TLP350H(F)

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Gate drivers are the interface between a gate-level control circuit and a power circuit. Isolators, such as the TLP350H(F) model, are able to connect these two circuits without them being electrically interconnected. This elimination of potential contact arcs allows the circuit to operate safely and efficiently.

TLP350H(F), manufactured by Toshiba, is a kind of optocoupler-isolated MOSFET gate driver. It features high-speed, high-efficiency, and low-power supply operation with an isolation voltage (VCEO) rating of 2500Vrms. It is specifically designed for driving insulated gate bipolar transistors (IGBTs) in motor control systems, inverters, AC-DC and DC-AC power supplies, and other industrial applications.

The TLP350H(F) is composed of an optocoupler, a driver IC, and a power supply section whose driver section contains two output channels dedicated to the gate side. It includes an over-current protection circuit that prevents secondary side damage in the event of a short circuit between the primary side and transistor gate.

The working principle of the TLP350H(F) involves transforming inputs from the control circuit into logic-level signals of the gate-level control circuit. The optical wave shield integrated into the optocoupler provides insulation between the primary and secondary sides. Power flows from the side of the power device (IGBT) to the control circuit and is transferred via the optocoupler to the driver IC, which is then converted into an enabling current for the Igbt.

The TLP350H(F) offers various advantages, including a wide input voltage range of 3.2 to 11V and excellent noise immunity with an EMI filter. It is designed to meet the functional safety requirements of IEC61010-1. It is also highly reliable and secure to use, as it contains overcurrent protection circuitry for short-circuiting protection and short-circuiting fault status defaults for monitoring and detection. Furthermore, it reduces EMI emissions by effectively reducing the gate resistance for IGBTs.

The TLP350H(F) is the ideal solution for motor control systems, inverters, AC-DC and DC-AC power supplies, and other industrial applications due to its flexibility, efficiency, and high reliability. This gate driver can provide the necessary high-resolution electrical isolation between the gate-level controller and the IGBT, allowing for safe and effective operation.

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