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Designing Overcurrent protection for TPL7407L Peripheral Driver


Microcontroller units (MCUs) are generally limited with lower drive on the I/Os. Most of the applications requiring MCU boards to drive high-current loads need discrete implementation and additional components, which use a lot of board space. This board space is called a peripheral driver section. The TPL7407L device is an integrated peripheral driver with seven channel drivers inside. The TPL7407L device is a higher performance version of popular ULN2003 drivers. The TPL7407L device does not have overcurrent protection. For markets such as industrial and automotive, short and overcurrent protection features are imperative for a device. This application report shows some examples of designing with the TPL7407L device for high-current applications, including the overcurrent protection for the circuit without the use of external current sense.