MAX17021

19-4372; Rev 2; 7/09 KIT ATION EVALU LE B A IL A AV Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies General Description Features o o o o o o o o o o o o o o o o o o o Single-/Dual-Phase, Quick-PWM Controllers MAX17021 IMVP-6+ (Montevina) MAX17082/MAX17482 IMVP-6.5 (Calpella) ±0.5% VOUT Accuracy Over Line, Load, and Temperature 7-Bit 0 to 1.50V VID Control Dynamic Phase Selection Optimizes Active/Sleep Efficiency Transient Phase Overlap Reduces Output Capacitance Integrated Boost Switches Active Voltage Positioning with Adjustable Gain Programmable 200kHz to 800kHz Switching Frequency Accurate Current Balance and Current Limit Adjustable Slew-Rate Control Power-Good, Clock Enable, and Thermal-Fault Outputs Phase Current Imbalance Fault Output Drives Large Synchronous Rectifier MOSFETs 4V to 26V Battery Input-Voltage Range Undervoltage and Thermal-Fault Protection Overvoltage Protection (MAX17021/MAX17082) Soft-Startup and Soft-Shutdown MAX17021/MAX17082/MAX17482 The MAX17021/MAX17082/MAX17482 are 2/1-phaseinterleaved Quick-PWM™ step-down VID power-supply controllers for notebook CPUs. True out-of-phase operation reduces input ripple current requirements and output- voltage ripple, while easing component selection and layout difficulties. The Quick-PWM control provides instantaneous response to fast load-current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning com...