NCP1395B

NCP1395A/B High Performance Resonant Mode Controller The NCP1395A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 1.0 MHz Voltage Controller Oscillator whose control mode brings flexibility when an ORing function is a necessity, e.g. in multiple feedback paths implementations. Protections featuring various reaction times, e.g. immediate shutdown or timer−based event, brown−out, broken optocoupler detection etc., contribute to a safer converter design, without engendering additional circuitry complexity. An adjustable deadtime also helps lowering the shoot−through current contribution as the switching frequency increases. Finally, an onboard operational transconductance amplifier allows for various configurations, including constant output current working mode or traditional voltage regulation. Features High Frequency Operation from 50 kHz up to 1.0 MHz Selectable Minimum Switching Frequency with "3% Accuracy Adjustable Deadtime from 150 ns to 1.0 ms Startup Sequence via an Adjustable Soft−Start Brown−Out Protection for a Simpler PFC Association Latched Input for Severe Fault Conditions, e.g. Overtemperature or OVP Timer−Based Input with Auto−Recovery Operation for Delayed Event Reaction Enable Input for Immediate Event Reaction or Simple ON/OFF Control Operational Transconductance Amplifier (OTA) for Multiple Feedback Loops VCC Operation up to 20 V Low Startup Current of 300 mA Max...