VHB75 CUI | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 6

Technical content

rev. page date DESCRIPTION: dc-dc converter 1 of 6 PART NUMBER: VHB75

features

  • 37.5W-75W isolated output
  • Efficiency to 85%
  • 300KHz switching frequency
  • 2:1 input range
  • Regulated outputs
  • Continuous short circuit protection
  • Industry standard half-brick package
  • Five-sided metal case
  • Safety approvals MODEL Input Output Output I nput Current Voltage Voltage Current No Load Full Load Efficiency VHB75-D12-S2R5 9-18 VDC 2.5VDC 15A 50mA 4110mA 76% vHB75-D12-S3R3 9-18 VDC 3.3VDC 15A 50mA 5290mA 78% VHB75-D12-S5 9-18 VDC 5VDC 15A 50mA 7715mA 81% VHB75-D12-S12 9-18 VDC 12VDC 6.25A 50mA 7440mA 84% VHB75-D12-S15 9-18 VDC 15VDC 5A 50mA 7440mA 84% VHB75-D12-S24 9-18 VDC 24VDC 3.13A 50mA 7440mA 84% VHB75-D24-S2R5 18-36 VDC 2.5VDC 15A 50mA 2029mA 77% VHB75-D24-S3R3 18-36 VDC 3.3VDC 15A 50mA 2610mA 79% VHB75-D24-S5 18-36 VDC 5VDC 15A 50mA 3810mA 82% VHB75-D24-S12 18-36 VDC 12VDC 6.25A 50mA 3675mA 85% VHB75-D24-S15 18-36 VDC 15VDC 5A 50mA 3675mA 85% VHB75-D24-S24 18-36 VDC 24VDC 3.13A 50mA 3640mA 86% VHB75-D48-S2R5 36-75 VDC 2.5VDC 15A 50mA 1015mA 77% VHB75-D48-S3R3 36-75 VDC 3.3VDC 15A 50mA 1305mA 79% VHB75-D48-S5 36-75 VDC 5VDC 15A 50mA 1883mA 83% vHB75-D48-S12 36-75 VDC 12VDC 6.25A 50mA 1838mA 85% VHB75-D48-S15 36-75 VDC 15VDC 5A 50mA 1838mA 86% VHB75-D48-S24 36-75 VDC 24VDC 3.13A 50mA 1820mA 86% For more information, please visit the product page.

rev. page date DESCRIPTION: dc-dc converter 2 of 6 PART NUMBER: VHB75 NOTES: 1. Measured from high line to low line 2. Measured from full load to zero load 3. On/Off Control: Positive logic default. Referenced to -Vin. Open collector. Module ON...open circuit Module OFF...<0.8Vdc 4. For negative logic On/Off control, add suffix “N” to the model number INPUT Input Voltage Range 12V: 9-18V 24V: 18-36V 48V: 36-75V Under Voltage Lockout 12 Vin: power up 8.8V power down 8V 24Vin: power up 17V power down 16V 48Vin: power down 34V power down 32.5V ON/OFF Control see notes 3&4 Input Filter PI Type OUTPUT Voltage Accuracy ±1% max. Transient Response: 25% Step Load Change <500μ sec. External Trim Adj. Range ±10% Ripple & Noise 2.5V, 3.3V, 5V 20 mV RMS., max 20MHz BW 75 mV p-p., max 12V & 15V 30 mV RMS., max 100 mV p-p., max 24V 100 mV RMS., max 240 mV p-p, max Temperature Coefficient ±0.03%/°C Short Circuit ProtectionContinuous Safety approved to UL1950 (E222736) Line Regulation 1 ±0.2% max Load Regulation 2 ±0.2% max Over Voltage Protection trip Range, % Vo nom. 115-140% Current Limit 110-150% Nominal Output GENERAL SPECIFICATIONS Efficiency see table Isolation Voltage Input/Output 1500VDC min. Input/Case 1500VDC min. Output/Case 1500VDC min. Isolation Resistance 10 7Ohm min. Switching Frequency 12-24Vin 400kHz, Typ. 48Vin 300kHz, Typ Operating Case Temperature -40°C ~ +100°C Storage Temperature -55°C ~ +105°C Thermal Shutdown, Case Temp. 100°C Typ. Dimensions 2.28x2.40x0.50 inches (57.9x61.0x12.7mm) Case Material aluminum For more information, please visit the product page.

is needed. Following is the derating curve of VHB75 without heat sink. FIGURE 1. OUTPUT DERATING (FORCED CONVECTION WITH NO HEAT SINK) The thermal resistances are listed below. For more information, please visit the product page.

rev. page date DESCRIPTION: dc-dc converter 5 of 6 PART NUMBER: VHB75 External Output Trimming 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 tantalum capacitor and a 1.0uF ceramic capacitor across the output. Logic table Logic State(pin2) Negative logic Positive logic Logic Low-Switch Closed Module on Module off Logic High-Switch Open M odule off M odule on Remote On/Off Control The VHB75 series allows the user to switch the module on and off electronically with the remote on/off feature. Logic control defaults to “positive” logic. The diagram shows the recommentded curcuits for positive logic. The “negative logic” option is al so available. For more information, please visit the product page.

rev. page date DESCRIPTION: dc-dc converter 6 of 6 PART NUMBER: VHB75 For more information, please visit the product page.