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reference designISL91211A | Demoboard ISL91211AIK-REFZ

Renesas ISL91211A | Demoboard ISL91211AIK-REFZ

Triple Output Power Management IC

Overview

TopologyBuck Converter
Input voltage5 V
Switching frequency2000-6000 kHz
Output 13.3 V / 3 A
Output 21.8 V / 3 A
Output 32.5 V / 3 A
IC revision1.0

Description

The ISL91211A is a 4-phase, three output programmable Power Management IC (PMIC) and the ISL91211B is a 4-phase, four output programmable PMIC. They are optimized with highly efficient synchronous buck converters capable of multiphase and single-phase operations that can deliver up to 5A per phase continuous output current. It features four buck controllers and has the capability to reconfigure its power stages to these controllers. This flexibility allows seamless design-in for a wide range of applications that require high output power and small solution size.ISL91211A and ISL91211B integrate low ON-resistance MOSFETs and programmable PWM frequency, allowing the use of very small external inductors and capacitors. They feature automatic Diode Emulation and Pulse Skipping modes under light-load conditions to further improve efficiency and maximize battery life. The ISL91211A and ISL91211B deliver a highly robust power solution by featuring a controller based on the Renesas proprietary R5 Technology that provides tight output accuracy and load regulation, ultra-fast transient response, seamless DCM/CCM transitions, and requires no external compensation.In addition to the standard interrupt, chip enable, and watchdog reset functions, ISL91211A and ISL91211B also feature four MPIOs and three GPIOs capable of supporting SPI, I2C communication protocol, and various other pin mode functions.

Features

  • Triple output 2+1+1 phases (ISL91211A) or quad output single phase (ISL91211B)
  • 2.5V to 5.5V supply voltage
  • 5A per phase output current capability
  • Small solution size (for four phase design)
  • High efficiency (94.7% for 3.8VIN/1.8VOUT)
  • Low IQ in low power mode
  • Proprietary control scheme reduces output capacitor and supports fast load transient (such as 50A/µs per phase)
  • ±0.7% system accuracy, remote voltage sensing
  • Programmable PWM frequency from 2MHz to 6MHz
  • I2C programmable output from 0.3V to 2V
  • Independent Dynamic Voltage Scaling (DVS) for each output
  • Soft-start and fault detection (UV, OV, OC, OT), short-circuit protection
  • 2.551mmx3.67mm 54 ball WLCSP with 0.4mm pin pitch

Typical applications

  • Artificial Intelligence (AI) Processors / Client/Enterprise/Data Center SSD, NAS
  • Optical Transceiver Modules
  • Smartphones, AR/VR Glasses, Drones

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
PCB/Cable/Panel
Modularity
Type
Wire Section
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74437324022
SPECWE-LHMI SMT Power Inductor, 2, –
Simu­lation
Availability
–
Downloads9 files

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CAD files ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Pins2 
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Size4020 
Operating Temperature -40 °C up to +125 °C
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Length4.45 mm
Width4.06 mm
Height1.8 mm
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Inductance2.2 µH
Performance Rated Current4.05 A
Saturation Current @ 10%4.45 A
Saturation Current @ 30%8.4 A
DC Resistance61 mΩ
Self Resonant Frequency49 MHz
MountSMT 
–Check availability
74437324033
SPECWE-LHMI SMT Power Inductor, 2, –
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Pins2 
–
–
–
–
–
–
–
Size4020 
Operating Temperature -40 °C up to +125 °C
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Length4.45 mm
Width4.06 mm
Height1.8 mm
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Inductance3.3 µH
Performance Rated Current3.5 A
Saturation Current @ 10%2.75 A
Saturation Current @ 30%5.45 A
DC Resistance76 mΩ
Self Resonant Frequency40 MHz
MountSMT 
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691102710002
SPECWR-TBL Series 102 - 5.00 mm Horizontal Entry Modular, 2, Wire Protector
Simu­lation–
Availability
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Downloads6 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 102 - 5.00 mm Horizontal Entry Modular
Pins2 
PCB/Cable/PanelPCB 
ModularityYes 
TypeHorizontal 
Wire Section 22 to 14 (AWG) 0.75 to 1.5 (mm²)
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Operating Temperature -40 °C up to +105 °C
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Length10 mm
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Height10 mm
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PackagingBox 
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MountTHT 
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885012006004
SPECWCAP-CSGP MLCCs 10 V(DC), –, –
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 10 V(DC)
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–
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Capacitance22 pF
Capacitance±5% 
Rated Voltage10 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor840 
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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–Check availability