The LTC1922-1 is a high performance, zero voltage switched, phase shift, full-bridge power converter controller from LTC company. It integrates synchronous rectification function. It is ideal for developing isolated, low voltage, high current outputs from a high voltage input source.
The LTC1922-1 is a phase‑shift PWM controller that integrates adaptive DirectSense™ zero‑voltage switching, synchronous rectification control, and programmable slope compensation. It is designed for high‑efficiency, isolated full‑bridge power converters with output power ranging from 50 W to several kilowatts.
The document includes absolute maximum ratings, electrical characteristics, pin descriptions, typical performance graphs, package dimensions, and a typical application circuit for a 48 V to 3.3 V, 40 A isolated converter.
| Supply Voltage Range (Oscillator) | 6.5 V to 9.5 V |
|---|---|
| Undervoltage Lockout (UVLO) Threshold | 10.25 V to 10.7 V |
| Start‑Up Current | 145 pA to 250 pA |
The oscillator operates with a supply voltage between 6.5 V and 9.5 V.
The undervoltage lockout threshold is specified as 10.25 V to 10.7 V.