MOSFET gate driver family for portable applications
Toshiba Electronics Europe GmbH has added five new MOSFET gate-driver ICs in the TCK42xG series, suitable for a wide range of applications including battery powered, consumer and industrial equipment. The devices in this series control the applied gate voltage independent of the input voltage and feature an over-voltage lockout function to protect the circuit.
Products in the series can be selected for a gate-source voltage of 10 V or 5.6 V, allowing use with a wide variety of MOSFETs. A choice of detection voltages for the input over-voltage lockout allows them to operate from power lines from 5 V to 24 V. The drivers available are the TCK420G for 24-V power lines, TCK422G and TCK423G for 12-V, TCK424G for 9-V, and TCK425G for 5-V.
Each new driver in the series features a built-in charge pump that ensures a stable gate-source voltage at the external MOSFET while the input can vary from 2.7 V to 28 V. This allows large currents to be switched. In addition, when used to control two N-channel MOSFETs connected back-to-back, they are suitable for configuring load-switch or power-multiplexer circuits with reverse-current blocking.
Housed in a 1.2- x 0.8-mm WCSP6G package, one of the smallest in the industry, Toshiba’s TCK42xG gate drivers have a tiny footprint that allows high-density mounting in space-constrained portable products. They also have a low input OFF current, IQ (OFF), of 0.5 μA (maximum, at VIN of 5-V) that helps to prolong battery runtime.
To further assist customers’ projects, Toshiba has developed the Power Multiplexer Circuit Reference Design, which provides a design example for power multiplexers that utilize the functions of TCK42xG.
https://toshiba.semicon-storage.com/eu
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