Datasheet > ISL78420

ISL78420

更新时间： 2024-11-30 14:58:07

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
19页	1042K
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

DATASHEET

ISL78420

FN8296

Rev 4.00

September 29, 2016

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

Dead-Time

The ISL78420 is a 100V, 2A high frequency half-bridge NMOS

Features

FET driver with a tri-level PWM input. With an operating supply

• 114VDC bootstrap supply maximum voltage

range of 8V to 14V and integrated high-side bootstrap bias, it

supports driving the high-side and low-side NMOS in 100V half-

bridge applications.

• 2A source and sink driver for 100V half-bridge NMOS FETs

• Programmable dead-time prevents shoot-through;

adjustable from 35ns to 220ns with a single resistor

This driver is designed to work in conjunction with the

ISL78220 and ISL78225 “Multi-Phase Interleaved Boost PWM

Controller” and the ISL78226 “6-Phase 12V/48V Bidirectional

Synchronous PWM Controller”. It can also be used in

• Unique tri-level PWM input logic enables phase shedding

when using multiphase PWM controllers (e.g.

ISL78220/225/226)

applications where a standard half-bridge driver is needed.

• On-chip 1Ω (dynamic) bootstrap diode

• 10ns rise and fall times with 1000pF load

• 8V to 14V operating voltage range

This driver has a programmable dead-time to ensure

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

side MOSFET. A resistor is used to set the dead-time from 35ns

to 220ns.

• V and Boostrap supply Undervoltage Lockout (UVLO)

The PWM pin’s tri-level input allows control of the high-side

and low-side drivers with a single pin. When the PWM input is

at logic high, the high-side bridge FET is turned on and the low-

side FET is off. When the input is at logic low, the low-side

bridge FET is turned on and the high-side FET is turned off.

When the input voltage is in mid-level state, both the high and

low-side bridge FETs are turned off. The enable pin (EN), when

low, also turns both bridge FETs off. This EN input can be used

when the controller driving the ISL78420 does not utilize a tri-

• 14 Ld HTSSOP package compliant with 100V conductor

spacing guidelines per IPC-2221

• AEC-Q100 qualified

Applications

• Automotive applications

• 12V/48V bi-directional converter (ISL78226)

• Multiphase boost (ISL78220/225)

• Class-D amplifiers

level output. Both PWM and EN logic inputs are V tolerant.

The ISL78420 is offered in a 14 Ld HTSSOP package and

complies with 100V conductor spacing per IPC-2221. The

device is Automotive AEC-Q100 qualified for the temperature

range of -40°C to +125°C.

Related Literature

• For a full list of related documents, visit our web page

- ISL78420 product page

320

240

200

160

140

120

100

48V

12V

T = -40°C

T = +125°C

PWM

VDD

RDT

VSS

ISL78420

T = +85°C

PWM1

PWM2

PWM3

PWM4

PWM5

PWM6

ISL78226

6‐Phase

DC‐DC

T = +25°C

PHASE #1

PHASE#2

PHASE#3

PHASE #4

PHASE#5

PHASE #6

Controller

T = -40°C to +125°C

RESISTOR ON RDT PIN (kΩ

40 48 56 64 72 80

)

FIGURE 1. NMOS DRIVER FOR 6-PHASE BIDIRECTIONAL BUCK AND

BOOST CONVERTER

FIGURE 2. DEAD-TIME vs TIMING RESISTOR

FN8296 Rev 4.00

Page 1 of 19

September 29, 2016

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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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