NCV12711SSRGEVB: NCV12711 EVB 12V/1A SSR secondary side regulation

The evaluation board NCV12711SSRGEVB is wide input range secondary-side-regulated flyback converter for automotive applications capable deliver up to 12W (12V/1A) on its output.
The converter is built with the NCV12711 operated in current-mode control at 100 kHz. This control circuit offers many features to build an energy-efficient converter with all the needed protections like cycle-by-cycle current limit with a 250-mV sense voltage, over-current protection (OCP) and over-voltage protection (OVP) on the VCC pin.
The controller drives an N-channel MOSFET as with any classical flyback converter at a user-adjustable switching frequency. The secondary side hosts a low-Vf diode for efficient rectification in continuous conduction mode (CCM).
Features and Applications

Features

  • • Internal 20-mA current source for lossless start-up sequence and self-supply operation
  • • Smooth start-up sequence with frequency sweep
  • • Internal operational amplifier with precise 2.5-V reference voltage
  • • Current-mode control operation
  • • Short circuit protection
  • • Over voltage protection
  • • User-Adjustable Soft-Start Ramp
  • • Shutdown threshold for external disable
  • • Input Voltage UVLO with Hysteresis
  • • 0% duty ratio mode for low standby power
Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
NCV12711SSRGEVB Active
Pb-free
NCV12711 EVB 12V/1A SSR secondary side regulation NCV12711ADNR2G
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: Manual A 12-V/1-A Secondary Side Regulated Isolated Flyback Converter for Automotive Applications EVBUM2839/D - 1206 KB  0 
Eval Board: Gerber NCV12711SSRGEVB Bill of Materials (ROHS Compliant) NCV12711SSRGEVB_BOM_ROHS - 461 KB  0 
Eval Board: Schematic NCV12711SSRGEVB Schematic NCV12711SSRGEVB_SCHEMATIC - 957 KB  2 
Eval Board: Test Procedure NCV12711SSRGEVB Test Procedure NCV12711SSRGEVB_TEST_PROCEDURE - 486 KB  0 
Eval Board: Gerber NCV12711SSRGEVB Gerber Layout Files (Zip Format) NCV12711SSRGEVB_GERBER - 225 KB  0 
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