ISL6217 PWM Controller for Intel Pentium M

The ISL6217 Multi-Phase Buck PWM control IC, with integrated half bridge gate drivers, provides a precision voltage regulation system for advanced Pentium" IV microprocessors in notebook computers. Two-phase operation eases the thermal management issues and load demand of Intel's latest high performance processors. This control IC also features both input voltage feed-forward and average current mode control for excellent dynamic response, "Loss-less" current sensing using MOSFET RDS(ON) and user selectable switching frequencies from 250kHz to 1MHz per phase.

The ISL6217 includes a 6-bit digital-to-analog converter (DAC) that dynamically adjusts the CORE PWM output voltage from 0.700V to 1.708V in 16mV steps and conforms to the Intel IMVP-IVTM and IMVP-IV+TM mobile VID specification. The ISL6217 also has logic inputs to select Active, Deep Sleep and Deeper Sleep modes of operation. A precision reference, remote sensing and proprietary architecture, with integrated processor-mode compensated "Droop", provide excellent static and dynamic CORE voltage regulation.

To improve efficiency at light loading, the ISL6217 can be configured to run in single phase PWM in ACTIVE, DEEP or DEEPER SLEEP modes of operation.

Another feature of this IC controller is the PGOOD monitor circuit that is held low until CORE voltage increases, during its soft-start sequence, to within 12% of the "Boot" voltage. This PGOOD signal is masked during VID changes. Output Overcurrent, Overvoltage and Undervoltage are monitored and result in the converter latching off and PGOOD signal being held low.

The Overvoltage and Undervoltage thresholds are 112% and 84% of the VID, Deep or Deeper Sleep setpoint, respectively. Overcurrent protection features a 32 cycle Overcurrent shutdown. PGOOD, Overvoltage, Undervoltage and Overcurrent provide monitoring and protection for the microprocessor and power system. The ISL6217 IC is available in a 38 lead TSSOP.

ISL6217 特点

IMVP-IVTM and IMVP-IV+TM Compliant CORE Regulator
Single and/or Two-phase Power Conversion
"Loss-less" Current sensing for improved efficiency and reduced board area
- Optional Discrete Precision Current Sense Resistor
Internal Gate-Drive and Boot-Strap Diodes
Precision CORE Voltage Regulation
- 0.8% system accuracy over temperature
6-Bit Microprocessor Voltage Identification Input
Programmable "Droop" and CORE Voltage Slew Rate to comply with IMVP-IVTM and IMVP-IV+TM specification
Direct Interface with System Logic (STP_CPU# and DPRSLPVR) for Deep and Deeper Sleep modes of operation
Easily Programmable voltage setpoints for Initial "Boot", Deep Sleep and Deeper Sleep Modes
Excellent Dynamic Response
- Combined Voltage Feed-Forward and Average Current Mode Control
Overvoltage, Undervoltage and Overcurrent Protection
Power-Good Output with internal blanking during VID and mode changes
User programmable Switching Frequency of 250kHz - 1MHz per phase
Pb-Free Plus Anneal Available (RoHS Compliant)

ISL6217 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL6217CVZ	量产	民用级	38 Ld TSSOP	3	3.19
ISL6217CVZ-T	量产	民用级	38 Ld TSSOP T+R	3	3.19
ISL6217MB-EV1	停产		评估板	N/A	N/A
ISL6217CVZA	停产	民用级	38 Ld TSSOP	3	N/A
ISL6217CVZA-T	停产	民用级	38 Ld TSSOP T+R	3	N/A
ISL6217EVAL2	License Required		评估板	N/A	价格录入中
ISL6217CV	To Be Discontinued	民用级	38 Ld TSSOP	1	3.82
ISL6217CV-T	To Be Discontinued	民用级	38 Ld TSSOP T+R	1	3.82