US 12,449,832 B2
Control circuitry for parallel-operating voltage regulators
Rinu Mathew, Bangalore (IN); Venkatesh Kadlimatti, Bangalore (IN); and Harikrishna Parthasarathy, Bangalore (IN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Sep. 22, 2023, as Appl. No. 18/371,537.
Prior Publication US 2025/0103077 A1, Mar. 27, 2025
Int. Cl. H02M 1/00 (2007.01); G05F 1/575 (2006.01); G05F 3/26 (2006.01); H02M 3/158 (2006.01)
CPC G05F 1/575 (2013.01) [G05F 3/262 (2013.01); H02M 1/0045 (2021.05); H02M 3/158 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an input terminal configured to receive an input voltage;
a first output terminal configured to provide a first control signal for a first voltage regulator;
a second output terminal configured to provide a second control signal for a second voltage regulator;
a first share control circuit configured to generate the first control signal, comprising:
a first resistor having a first terminal and a second terminal, the first terminal coupled to the input terminal, the second terminal coupled to the first output terminal;
a first transistor having a first terminal, a second terminal, and a third terminal, the first terminal coupled to the second terminal of the first resistor, the second terminal configured to receive a first control voltage; and
a first current source coupled to the third terminal of the first transistor; and
a second share control circuit configured to generate the second control signal, comprising:
a second transistor having a first terminal, a second terminal, and a third terminal, the first terminal coupled to the input terminal;
a second resistor having a first terminal and a second terminal, the first terminal coupled to the third terminal of the second transistor, the second terminal coupled to the second output terminal; and
a third transistor having a first terminal, a second terminal, and a third terminal, the first terminal coupled to the second terminal of the second resistor, the second terminal configured to receive the first control voltage, the third terminal coupled to the first current source.