Texas Instruments Corporation

Karthik Anyam

Mayank Jain

Preetam Charan Anand Tadeparthy

Preetam Tadeparthy

Dattatreya Baragur Suryanarayana

Vishal Shaw

Charan Hemanth Kumar

An example apparatus includes: a phase circuit configured to receive a pulse of a pulse width module (PWM) signal; provide, after receiving the pulse, an output voltage to a load; exhibit a fault; in response to the fault corresponding to a first category, transmit a first code voltage in a current sense (CS) signal; in response to the fault corresponding to a second category, transmit a reference voltage in the CS signal; receive, after transmission of the reference voltage, a tristate voltage in the PWM signal; and transmit, after receiving the tristate voltage, a second code voltage in the CS signal based on a type of the fault and the second category.

Methods and apparatus to detect and diagnose faults in buck regulators

One example includes a VID signal decoder circuit. The circuit includes a coarse resolution decoder that receives a VID signal. The VID signal can be encoded with a digital value of an output voltage. The coarse resolution decoder can decode the VID signal to generate a first digital signal. The circuit also includes a fine resolution decoder that receives the VID signal and to decode the VID signal to generate a second digital signal. The circuit further includes a multiplexer to provide the first digital signal as an output signal responsive to a first state of a selection signal and to provide the second digital signal as the output signal responsive to a second state of the selection signal. The first and second states of the selection signal can be based on a relative amplitude of the first and second digital signals.

Voltage identification signal decoder

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Karthik Anyam