TPS2836D

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PMIC - Gate Drivers: TPS2836D Application Field and Working Principle

Gate drivers are an integral part of power management integrated circuits (PMICs), used to control transistors, which control electrical current in power circuits. The TPS2836D from Texas Instruments is a high-speed, high-efficiency gate driver designed to drive maximum power-transistor loads. This article looks at the application field and working principle of the TPS2836D.

Application Fields

The TPS2836D is designed to drive MOSFETs and other power transistors at voltages up to 600 V. It is particularly useful for driving high-voltage loads with a large current (up to 11 A peak) while still having a small form factor. It can be used in a range of applications, including high-end automotive systems, industrial automation, power-train control, and battery-management systems.

Thanks to its wide operating voltage range, the TPS2836D can be used in both low-voltage (24 V to 48 V) and high-voltage (60 V to 600 V) applications. It is also suitable for a variety of power-supply architectures, such as buck, boost, and buck-boost converters. Finally, the TPS2836D has a wide operating temperature range, from -40°C to +150°C.

Working Principle

The TPS2836D is built on a single-channel architecture that draws its power from a logic supply voltage of up to 5.5 V. Its output-to-input operating voltage is 6 V or greater, allowing for higher efficiency when driving high-voltage MOSFETs. The driver features an innovative adaptive-biasing technology that automatically adjusts the gate-drive bias current for optimal performance, regardless of load or temperature.

The TPS2836D also features a spread-spectrum frequency modulator that allows for single-pulse overvoltage mitigation. This improves the gate-drive transient response and reduces circuit-noise emissions. Additionally, the driver is designed to detect a loss of synchronisation (LOS) when the logic supply voltage drops below 4 V, indicating a fault in the control electronics. The device\'s error flags can be used to initiate a fault-handling routine in the system.

Conclusion

The TPS2836D is an advanced gate driver designed to drive high-voltage MOSFETs in a variety of applications. It features an adaptive-biasing technology and a spread-spectrum frequency modulator, which improve its performance and reduce circuit-noise emissions. Additionally, the device is designed to detect a loss of synchronisation, allowing for the implementation of a fault-handling routine.

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