Toshiba Launches Low-Input Current Drive, Rail-to-Rail Output, Gate-Drive Photocouplers

Low-height package products allow bufferless direct drive of low-to-medium-power IGBTs and MOSFETs from microcontrollers

TOKYO — (BUSINESS WIRE) — August 25, 2016Toshiba Corporation’s (TOKYO: 6502) Storage & Electronic Devices Solutions Company today announced the launch of a series of low-input current drive, rail-to-rail output, gate-drive photocouplers in a low-height package that allows bufferless direct drive of low- to medium-power IGBTs and MOSFETs from microcontrollers. Shipments of the three new products; “TLP5771”, “TLP5772” and “TLP5774” start from today.

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Toshiba: Low-input Current Drive, Rail-to-Rail Output, Gate-drive Photocoupler (Photo: Business Wire ...

Toshiba: Low-input Current Drive, Rail-to-Rail Output, Gate-drive Photocoupler (Photo: Business Wire)

With a threshold input current of 2mA (max), half the 4mA (max) of Toshiba’s existing products[1], the new photocouplers allow bufferless direct drive of low- to medium-power IGBTs and MOSFETs from microcontrollers. The new line-up is available in three levels of peak output currents, 1A, 2.5A and 4A, ensuring they meet a wide range of user requirements.

The new photocouplers have rail-to-rail output and also reduces the operation voltage to 10V (min) against the 15V (min) of Toshiba’s existing products[1], which can contribute to higher system efficiency and lower power consumption. Furthermore, the 2.3mm low-height SO6L package can contribute to the development of thinner and smaller systems. Main applications include servo amplifiers, small motor drivers, general-purpose inverters, photovoltaic (PV) inverters and industrial sewing machines.


Main Specifications

(Isolation Voltage, Common-mode Transient Immunity: @Ta = 25 degrees Celsius,

Other Specs: @Ta = -40 to 110 degrees Celsius)

Part Number   TLP5771   TLP5772   TLP5774
Package SO6L
Peak Output Current ±1.0 A ±2.5 A ±4.0 A
Operation Voltage Range 10 to 30 V
Threshold Input Current 2 mA (max)
Supply Current 3 mA (max)
Propagation Delay Time 150 ns (max)
Propagation Delay Skew 80 ns (max)
Rail-to-Rail output Equipped
UVLO Function Equipped
Creepage / Clearance Distance 8 mm (min)
Isolation Voltage 5,000 Vrms (min)

Common-mode Transient

±35 kV/μs (min)
Operation Temperature Range -40 to 110 degrees Celsius

Examples of Applicable Power


Small-scale IGBTs
(up to 20 A) and


Mid-scale IGBTs
(up to 80 A) and


Mid-scale IGBTs (up to 100 A)


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