UC3715

• Product introduction

The purpose of driving these two families at high speeds is to provide complementary switching drive waveforms. Synchronous rectification circuits and active clamp/reset circuits commonly used in complementary switching configurations provide zero-voltage switching. To facilitate soft-switching transitions, these drivers are provided on a separate programmable delay output waveform between the two. The delay pin also features true zero-voltage detection, allowing the application to start immediately when the corresponding switch is zero-voltage. These devices require a PWM-type input operation that interfaces with popular PWM controllers.

In the UC1714 series, the auxiliary output allows driving down a P-channel MOSFET.

characteristic

• Single input (PWM and TTL compatible)
• High current power FET driver, 1.0A Source/2A library
• Auxiliary output FET driver, 0.5A Source/1A library
• The time delay is programmable to 500ns independently of the 50ns power and auxiliary outputs
• Time delay or true zero voltage operation is configured independently for each output
• The switching frequency is 1MHz
• Typical propagation delay of 50ns
• The ENBL pin activates sleep mode 220uA
• The output power is active low in sleep mode
• Synchronous rectifier drive