ISL78225 - 4-Phase Interleaved Boost PWM Controller
PIN # 1 2 3 4 5 6 7 8 9 10 11 SYMBOL FS SS COMP FB VREF2 GND SLOPE PLL_COMP SYNC CLK_OUT PWM_INV DESCRIPTION A resistor placed from FS to ground will set the PWM switching frequency.
Use this pin to set up the desired soft-start time.
A capacitor placed from SS to ground will set up the soft-sta
DATASHEET ISL78225 4-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement FN7909 Rev 4.00 September 5, 2014 The ISL78225 4-phase controller is targeted for applications where high efficiency (>95%) and high power are required.
The multiphase boost converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple.
Lower ripple results in fewer input/output capacitors and therefore lower component cost and smaller imp
ISL78225 Features
* Peak current mode PWM control with adjustable slope compensation
* Precision resistor/DCR current sensing
* 2-, 3- or 4-phase operation
* Adjustable phase dropping/diode emulation/pulse skipping for high efficiency at light load
* Phase dropping facilitated
