ISL95880 Regulator Datasheet

ISL95880 Datasheet, PDF, Equivalent


Part Number

ISL95880

Description

3+1+1 Voltage Regulator

Manufacture

Renesas

Total Page 3 Pages
Datasheet
Download ISL95880 Datasheet


ISL95880
Data Short
To request the full datasheet, visit the ISL95880 product page.
ISL95880
3+1+1 Voltage Regulator with Expanded ICCMAX Register Range Supporting
IMVP8 CFL/CNL CPUs
The ISL95880 is compliant with IMVP8, and provides
a complete power solution for Intel microprocessors
supporting core, graphics, and system agent rails.
The controller provides control and protection for
three Voltage Regulator (VR) outputs. The VR A
output can be configured for 3-, 2-, or 1-phase
operation. VR B supports 1-phase operation, and
VR C supports 1-phase operation. The address
options for these three outputs allow for maximum
flexibility to support the IMVP8 CPU. All three VRs
share a common serial control bus to communicate
with the CPU and achieve lower cost and smaller
board area compared with a two-chip approach. The
ISL95880 has expanded ICCMAX register tables for VR
A and VR C to support Intel CFL-H.
Based on the Renesas Robust Ripple Regulator
(R3™) technology, the R3 modulator has many
advantages compared to traditional modulators.
These include faster transient settling time, variable
switching frequency in response to load transients,
and improved light-load efficiency due to diode
emulation mode with load-dependent low switching
frequency.
The ISL95880 has several other key features. The
controller provides PWM outputs, which support Intel
DrMOS power stages (or similar) and discrete power
stages using the Renesas ISL95808 high voltage
synchronous rectified buck MOSFET driver. The
controller complies with IMVP8 PS4 power
requirements and supports compatible power stages
and drivers. The controller supports DCR current
sensing with a single NTC thermistor for DCR
temperature compensation, or more precision through
resistor current sensing.
Features
• Supports Intel serial data bus interface
○ Fully supports PS4 power domain entry and exit
• Supports system input power monitor (PSYS)
• Three-output controller
○ VR A configurable for 3-, 2-, 1-phase VR design
○ VR B supports 1-phase VR design
○ VR C supports 1-phase VR design
• 0.5% system accuracy over temperature
• Low supply current in PS4 state
• Supports multiple current sensing methods
○ Lossless inductor DCR current sensing
○ Precision resistor current sensing
• Differential remote voltage sensing
• Programmable SVID address
• Programmable VBOOT voltage at start-up
• Resistor programmable address selection, IMAX,
slew rate, switching frequency, and droop
• Adaptive body diode conduction time reduction
Applications
• IMVP8 compliant notebooks, desktops, Ultrabooks,
and tablets
• Supports higher ICCMAX range of CFL-H CPUs
Related Literature
For a full list of related documents, visit our website:
ISL95880 device page
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0
VIN = 19V
VIN = 12V
VIN = 8V
6 12 18 24 30 36 42 48 54 60 66
IOUT (A)
Figure 1. Load Line Regulation
R16DS0022EU0100 Rev.1.01
Mar.11.19
Page 1 of 3

ISL95880
ISL95880
1. Overview
1. Overview
1.1 Simplified Application Circuit
VIN +5V
+5V
GT
VCORE
VCCSENSE_GT
VSSSENSE_GT
SA
VCORE
VCCSENSE_SA
VSSSENSE_SA
VIN
VIN
VIN VCC
FCCM_A
+5V
ISL95808
UGATE VCC
PHASE FCCM
BOOT
LGATE PWM
GND
PWM2_A
FCCM_B
PWM_B
PWM1_A
ISUMP_B
ISL95808
VCC UGATE
FCCM PHASE
PWM
BOOT
LGATE
GND
ISL95808
VCC UGATE
FCCM PHASE
PWM
BOOT
LGATE
GND
ISUMN_B
°C
V+5
ISL95808
UGATE VCC
PHASE FCCM
BOOT
LGATE
PWM
GND
PWM3_A
COMP_B
FB_B
RTN_B
IMON_B
NTC_B
ISUMP_A
ISUMN_A
ISEN1_A
ISEN2_A
ISEN3_A
COMP_A
ISL95880
FB_A
FCCM_C
RTN_A
PWM_C IMON_A
ISL95808
VCC UGATE
FCCM PHASE
PWM
BOOT
LGATE
GND
ISUMP_C NTC_A
ISUMN_C
°C
COMP_C
VR_HOT#
FB_C VR_READY
RTN_C
VR_ENABLE
IMON_C
PROG1
SDA
PROG2
ALERT#
PROG3
SCLK
PROG4
PROG5
PSYS
GND
VIN
VIN
VIN
CPU
VCORE
VCCSENSE_CPU
VSSSENSE_CPU
VR_HOT#
VR_READY
VR_ENABLE
SDA
ALERT#
SCLK
PSYS
Figure 2. Typical ISL95880 Application Circuit Using Resistor Sensing
R16DS0022EU0100 Rev.1.01
Mar.11.19
Page 2 of 3


Features Data Short To request the full datasheet , visit the ISL95880 product page. ISL9 5880 3+1+1 Voltage Regulator with Expan ded ICCMAX Register Range Supporting IM VP8 CFL/CNL CPUs The ISL95880 is compl iant with IMVP8, and provides a complet e power solution for Intel microprocess ors supporting core, graphics, and syst em agent rails. The controller provides control and protection for three Volta ge Regulator (VR) outputs. The VR A out put can be configured for 3-, 2-, or 1- phase operation. VR B supports 1-phase operation, and VR C supports 1-phase op eration. The address options for these three outputs allow for maximum flexibi lity to support the IMVP8 CPU. All thre e VRs share a common serial control bus to communicate with the CPU and achiev e lower cost and smaller board area com pared with a two-chip approach. The ISL 95880 has expanded ICCMAX register tabl es for VR A and VR C to support Intel C FL-H. Based on the Renesas Robust Rippl e Regulator (R3™) technology, the R3 modulator has many advanta.
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