Photovoltaic output photocoupler for gating high-voltage power MOSFETs

Toshiba is in volume production of a photovoltaic output photocoupler with an enhanced open-circuit voltage suitable for gating high-voltage power MOSFETs commonly used in solid-state relays (SSRs).

The TLX9910 photocoupler is primarily intended for use within SSR applications in automotive. However, it can equally be used in industrial applications, such as renewable energy.

This combination enables high-voltage, high-current switching, which is difficult to achieve with integrated photorelays.

The TLX9910 offers an open voltage (V_OC) of 13.5V – nearly double that of existing devices. Thereby, the choice of compatible MOSFETs (without a workaround) is significantly increased. Using a single device reduces the component count, thereby reducing the size, weight and cost of the solution.

As the photovoltaic coupler is based upon photodiode arrays (PDA), electrical energy is generated as a result of light from the input side LED. The coupler therefore serves its own power supply, eliminating the need for an external power source.

The TLX9910 is housed in a surface-mount 4-pin SO6 package measuring just 3.7mm × 7.0mm x 2.1mm. It is capable of operating at temperatures in the range -40C to +125C and offers 3750V_rms of isolation from input to

Find out more about new photovoltaic output photocoupler here: https://toshiba.semicon-storage.com/eu/semiconductor/product/isolators-solid-state-relays/detail.TLX9910.html