Key featuresISL78322
Serial data bus
Dual output:
Configure stage 3 - 2 - 1 for the first time using two integrated gate driver outputs
Configuration 2 - 1 phase 2 output
Modulator for R3
Excellent transient response
High efficiency at light load
The system accuracy of 0.5% overheats
Supports multiple current sensing methods
Lossless inductive DCR current sensing
Precision current sense resistors
Differential voltage remote sensing
Programmable V-start-up voltage start-up
The resistor is programmable up to the switching frequency of the two outputs
Adaptive body diode on-time is reduced
description
The ISL95838 pulse-width modulation (PWM) controller IC provides a complete solution for power supplies for IMVP-7/VR12™ compatible microprocessors and graphics processor cores. It provides control and protection of two voltage regulators (VR). The first VR, typical of the Vcore, uses an integrated drive 2 that can run in a 3-2-1 phase configuration. The second round of voluntary retirement, typical of graphics, can work in a 2-1 phase configuration. The two village representatives share the serial control bus to communicate with the CPU, achieving a lower cost and smaller board area compared to the two-chip approach, and the two village representatives utilize Intersil's robust ripple regulator R3 technology ™. The R3 modulator has numerous advantages over traditional modulators, including faster transient response, variable switching frequency during load transients, and improved light load efficiency due to its ability to automatically change the switching frequency. The ISL95838 has several other key features. Both outputs support a single NTC thermistor DCR temperature compensation, or DCR current sensing if more accurate resistance current sensing is required. Two outputs for remote voltage detection, programmable V start-up voltage, max, switching frequency, adjustable overcurrent protection and independent power good signal.