Texas Instruments Corporation

Rinu Mathew

Anand Kumar G

Harikrishna Parthasarathy

Aniruddha Periyapatna Nagendra

Venkatesh Kadlimatti

Vineet Khurana

Torjus Lyng Kallerud

A power supply system may include multiple DC-to-DC (direct current) voltage regulators coupled in parallel to a load, and control circuitry to control the parallel-operating regulators. The control circuitry may include a first share control circuit, a second share control circuit, and a voltage regulation circuit. The first and second share control circuits may operate together with the voltage regulation circuit to control, respectively, the parallel-operating regulators to regulate a common output voltage. Additionally, first and second share control circuits may operate together with the voltage regulation circuit to control respective share of the load current by the parallel-operating regulators.

Control circuitry for parallel-operating voltage regulators

In an example, a voltage converter includes a pulse generator. The voltage converter also includes a high-side transistor having a gate coupled to the pulse generator, a source coupled to a first voltage terminal, and a drain coupled to an output node. The voltage converter includes a low-side transistor having a gate coupled to the pulse generator, a source coupled to a second voltage terminal, and a drain coupled to the output node. The voltage converter includes a charge lookup table coupled to the pulse generator, where the charge lookup table is configured to provide a charge duration. The voltage converter includes a discharge lookup table coupled to the pulse generator, where the discharge lookup table is configured to provide a discharge duration. The voltage converter also includes a latch coupled to the charge lookup table, where the latch is configured to store an indication of a supply voltage.

Lowering inductor peak current in DCDC digital controller

In an example, a device includes a controller and a direct current (DC)-to-DC converter coupled to the controller and configured to provide a load current to a load. The device also includes a low-dropout (LDO) regulator coupled to the DC-to-DC converter. The controller includes digital logic, and the digital logic is configured to determine the load current. The digital logic is configured to turn on the LDO regulator if the load current is above a predetermined threshold. The digital logic is also configured to turn off the LDO regulator if the load current is below the predetermined threshold.

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Rinu Mathew