Toshiba Launches Five New MOSFET Gate Driver ICs to Help Miniaturize Mobile Electronic Devices

Toshiba Launches Five New MOSFET Gate Driver ICs to Help Miniaturize Mobile Electronic Devices

TCK42xG series supports external back-to-back MOSFETs

Shanghai, China, June 7, 2022 – Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today announced that it has added five new products to its TCK42xG Series of MOSFET gate driver ICs for mobile electronic devices such as wearable devices . The new products in the series are equipped with an overvoltage lockout function that controls the gate voltage of the external MOSFET according to the input voltage.

The new products include: "TCK420G" for 24V power lines; "TCK422G" and "TCK423G" for 12V power lines; "TCK424G" for 9V power lines; and "TCK425G" for 5V power lines. Together with the already launched "TCK421G" for 20V power lines, they form a complete product line.

With the launch of these five new products, the TCK42xG series now allows users to choose from two types of gate-source voltages, 10V and 5.6V, which covers more specifications of MOSFETs. With a variety of detection voltages for the input overvoltage lockout function, the product can be used for power supply lines from 5V to 24V. If used in conjunction with external back-to-back MOSFETs, they are also suitable for configuring load switch circuits with reverse current blocking functions (Figure 1) or power multiplexer circuits (Figure 2). In addition, its built-in charge pump circuit supports a wide input voltage range from 2.7V to 28V, so after intermittent operation, it can provide a stable voltage between the gate and source of the external back-to-back MOSFET-this method allows large current switching.

The TCK42xG is packaged in the WCSP6G[1] package, one of the smallest[2] package types in the industry , enabling high-density mounting for small devices such as wearables and smartphones, thereby reducing their size.

In addition, Toshiba has developed a power multiplexer circuit reference design, a power multiplexer reference design example that utilizes the capabilities of the TCK42xG. This design example was released today on Toshiba’s website.

Figure 1: Load switch circuit (single high-side, back-to-back)

Figure 2: Power multiplexer circuit

Figure 3: Power multiplexer board

application:

- Wearable devices

-Smartphone ​

- Laptops, tablets

- Storage devices, etc.

characteristic:

-Built- in charge pump circuit, gate-source voltage setting (5.6V, 10V) depends on input voltage

-Overvoltage lockout supports 5V to 24V

- Low input shutdown current: IQ(OFF) = 0.5μA (max) @ VIN = 5V

Key specifications:

Note:

[1] 1.2mm×0.8mm chip-scale package

[2] Among MOSFET gate driver ICs, Toshiba survey as of June 2022.

[3] Products that have been released