sPMIC. ISL1801 Datasheet

ISL1801 sPMIC. Datasheet pdf. Equivalent


Renesas ISL1801
ISL1801
sPMIC for Micro Converter Bias and Drivers
The ISL1801 is a power management IC (PMIC) optimized for
solar array micro converters and other systems operating from
a high voltage DC supply. The ISL1801 can be used in buck,
boost or buck-boost microconverter topologies in order to
maximize the energy harvest from a solar array. In addition to
the power stage and main controller, the ISL1801 includes the
bias regulators, gate drivers, current sense amplifier and
comparators needed for micro converters.
The ISL1801 integrates two switching regulators that can be
used to generate the driver and the micro-controller (MCU)
power supplies. In addition, it has a low offset, low drift
amplifier for current sensing, two comparators for overvoltage
and overcurrent protection plus a watchdog timer to reset the
MCU if necessary. This single IC solution offers high integration
and dramatically reduces the total number of components in
the microconverter system improving the system reliability and
reducing cost.
The first regulator takes input voltages ranging from 9V to 90V
from the solar panel and outputs a regulated supply for drivers
and the secondary regulator. The secondary regulator converts
the output of the first regulator to a programmable
micro-controller supply, typically 3.3V. A high voltage start-up
LDO provides the necessary bias voltage until the switching
regulator is operating.
The ISL1801 integrates two high-speed MOSFET drivers for
buck, flyback or boost converters configured as shown in the
application schematics. The Drive3 also has the integrated
peak current limiting capabilities.
The ISL1801 includes comprehensive start-up, shutdown and
fault logic to ensure reliable operation of micro converters in
solar applications.
DATASHEET
FN8259
Rev 1.00
July 24, 2014
Features
• 90V input buck switching regulator
- 120mA (minimum) output with OCP, OVP, OTP
- Integrated upper and lower MOSFETs
• 90V on-chip start-up 6.7V LDO
• Low voltage buck switching regulator
- 200mA (minimum) output with OCP, OVP
- Integrated upper and lower MOSFETs
- PGOOD output
• Low voltage bias LDO
- Input voltage range from 6V to 14V
- Regulated 5V output up to 10mA
• Dual high-speed gate driver
- 14V voltage rating
- 2A peak sourcing and 5A peak sinking current
- Peak current limit for DRIVE3
• Dedicated amplifier for accurate current sense
• Two comparators for general purpose protection
• Integrated watchdog timer
Applications
• Solar power optimizer
• Solar power micro-inverter
• Solar charge controller
• Telecom power supply
FN8259 Rev 1.00
July 24, 2014
VIN +
PV MODULE
SENSE
3.3V
ISL1801
CONTROL
PROCESSOR AND/OR
COMMUNICATIONS
FIGURE 1. TYPICAL APPLICATION
VOUT +
VOUT -
Page 1 of 30


ISL1801 Datasheet
Recommendation ISL1801 Datasheet
Part ISL1801
Description sPMIC
Feature ISL1801; ISL1801 sPMIC for Micro Converter Bias and Drivers The ISL1801 is a power management IC (PMIC) optim.
Manufacture Renesas
Datasheet
Download ISL1801 Datasheet




Renesas ISL1801
ISL1801
Table of Contents
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
High Voltage 10V Bias Regulator VR1 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Low Voltage 3.3V Bias Regulator VR2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Driver Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
WatchDog Timer Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Current Sense Op amp Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Dual High-Speed Comparator Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Preload Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Test Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Summary of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Detailed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Dual Synchronous Buck Switching Regulators With Constant On Time Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Dual LDO Bias Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dual Low-Side MOSFET Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dual High-Speed Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Precision Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Preload Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
WatchDog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Power-Up Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power-Down Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Over-Temperature Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Overvoltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PC Board Layout Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Layout Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
FN8259 Rev 1.00
July 24, 2014
Page 2 of 30



Renesas ISL1801
ISL1801
Block Diagram
BRESET
BCMD
PVCC3
BDRIVE
PGND4
DRIVE3
PGND3
PWM3
PHASE3
OCSET3
PVCC3
PVCC3
ISEN
LATCHRPT
120µA
CMP2+
CMP2-
CMP1+
CMP1-
CMP1O
RPWM3
PGOOD2
GND
CMP2
CMP1
ENABLE
FF3
Q SET S
Q CLR R
ENABLE
FF2
CL
S SET Q
R CLR Q
ONE
SHOT
S SET Q
R CLR Q
FF1
7V
PVCC3
0.5*VDDREF
UVLO
LDO1
OC, OV,
OT, SS
LEVEL
SHIFT
PWM
Logic
VCC1
Q SET S
Q CLR R
PVCC3
LDO2
POR
VREF1
ON-TIME
CONTROL
FB2
GND
DELAY
VDDREF
VREF2*0.88
VREF2
-
+
ON-TIME
CONTROL
VCC5V
S SET Q
R CLR Q
PWM
Logic
VCC5V
SS, OC, OV, OT
VCC1
VIN1
AGND
BOOT1
PHASE1
PGND1
FB1
TON1
VCC5V
GND
TON2
BOOT2
VIN2
PHASE2
PGND2
AMPO
AMP-
AMP+
SGND
WDO WATCHDOG
VDDREF
PRE-LOAD
CONTROL
GND
FIGURE 2. ISL1801 BLOCK DIAGRAM
GND
WDI
TIMER
PRELOAD
FN8259 Rev 1.00
July 24, 2014
Page 3 of 30





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