Toshiba unveils its first 30V N-channel common-drain MOSFET

Toshiba Electronics Europe has launched its first 30V N-channel common-drain MOSFET, the SSM10N961L. It offers low-loss operation and is specifically intended for use within devices with USB interfaces but it may also be used for protecting battery packs in mobile applications.

The USB Power Delivery (USB PD) standard supports higher power levels from 15W (5V / 3A) to a maximum of 240W (48V / 5A) and allows swapping of the power supply and receiving side. The SSM10N961L N-channel common drain MOSFET has been designed to support bi-directional power in devices with USB charging.

Until the introduction of the SSM10N961L, Toshiba’s N-channel common-drain MOSFETs have been 12V products primarily intended for the protection of lithium-ion (Li-ion) battery packs within smartphones. This 30V product can be used for applications requiring voltages higher than 12V such as load switching for power lines of USB charging devices and the protection of Li-ion battery packs for battery powered appliances.

The SSM10N961L combines two N-channels in a common drain configuration which allows for bi-directional operation. The source-source breakdown voltage (V(BR)SSS) is 30V for use in higher voltage applications such as those found in laptops and tablets. To reduce losses in all applications, the source-source on-resistance or RSS(on) is typically 9.9mOhm.

When mounted on a 18 micron, 407mm2 Cu pad, the current rating of the device is 9.0A. If the pad size and thickness are increased to 70 micron and 687.5mm2, the current rating increases to 14.0A.

The SSM10N961L is housed in a small thin package (TCSPAG-341501) and measures just 3.37 x 1.47 x 0.11mm.

By combining the new device with a TCK42xG driver IC it is possible to form a load switching circuit with a backflow prevention function or a power multiplexer circuit that can switch operations between make-before-break (MBB) and break-before-make (BBM).

Toshiba has released a power multiplexer circuit as a reference design based on the TCK42xG driver IC and the SSM10N961L.

Shipments of the SSM10N961L start today.

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