ISL6627
ISL6627 is VR12 Compatible Synchronous Rectified Buck MOSFET Driver manufactured by Renesas.
VR11.1, VR12 patible Synchronous Rectified Buck MOSFET Driver
FN6992 Rev 1.00 January 24, 2014
The ISL6627 is a high frequency MOSFET driver designed to drive upper and lower power N-Channel MOSFETs in a synchronous rectified buck converter topology. The advanced PWM protocol of ISL6627 is specifically designed to work with Intersil VR11.1, VR12 controllers and bined with N-Channel MOSFETs to form a plete core-voltage regulator solution for advanced microprocessors. When ISL6627 detects a PSI protocol sent by an Intersil VR11.1, VR12 controller, it activates Diode Emulation (DE) operation; otherwise, it operates in normal Continuous Conduction Mode (CCM) PWM mode.
To further enhance light load efficiency, the ISL6627 enables diode emulation operation during PSI mode. This allows Discontinuous Conduction Mode (DCM) by detecting when the inductor current reaches zero and subsequently turning off the low side MOSFET to prevent it from sinking current.
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