Datasheet
ISL91302BIK
Dual/Single Output PMIC with 12-Bit Telemetry ADC for Industrial and Computing Applications
The ISL91302BIK is a highly efficient, dual or single
Features
output, synchronous multiphase buck switching
• Dual output 3+1 or 2+2, or single output 4-phase
regulator that can deliver up to 5A per phase
• 2.7V to 5.5V supply voltage
• 5A per phase output current capability
• Small solution size
maximum output current. The ISL91302BIK features
four integrated power stages and two controllers. The
ISL91302BIK can assign its power stages and
controllers to two dual-phase outputs (2+2) or one
three-phase and one-phase output (3+1) or
one-phase output (4+0). This flexibility allows
seamless design-in for a wide range of applications in
which dual, triple, or quad-phase outputs are needed,
such as CPU and GPU core power mobile
applications.
• High efficiency (94% peak for 3.3V V , 1.8V V
,
OUT
IN
L = 220nH)
• Low I in low power mode
Q
• Proprietary control scheme reduces the output
capacitor and supports fast load transients (such as
50A/µs per phase)
ISL91302BIK integrates low ON-resistance MOSFETs
at 2MHz switching frequency, allowing very small
external inductors and capacitors to be used. With
automatic Diode Emulation and Pulse Skipping
modes under light-load conditions, this feature
improves efficiency and maximizes battery life. The
ISL91302BIK delivers a highly robust power solution
through a controller based on the Renesas proprietary
Rapid Robust Ripple Regulator (R5) technology,
offering tight output accuracy and load regulation,
ultra-fast transient response, seamless DCM/CCM
transitions, and no required external compensation.
• Voltage, current, and temperature telemetry through
integrated ADC plus auxiliary inputs
• ±0.7% system accuracy, remote voltage sensing
2
• I C and SPI programmable output from 0.3V to 2.0V
• Independent Dynamic Voltage Scaling (DVS) for
each output
• Soft-start and fault detection (UV, OV, OC, OT),
short-circuit protection
• 4.7mmx6.3mm 35 ball TFBGA with 0.8mm pin pitch
Applications
In addition to the standard interrupt, chip enable, and
watchdog reset functions, the ISL91302BIK also
features four MPIOs and two GPIOs that support SPI,
I2C communication protocol, external signal telemetry
with an internal ADC, Dynamic Voltage Scaling (DVS)
with selectable slew rates, and various other pin
mode functions.
• Industrial controls and FPGAs
• Computing servers and systems
• Home gateways and applicances
Related Literature
For a full list of related documents, visit our website
• ISL91302BIK product page
ISL91302BIKZ 4+0
ISL91302BIKZ 3+1
PH_D
VIN
PVIN_A
PVIN_B
PVIN_C
PVIN_D
BUCK1
VOUT1
VOUT2
PH_B
PH_A
PH_C
100
95
VOUT1
VOUT1
PH_D
PH_B
PH_A
AVIN
VIO
90
VIO
BUCK2
85
SCL/SDA
3
GPIO<2:0>
PH_C
RTN1
ISL91302BIKZ 2+2
PH_D
80
75
70
65
60
Test Conditions:
4
MPIO<3:0>
INT
V
OUT = 1.8V
TA = +25oC
VOUT2
VOUT1
BUCK2
L = XEL3520-471MEB (470nH)
PH_C
PH_B
EN
Vin = 3.3V
Vin = 5.0V
WDOG_RST
BUCK1
AVIN_FILT
GND
PH_A
0.1
1.0
10.0
PGNDs
Load Current (A)
Phase Configurations
Figure 1. Simplified Block Diagram
Figure 2. Efficiency vs Load Current
Page 1 of 61
FN9351 Rev.1.01
Feb.25.20
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