Texas Instruments Corporation

Sachin Sethumadhavan

Ganapathi Shankar Krishnamurthy

Sayantan Gupta

A driver system operable to supply a drive signal to a motor includes a system input adapted to be coupled to an input voltage and a system output adapted to be coupled to the motor. The driver system includes a high-side transistor which has a first terminal coupled to the system input, a second terminal coupled to the system output, and has a control terminal. The driver system includes a low-side transistor which has a first terminal coupled to the system output, a second terminal coupled to a reference potential terminal, and has a control terminal. The driver system includes a low-side gate control circuit which provides a first level current responsive to a low-side digital control signal transitioning from a low state to a high state and provides a second level current if the output voltage is less than an upper reference voltage.

Systems and methods for reduction of induced ground bounce voltage in motor drivers

An example circuit includes a supply comparator having a supply input, a supply reference input and a supply comparator output. The supply input is coupled to a supply input terminal, and the supply reference input is configured to receive a supply reference voltage. A controller has a comparator input, a high-side output and a low-side output. The comparator input is coupled to the supply comparator output. A high-side switch having a control input. The high-side switch is coupled between the supply input and a switch output terminal, and the high-side output is coupled to the control input of the high-side switch. A low-side switch has a control input. The low-side switch is coupled between the switch output terminal and a ground terminal, and the low-side output is coupled to the control input of the low-side switch.

Power converters with reduced ripple voltage

A driver circuit includes a high side transistor, a low side transistor, a first trigger circuit, and a second trigger circuit. The high side transistor has a first control terminal and a first current path coupled between a first voltage terminal and an output voltage terminal. The low side transistor has a second control terminal and a second current path coupled between the output voltage terminal and ground. The first trigger circuit is coupled to the first control terminal, the first voltage terminal, and the output voltage terminal. The first trigger circuit is operable to protect the high side transistor. The second trigger circuit is coupled to the second control terminal, the first trigger circuit, and ground. The second trigger circuit is operable to protect the low side transistor.

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Bengaluru, India

Sachin Sethumadhavan