US 12,273,083 B2
Circuitry for providing an output voltage
John B. Bowlerwell, Dunfermline (GB); Andrew J. Howlett, Edinburgh (GB); Saurabh Singh, Edinburgh (GB); and Andrew Buist, Edinburgh (GB)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Apr. 19, 2021, as Appl. No. 17/233,811.
Claims priority of provisional application 63/021,805, filed on May 8, 2020.
Claims priority of application No. 2007513 (GB), filed on May 20, 2020.
Prior Publication US 2021/0351753 A1, Nov. 11, 2021
Int. Cl. H03F 1/14 (2006.01); G06F 1/18 (2006.01); H02M 3/156 (2006.01); H03F 1/52 (2006.01); H03G 1/00 (2006.01)
CPC H03G 1/0029 (2013.01) [G06F 1/189 (2013.01); H02M 3/156 (2013.01); H03F 1/52 (2013.01)] 19 Claims
OG exemplary drawing
 
1. Circuitry for providing an output voltage, the circuitry comprising:
voltage generator circuitry configured to provide an output voltage to an output node of the circuitry;
current limiter circuitry operable to perform current limiting so as to limit a current supplied at the output node of the circuitry;
detection circuitry configured to output a detection signal when a load voltage across a load coupled to the output node of the circuitry reaches a target voltage; and
delay circuitry configured to receive the detection signal and to output a control signal to deactivate current limiting by the current limiter circuitry after a predetermined delay period after receiving the detection signal;
wherein the detection circuitry is configured to:
compare the output voltage provided by the voltage generator circuitry to the load voltage across the load; and
output the detection signal when the load voltage reaches the target voltage, wherein the target voltage is a predetermined value based on the output voltage provided by the voltage generator circuitry.