ISL8115

Overview

The ISL8115 is a synchronous buck PWM controller with current sharing capability. The current sharing function allows multiple modules to be connected in parallel to achieve higher output current and to reduce input and output ripple current, resulting in fewer components and reduced output dissipation. Utilizing voltage-mode control with input voltage feed-forward compensation, the ISL8115 maintains a constant loop gain for optimal transient response, especially for applications with a wide input voltage range. The ISL8115 protects against overcurrent conditions by inhibiting the PWM operation while monitoring the current with DCR of the output inductor, or a precision resistor. It also has a pre-POR overvoltage protection option, which provides some protection to the load if the upper MOSFET(s) is shorted. The ISL8115 features remote ground sensing, programmable input voltage UVLO, output under/overvoltage protection, power-good indication, and fault Hand Shake capability.

Wide V_IN range operation: 2.97V to 36V; up to 5.5V output and 30A load current per phase
Fast transient response
Voltage-mode PWM leading-edge modulation with non-linear control
Input voltage feed-forward
Integrated 5V high speed 4A MOSFET gate drivers
Internal bootstrap diode
Excellent output voltage regulation
0.6V ±1.0% internal reference (-40°C ~ 125°C)
0.6V ±0.7% internal reference (-40°C ~ 105°C)
Differential voltage sensing
Excellent current balancing and overcurrent protection
Peak and average overcurrent protection
Output current monitor on the ISET pin
Oscillator programmable from 150kHz to 1.5MHz
Frequency synchronization to external clock signal
Diode emulation mode for light load efficiency improvement
Power-good open drain output
Pre-bias start-up function
Output OVP, UVP; OTP
Adjustable Soft-Start

Power supply for datacom/telecom and POL
Wide input voltage range buck regulators
High current density power supplies RF power amplifier bias
compensation

Documentation


Type	Title	Date
Datasheet	ISL8115 Datasheet PDF 1.41 MB	Jul 12, 2013
Product Change Notice	PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products PDF 326 KB	May 21, 2021
Guide	ISL8115DEMO1Z User Guide PDF 1.43 MB	Aug 15, 2013
Manual - Development Tools	ISL8115EVAL2Z User Guide PDF 908 KB	Aug 15, 2013
Guide	ISL8115EVAL1Z User Guide PDF 910 KB	Aug 14, 2013
Application Note	AN1681: Grounding Techniques PDF 509 KB	Jan 19, 2004
Application Note	AN1684: Nonideality of Ground PDF 397 KB	Jan 19, 2004
7 items

Design & Development

Software Downloads


Type	Title	Date
PCB Design Files	ISL8115DEMO1Z Design Files ZIP 762 KB	Nov 17, 2017
PCB Design Files	ISL8115EVAL1Z Design Files ZIP 967 KB	Nov 17, 2017
PCB Design Files	ISL8115EVAL2Z Design Files ZIP 934 KB	Nov 17, 2017
3 items

ISL8115DEMO1Z

Demonstration

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High Voltage Synchronous Buck PWM Controller with Integrated Gate Driver Demonstration Board

The ISL8115DEMO1Z is a compact reference design synchronous buck converter (28.19mm x 16.89mm) for implementing Renesas' ISL8115 wide input range PWM controller....

Featured Documents:

ISL8115DEMO1Z User Guide

ISL8115EVAL1Z

Evaluation

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Synchronous Buck Converter Evaluation Board

The ISL8115EVAL1Z is a synchronous buck converter evaluation board that is used to implement Renesas' ISL8115 wide input range pulse width modulation (PWM) controller....

Featured Documents:

ISL8115EVAL1Z User Guide

ISL8115EVAL2Z

Evaluation

Learn More

Synchronous Buck Converter Evaluation Board

The ISL8115EVAL2Z is a synchronous buck converter evaluation board that is used to implement Renesas' ISL8115 wide input range pulse width modulation (PWM) controller....

Featured Documents:

ISL8115EVAL2Z User Guide

ECAD Models

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Processing table

	Pkg. Type	Carrier Type	MOQ	Buy / Sample
(2) Obsolete / NRND / LTB	TQFN	Reel Tube	Maximum Minimum order quantity. Minimum Minimum order quantity.	Buy / Quote
Part Number	Logical Operator	Logical Operator		Logical Operator
ISL8115FRTZ circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	TQFN	Tube	1500	Buy / Quote
ISL8115FRTZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	TQFN	Reel	6000	Buy / Quote

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High Voltage Synchronous Buck PWM Controller with Integrated Gate Driver and Current Sharing Capability

Overview

Documentation