IRMD2336DJ

www.irf.com

© 2008 International Rectifier

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Figure 2: Picture of IRMD2336DJ Reference Design

IRS2336DJ Gate Driver IC

The IRS2336DJ IC integrates three independent half bridge drivers with shoot through protection and internal

dead-time insertion. Proprietary HVIC technology enables ruggedized monolithic construction with logic inputs

compatible with CMOS or LSTTL levels as low as 3.3 V. The output drivers feature a high pulse current buffer

stage designed for minimum driver cross-conduction. Propagation delays are matched to simplify use in high

frequency applications. The floating channel can be used to drive N-channel power MOSFETs or IGBTs in the

high side configuration, which operates up to 600V. The IC is based on “Active Low” input logic i.e. a logic HIGH

input turns OFF the corresponding output and vice versa. In addition to VSS pin, the IC features a COM pin to

provide a dedicated, low impedance return path for the low side gate driver which also serves to shunt the high-

frequency gate drive currents away from the current sense resistor thus preventing false trips. A host of protection

functions such as UVLO for VCC & VBS supplies and motor current trip along with integrated fault diagnostics are

also offered in IRS2336DJ I. An open-drain FAULT signal is provided to indicate that an over-current or a VCC

under-voltage shutdown has occurred. Fault conditions are cleared automatically after a delay programmed

externally via an RC network connected to the RCIN input. An enable function is available to terminate all six

outputs simultaneously.

Figure 3: IRS2336DJ Application Diagram

Input Stage

Power Inverter

Gate Driver Circuitry

Connector for external PWM drive

DC-DC Converter

Control

Circuitry

Input Stage

Power Inverter

Gate Driver Circuitry

Connector for external PWM drive

DC-DC Converter

Control

Circuitry