IR21094STRPBF

Infineon IR21094STRPBF half-bridge gate driver with OCP, 600V, 200mA/350mA, SOIC-8

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Manufacturer Part：

IR21094STRPBF

Package：

SOIC-8

Description

Product Overview

The IR21094STRPBF is a high-voltage half-bridge gate driver IC from Infineon Technologies with integrated dead time and overcurrent protection. This 600V driver combines high-side and low-side drive channels in a single SOIC-8 package, designed for efficient and reliable power conversion applications.

Key Specifications

Manufacturer	Infineon Technologies
Device Type	Half-Bridge Gate Driver w/ OCP
V_OFFSET	600 V (max)
Output Current (Source/Sink)	200 mA / 350 mA (typ)
Supply Voltage Range	10 V to 20 V
UVLO Threshold	8.6 V (on) / 8.2 V (off)
Dead Time	520 ns (typ, internal)
Overcurrent Protection	Yes, fault output
Input Logic	CMOS / LSTTL compatible
Package	SOIC-8
Operating Temperature	-40°C to +125°C

Features

600V floating high-side channel (bootstrap)
Integrated overcurrent protection (FAULT output)
Internal dead time (520ns) prevents shoot-through
dV/dt and negative transient tolerant
Gate drive supply: 10V to 20V
Undervoltage lockout (UVLO)
CMOS Schmitt-trigger inputs
Matched propagation delay
RoHS compliant, compact SOIC-8

Applications

Motor drives and inverters
Switch-mode power supplies
Half-bridge resonant converters
UPS systems
Ballast and lighting control
Industrial power systems
DC-DC converters

Product Introduction:IR21094STRPBF Product Introduction

The IR21094STRPBF is a high-voltage half-bridge gate driver with integrated overcurrent protection from Infineon Technologies. This device provides a compact and reliable solution for driving N-channel power MOSFETs and IGBTs in half-bridge configurations, with the added benefit of built-in overcurrent protection with fault reporting. The floating high-side channel uses bootstrap operation and is rated for up to 600V offset voltage. Internal dead time of approximately 520ns ensures safe operation by preventing simultaneous conduction of both power switches. The device’s overcurrent protection feature monitors the voltage across the current sense element and triggers a fault condition when exceeded, providing system-level protection without additional components.

Working Principle:IR21094STRPBF Working Principle

The IR21094STRPBF operates as a half-bridge gate driver with integrated overcurrent protection. The LIN input controls both the high-side and low-side outputs with complementary switching and internal dead time. When LIN is high, the low-side output (LO) is high and the high-side output (HO) is low. When LIN goes low, after the dead time, LO goes low and HO goes high. The overcurrent protection works via the ITrip pin, which monitors a current sense resistor or diode drop. When the voltage at ITrip exceeds the threshold, the driver enters a fault state where both outputs are forced low, and the FLT pin goes low to indicate the fault condition. The fault auto-clears after a reset timeout period.

Pin Description:IR21094STRPBF Pin Definition and Functions

Pin Number	Pin Name	Function
1	VB	High-Side Floating Supply (Bootstrap)
2	HO	High-Side Gate Drive Output
3	VS	High-Side Floating Return
4	FLT	Fault Output (Open Drain, Active Low)
5	COM	Common / Ground
6	LO	Low-Side Gate Drive Output
7	VCC	Low-Side Power Supply (10-20V)
8	LIN	Logic Input