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