Datasheet > ISL81807

ISL81807

更新时间： 2024-11-05 14:55:55

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
41页	1000K
描述
80V Dual or 2-Phase Synchronous Boost Controller Optimized to Drive E-mode GaN FET

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ISL81807 数据手册

Datasheet

ISL81807

80V Dual Synchronous Boost Controller Optimized to Drive E-mode GaN FET

The ISL81807 is a dual synchronous boost controller

that generates two independent outputs or one output

with two interleaved phases for a wide variety of

applications in industrial and general-purpose

segments. With a wide input and output voltage

ranges, the controller is suitable for

Features

▪ Wide input voltage range: 4.5V to 80V

▪ Wide output voltage range: 5V to 80V

▪ Gate drive voltage: 5.3V

▪ Four FET drivers

telecommunication, data center, and computing

applications.

▪ Constant output voltage and output current

feedback loop control

The ISL81807 provides a gate driver voltage of 5.3V.

With its small dead time setting, it is a perfect

controller for the E-mode GaN FET devices.

▪ Light-load efficiency enhancement

• Low ripple diode emulation and burst mode

operation

The ISL81807 uses peak current mode control with

phase interleaving for the two outputs. Each output

has a voltage regulator, current monitor, and average

current regulator to provide independent average

voltage and current control. The internal

Phase-Locked Loop (PLL) oscillator assures an

accurate frequency setting from 100kHz to 2MHz, and

the oscillator can be synchronized to an external

clock signal for frequency synchronization and phase

interleave paralleling applications. This PLL circuit

can output a phase-shift-programmable clock signal

that is used for multi-phase cascade synchronization

with required interleaving phase shift.

▪ Programmable soft-start

▪ Supports startup into pre-biased rails

▪ Programmable frequency: 100kHz to 2MHz

▪ Support current sharing with cascade phase

interleaving

▪ External clock sync

▪ Clock out with accurate phase angle controlled by

PLL or frequency dithering

▪ PGOOD indicator

▪ Input current monitor

▪ Selectable mode between PWM/DE/Burst

▪ Accurate EN/UVLO threshold: ±2%

▪ Low shutdown current: 5µA

The ISL81807 features programmable soft-start and

accurate threshold enable functions along with a

power-good indicator to simplify power supply rail

sequencing. It also provides full protection features

such as OVP, UVP, OTP, and average and peak

current limit on both outputs to ensure high reliability.

▪ Complete protection: OCP (pulse by pulse and

optional hiccup or constant current mode), OVP,

OTP, and UVP

Applications

The IC is packaged in a space conscious 32 Ld

5mm×5mm TQFN. The package uses an EPAD to

improve thermal performance and noise immunity.

The full feature design with low pin count makes the

ISL81807 an ideal solution for quick time to market

simple power supply designs.

▪ Telecommunication

▪ Server and data center

▪ Automotive electronics

▪ Industrial equipment

▪ Power system

R16DS0186EU0100 Rev.1.00

Mar 22, 2022

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