TC4432COA

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TC4432COA is a part of the PMIC – Gate Drivers product family. It is an integrated driver for small and medium-power MOSFETs and MOSFETs, designed for operation in switching power supplies and digital power systems. The device can be used in applications such as DC-DC converters, solenoid, relays, and motor drive.

The TC4432COA offers high peak output current (up to 1.75A) and adjustable deadtime (up to 150ns) while being very small in size (<2mm by 0.6mm). It also features a built-in anode clamp diode and an operating temperature of -40°C to 85°C. The device is also very low in power consumption, with a quiescent supply current of 10µA.

The TC4432COA has a typical propagation delay time of around 5ns. It also offers protection from undervoltage, overtemperature and overvoltage conditions. The TC4432COA is available in both a 5-pin SOT23-5 and a 6-pin SOT23-6 package.

The working principle of the TC4432COA follows the traditional boost-drive configuration. The device has two inputs: an enable (EN) pin and a gate-drive output pin (GDO), and one output, the gate-drive output. The gate-drive output is a switch that turns on when the EN pin is driven high, and off when the EN pin is driven low.

When the EN pin is driven high, the gate-drive output is pulled high to the supply voltage VCC. This drives the MOSFET’s gate voltage to the threshold voltage, turning it on. When the EN pin is driven low, the gate-drive output is pulled low to ground, turning the MOSFET off. The device is also able to adjust the deadtime between the positive and negative pulses, allowing the user to control the turn-on and turn-off times of the MOSFET.

Other features of the TC4432COA include adjustable rise and fall times, adjustable peak current, and an adjustable current limit. It also has an open-drain active-low output to indicate a fault condition. It has a logic threshold of 0.8V, so it can be used with logic signals of 3.3-15V.

The TC4432COA is a very versatile device with a wide variety of applications. It is great for cost sensitive applications such as DC-DC converters, motor drivers, general switching, and SMPS applications.

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