uP1961S
Description
Features
The u P1961S is a high performance gate driver IC with Phase Extension Module (PEM). The PEM interleaves the single PWM input and drives dual-phase synchronous buck power stages. The PEM also extracts and passes the dual-phase current signals to the controller. When operating with u PI’s VR controllers with DCR current balance scheme, the u P1961S can double the phase number with perfect phase interleaving and channel current balancing.
Each driver is capable of driving a 5000p F load with 30ns transition time. This device bined with u PI multiphase buck PWM controller forms a plete core voltage regulator for advanced microprocessors.
The u P1961S features adaptive anti-shoot-through protection that prevents cross-conduction of the external MOSFET while maintains minimum deadtime for optimized efficiency.
All gate drivers are turned off by pulling low EN pin or high-impedance at PWM0 pin, preventing rapid output capacitor discharge during system shutdowns. Another...
