ISL6565B Multiphase PWM Controller with Precision rDS(ON) or DCR Current Sensing for VR10.X Application

VIN (min) (V)	3
VIN (max) (V)	12
VOUT (min) (V)	0.8375
VOUT (max) (V)	1.65
IOUT (max) (A)	>120

The ISL6565A, ISL6565B controls microprocessor core voltage regulation by driving up to 3 synchronous-rectified buck channels in parallel. Multiphase buck converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple currents.

The difference between the ISL6565A and the ISL6565B is that the ISL6565A utilizes rDS(ON) current sensing, while the ISL6565B utilizes DCR current sensing for each phase. These cost and space saving methods of current sensing are used for adaptive voltage positioning (droop), channelcurrent balancing, and overcurrent protection. To ensure the accuracy of droop, a programmable internal temperature compensation function is implemented to compensate the effect of rDS(ON) and DCR temperature sensitivity.

A unity gain, differential amplifier is provided for remote voltage sensing. Any potential difference between remote and local grounds is eliminated using the remote-sense amplifier. The precision threshold-sensitive enable input is available to accurately coordinate the start up of the ISL6565A, ISL6565B with Intersil MOSFET driver ICs. Dynamic-VIDTM technology allows seamless on-the-fly VID changes. The offset pin allows accurate voltage offset settings that are independent of VID setting.

ISL6565B 特点

Multiphase Power Conversion
- 2 or 3 Phase Operation
Precision Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over Temperature and Life
- Adjustable Reference-Voltage Offset
Precision rDS(ON) or DCR Current Sensing
- Integrated Programmable Temperature Compensation
- Accurate Load-Line Programming
- Accurate Channel-Current Balancing
- Low-Cost, Lossless Current Sensing
Input Voltage: 12V or 5V Bias
Microprocessor Voltage Identification Input
- Dynamic VID(R) Technology
- 6-Bit VID Input
- 0.8375V to 1.600V in 12.5mV Steps
Threshold Enable Function for Precision Sequencing
Overcurrent Protection
Overvoltage Protection
Digital Soft-Start
Operation Frequency up to 1.5MHz per Phase
QFN Package
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile
Pb-free Available

ISL6565B 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 $
ISL6565BCBZ	量产	民用级	28 Ld SOIC	3	2.02
ISL6565BCBZ-T	量产	民用级	28 Ld SOIC T+R	3	2.02
ISL6565BCRZ	量产	民用级	32 Ld QFN	3	2.07
ISL6565BCRZ-T	量产	民用级	32 Ld QFN T+R	3	2.07
ISL6565BCVZ	量产	民用级	28 Ld TSSOP	3	2.07
ISL6565BCVZ-T	量产	民用级	28 Ld TSSOP T+R	3	2.07
ISL6565BCB	停产	民用级	28 Ld SOIC	1	N/A
ISL6565BCB-T	停产	民用级	28 Ld SOIC T+R	1	N/A
ISL6565BCR	停产	民用级	32 Ld QFN	1	N/A
ISL6565BCR-T	停产	民用级	32 Ld QFN T+R	1	N/A
ISL6565BCV	停产	民用级	28 Ld TSSOP	1	N/A
ISL6565BCV-T	停产	民用级	28 Ld TSSOP T+R	1	N/A