R2J20701NP

R2J20701NP Peak Current Mode Synchronous Buck Controller with Power MOS FETs REJ03G1459-0400 Rev.4.00 Jun 30, 2008 Description This all-in-one SiP for POL (point-of-load) applications is a multi-chip module incorporating a high-side MOS FET, low-side MOS FET, and PWM controller in a single QFN package. The on and off timing of the power MOS FET is optimized by the built-in driver circuit, making this device suitable for large-current high-efficiency buck converters. In a simple peak-current mode topology, stable operation is obtained in a closed power loop, and a fast converter is easily realized with the addition of simple components. Furthermore, the same topology can be applied to realize converters for parallel synchronized operation with current sharing, and two-phase operation. The package also incorporates a high-side bootstrap Schottky barrier diode (SBD), eliminating the need for an external SBD for this purpose. Features Three chips in one package for high-efficiency and space saving Large average output current (35 A) Wide input voltage range: 8 to 14 V 0.6 V reference voltage accurate to within 1% Wide programmable switching frequency: 200 kHz to 1 MHz Fast response by peak-current-mode topology. Simple current sharing (up to five modules in parallel) Two-phase operation in parallel operation Built-in SBD for boot strapping On/off control Hiccup operation under over load condition Tracking function Thin small package: 56-pin QFN (8 mm...