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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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재고 확인 및 구매

Insulated gate driver expands the freedom of inverter drive circuit design

Simplified timing design with built-in protective functions and 2-channel output

As a power element gate driver for various inverters such as industrial inverters, UPSs, and power conditioners for photovoltaic power generation, we have provided a wide range of TLP350. In a medium-to-high power system using this TLP350, buffer transistors were placed in front of the gates of IGBT/MOSFET, and the buffer-driven analogue timing designs were overloaded. In addition, the protection circuits for the power elements had to be designed individually.

The new-product TLP5231 released to reduce the burden of these designs has the following features.

  • Buffer MOSFET and soft turn-off MOSFET are externally configured to simplify timing-design.
  • Microcomputer design is easy because restart from abnormal interruption is automatic
  • It can be operated simply by adjusting the external MOSFET according to the capacitance of the power elements, and can be platformized in basic circuit designing deployment.
  • The fault signal is fed back when the power supply voltage is abnormal (UVLO [Note 1]) and when an overcurrent is detected.
  • The soft turn-off function from overcurrent detection allows power device to be shut off more softly than normal off operation.
  • Prevents breakdown of power elements by suppressing surge voltage rises that occur during abnormal shut-off

As described above, there is a merit of reducing the burden on the designer, so please be sure to consider TLP5231 when miniaturizing/enhancing the functionality including the gate driver peripheral circuits.

[Note1]UVLO:Under Voltage Lock Out

Comparison of “Simple Gate Pre-driver” and “Protective function Gate pre-driver”

Here is the function comparison of TLP5231 and TLP350 introduced above.

Part number

Protective function Gate pre-driver

Stock Checking

Simple Gate pre-driver







Output current rating(max)

2.5 A (Ta = -40℃ to 110℃)

2.5 A (Ta = -40℃ to 100℃)

Isolation voltage (min)

5000 Vrms

3750 Vrms

Common mode transient immunity (min)

±25 kV/µs

±15 kV/µs




Overcurrent detection


Soft turn-off


FAULT signal output

(at UVLO and Overcurrent)


IGBT drive circuit

Here is the comparison of IGBT drive circuit of TLP5231 and TLP350 introduced above.


Protective function Gate pre-driver TLP5231

  • Output terminal: 2 channel
  • Controlling complementally
  • N-ch/P-ch buffer MOSFETs individually

Simple Gate pre-driver TLP350

  • Output terminal: 1 channel
  • Controlling complementally
  • NPN/PNP buffer transistors  by one output

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