31双PWM控制器电流监测，用于IMVP - 7 / VR12â ?? ¢处理器 Dual 31 PWM Controller with Current Monitor for IMVP-7/VR12⢠CPUs
Dual 3+1 PWM Controller with Current Monitor for IMVP-7/VR12™ CPUs
The ISL95839 Pulse Width Modulation PWM controller IC provides a complete solution for IMVP-7/VR12™ compliant microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage Regulators VRs. The first VR, typical for Vcore, incorporates 2 integrated drivers and can operate in 3-, 2- or 1-phase configurations. The second VR, typical for Graphics, incorporates 1 integrated
driver. The two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach.
Features
• Serial data bus
• Dual outputs:
\- Configurable 3-, 2- or 1-phase for the 1st output using two integrated gate drivers
\- 2nd output using an integrated gate driver
•R3™ Modulator
\- Excellent transient response
\- High light load efficiency
• 0.5% system accuracy over-temperature
• Supports multiple current sensing methods
\- Lossless inductor DCR current sensing
\- Precision resistor current sensing
• Differential remote voltage sensing
•Programmable VBOOTvoltage at start-up
• Resistor programmable IMAX, switching frequency for both outputs
• Output current monitor IMON and IMONG
• Adaptive body diode conduction time reduction
Applications
• IMVP-7/VR12 compliant computers