Case Temp. 100°C Typ. Dimensions 2.28x2.40x0.50 inches (57.9x61.0x12.7mm) Case Material aluminum

Rev. 07-2007 V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 VHB75W Series Half Brick DC-DC Converter Application Notes Derating: The operating case temperature range of the VHB75 series is -40°C to +100°C. When operating the VHB75, proper derating or cooling is needed. Following is the derating curve of VHB75 without heat sink. Where: The power dissap ation (Pd) is Pd= Pi - Po = Po (1- η )/ η The thermal resist ances are listed below . The temperature rise ( D T): D T = Pd * Rca

Rev. 07-2007 V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 VHB75W Series Half Brick DC-DC Converter External Output T rimming Output may optionally be trimmed (±10%) with external fixed resistors or an external trimpot as shown. Output Noise The output noise is measured with a 10uF t ant alum cap acitor and a 1.0uF ceramic cap acitor across the output. Remote On/Off Control The VHB75 series allows the user to switch the module on and of f electronically with the remote on/of f feature. Logic control default s to “positive” logic. The diagram shows the recomment ded curcuit s for positive logic. The “negative logic” option is also available.