Datasheet > ISL78420

ISL78420

更新时间： 2024-11-29 11:59:07

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器
页数	文件大小	规格书
16页	373K
描述
100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time

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ISL78420 数据手册

100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM

Input and Adjustable Dead-Time

ISL78420

Features

The ISL78420 is a 100V, high frequency, half-bridge MOSFET

driver with a tri-level PWM input. This part is a derivative of the

HIP2121 half-bridge driver. The non-automotive version of the

ISL78420 is the HIP2124.

• Programmable break-before-make dead-time prevents

shoot-through and is adjustable up to 220ns

• Bootstrap supply maximum voltage to 114VDC

• Wide supply voltage range (8V to 14V)

• Supply undervoltage protection

This driver is designed to work in conjunction with the ISL78220,

“6-Phase Interleaved Boost PWM Controller with Light Load

Efficiency Enhancement”. Equally, it can be used in most

applications where a half-bridge driver is used.

• On-chip 1Ω bootstrap diode

• Unique tri-level PWM input logic enables phase shedding when

using multi-phase PWM controllers (e.g. ISL78220/225)

This driver has a programmable dead-time to ensure

break-before-make operation between the high-side and low-side

drivers. A resistor is used to adjust the dead-time up to 220ns.

• 9 Ld TDFN “B” package compliant with 100V conductor

spacing guidelines per IPC-2221

• AEC-Q100 Qualified

The tri-level input allows the PWM input to also function as a

disable input. When the PWM input is a logic high, the high-side

bridge FET is turned on and the low-side FET is off. When the

input is a logic low, the low-side bridge FET is turned on and the

high-side FET is turned off. When the input voltage is midrange,

both the high and low-side bridge FETs are turned off.

Applications

• Automotive applications

• Multi-phase boost (ISL78220/225)

• Half-bridge DC/DC converter

• Class-D amplifiers

The enable pin (EN), when low, drives both outputs to a low state.

This input is used when the controller does not utilize a tri-state

• Forward converter with active clamp

output. All logic inputs are V tolerant.

Related Literature

• FN7668 HIP2120, HIP2121 “100V, 2A Peak, High Frequency

Half-Bridge Drivers with Adjustable Dead Time Control and

PWM Input”

Two package options are provided. The 10 Ld 4x4 DFN package

has standard pinouts. The 9 Ld 4x4 DFN package omits pin 2 to

comply with 100V conductor spacing per IPC-2221.

• FN8363 HIP2124, “100V, 2A Peak, Half Bridge Driver with

Tri-level Input and Adjustable Dead Time” (non-automotive)

• FN7688 ISL78220, “6-Phase Interleaved Boost PWM

Controller with Light Load Efficiency Enhancement”

• FN7909 ISL78225, “4-Phase Interleaved Boost PWM

Controller with Light Load Efficiency Enhancement”

200

160

140

120

100

100V MAX

ISL78420

HALF BRIDGE

VDD

PWM

SECONDARY

CIRCUITS

PWM

CONTROLLER

RDT

VSS

FEEDBACK

WITH

ISOLATION

EPAD

32 40 48 56 64 80

(kΩ)

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. DEAD-TIME vs TIMING RESISTOR

September 24, 2012

FN8296.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

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与ISL78420相关器件

型号	品牌	获取价格	描述	数据表
ISL78420ARTAZ	INTERSIL	获取价格	100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420ARTBZ	INTERSIL	获取价格	100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420ARTBZ-T	INTERSIL	获取价格	100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420AVEZ	INTERSIL	获取价格	100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78424	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78424AVEZ	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78424AVEZ-T	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78424AVEZ-T7A	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78434	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78434AVEZ	RENESAS	获取价格	100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro

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