ISL6218 Single Phase IMVP-IV Controller for Intel Pentium M

The ISL6218 Single-Phase Buck PWM control IC, with integrated half bridge gate driver, provides a precision voltage regulation system for advanced Pentium-M microprocessors in notebook computers. 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 500kHz per phase.

The ISL6218 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 mobile VID specification. The ISL6218 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" provides excellent static and dynamic CORE voltage regulation.

Another feature of the ISL6218 IC controller is the internal PGOOD delay circuit that holds the PGOOD pin low for 3ms to 12ms after the VCCP and VCC_MCH regulators are within regulation. This PGOOD signal is masked during VID changes. Output 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. Overcurrent protection features a 32 cycle overcurrent shutdown. PGOOD, Overvoltage, Undervoltage and Overcurrent provide monitoring and protection for the microprocessor and power system. The ISL6218 IC is available in a 38 Ld TSSOP and 40 Ld QFN package.

ISL6218 特点

IMVP-IVTM Compliant CORE Regulator
Single-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 Diode
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 Specification
Discontinuous Mode Of Operation for Increased Light Load Efficiency in Deep and Deeper Sleep Mode
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 to 500kHz
Pb-Free Plus Anneal Available (RoHS Compliant)

ISL6218 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 $
ISL6218CRZ	量产	民用级	40 Ld QFN	2
ISL6218CRZ-T	量产	民用级	40 Ld QFN T+R	2
ISL6218CVZ	量产	民用级	38 Ld TSSOP	3
ISL6218CVZ-T	量产	民用级	38 Ld TSSOP T+R	3
ISL6218CVZA	量产	民用级	38 Ld TSSOP	3
ISL6218CVZA-T	量产	民用级	38 Ld TSSOP T+R	3
ISL6218CV	停产	民用级	38 Ld TSSOP	1	N/A
ISL6218EVAL2	停产		评估板	N/A	N/A
ISL6218CV-T	To Be Discontinued	民用级	38 Ld TSSOP T+R	1