The LTC ®3722-1/LTC3722-2 phase shift PWM controllers provide all of the control and protection functions necessary to implement a high efficiency, zero voltage switched (ZVS), full bridge power converter.
The LTC3722‑1 and LTC3722‑2 are phase‑shift PWM controllers that provide adaptive or manual delay control for zero‑voltage‑switching (ZVS) full‑bridge converters. They include adjustable synchronous rectification timing, system UVLO with hysteresis, programmable leading‑edge blanking, and a low‑current startup and quiescent operation. Both devices support current‑mode (LTC3722‑1) or voltage‑mode (LTC3722‑2) control and offer a range of protection features.
The document lists absolute maximum ratings, detailed electrical characteristics, pin functions, package dimensions, and typical performance graphs. It also shows a typical application circuit for a 36‑70 V input to a 12 V/35 A isolated full‑bridge supply and provides part numbers for related components.
| Start‑Up Current | 230 pA (typ) |
|---|---|
| Operating Current (No Load) | 8 mA (typ) |
| Package Type | 24‑lead narrow plastic SSOP (GN) |
SYNC is the synchronization input/output for the oscillator, with an input threshold of approximately 1.9 V and should be terminated with a 5.1 kΩ resistor to GND.
The device is supplied in a 24‑lead narrow plastic SSOP (GN) package.
The typical UVLO hysteresis is 4.2 V.