Powerex Introduces Hybrid Integrated Circuit With Built-in DC-DC Converter for Driving IGBT Modules. The M57161L-01 is a hybrid integrated circuit designed for driving Powerex F-Series (trench gate) IGBT modules. This gate driver converts logic level control signals into high current gate drive with suitable on and off bias voltages. Electrical isolation of the input control signal is provided by an integrated high-speed optocoupler. A built-in isolated DC-DC converter supplies gate drive power. The M57161L-01 has short-circuit and undervoltage protection and provides a fault status feedback signal. The M57161L-01 features a high output current (+) 7A peak and an isolated DC-DC converter, providing +15.5V/-5V drive. The M57161L-01 was designed as a gate drive for IGBT modules with internal RTC, Real Time Control, circuit in motor drive, UPS, welder, etc. It is recommended for use with Powerex 600V and 1200V F-Series IGBT modules. Powerex F-Series (trench gate) IGBT modules have a built-in RTC, which limits short-circuit current and maintains a 10_s short-circuit withstanding capability. The RTC circuit limits the current by actively reducing the gate voltage when excessive collector current is present. The M57161L-01 gate driver uses a gate voltage detection circuit to sense the activation of the RTC circuit inside the F-Series IGBT module. The protection provided by the M57161L-01 is superior to conventional desaturation detection, because it avoids the need for a high voltage detection diode and reduces spacing requirements on the gate drive printed circuit board. In addition, noise immunity is improved, because the driver is not connected to the high voltage on the IGBTýs collector. Samples of the M57161L-01 are available from stock for $33 each. Call Powerex at 724-925-7272 or 1-800-451-1415 to locate your nearest sales office. For more information on other Powerex products, log on to the Powerex web site at www.pwrx.com.

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