Inventor
FLETCHER JAY B
US28 patents
Patents
28 patentsUS10234883B1Mar 19, 2019
Dual loop adaptive LDO voltage regulator
APPLE INC19 citations84
US10886851B1Jan 5, 2021
Voltage regulator with multi-level, multi-phase buck architecture
APPLE INC5 citations83
US10146240B1Dec 4, 2018
High current LDO voltage regulator with dynamic pre-regulator
APPLE INC14 citations82
US10122269B2Nov 6, 2018
Current mode control of a buck converter using coupled inductance
APPLE INC2 citations73
US9306457B2Apr 5, 2016
Instantaneous load current monitoring
APPLE INC4 citations73
US9989981B1Jun 5, 2018
Cascaded LDO voltage regulator
APPLE INC6 citations72
US9843330B1Dec 12, 2017
Digital secondary control loop for voltage converter
APPLE INC3 citations69
US12591261B2Mar 31, 2026
Regulator system with voltage control
APPLE INC0 citations62
US12231044B2Feb 18, 2025
Power converter circuit for use with multiple low-current power rails
APPLE INC0 citations62
US11742761B2Aug 29, 2023
Voltage regulator with multi-level, multi-phase buck architecture
APPLE INC0 citations62
US11467614B2Oct 11, 2022
Voltage mode low-dropout regulator circuit with reduced quiescent current
APPLE INC1 citations62
US11431250B2Aug 30, 2022
Voltage regulator with multi-level, multi-phase buck architecture
APPLE INC0 citations62
US10520970B2Dec 31, 2019
Multi-phase current mode control loop incorporating a distributed transconductance stage
APPLE INC1 citations62
US11714480B2Aug 1, 2023
Computer system power monitoring
APPLE INC0 citations61
US11695336B2Jul 4, 2023
Multi-phase power converter with external phase circuits
APPLE INC1 citations61
US11144110B2Oct 12, 2021
Computer system power monitoring
APPLE INC0 citations61
US12244231B2Mar 4, 2025
Power converter with overdrive switch control
APPLE INC0 citations60
US12034370B2Jul 9, 2024
Power converter with overdrive switch control
APPLE INC0 citations60
US11397444B2Jul 26, 2022
Voltage regulator dropout detection
APPLE INC1 citations60
US11303208B2Apr 12, 2022
Cycle transitions for buck converter circuits
APPLE INC1 citations60
US11133663B2Sep 28, 2021
Reverse current protection circuit
APPLE INC1 citations60
US12093068B2Sep 17, 2024
Scalable low dropout regulator having multiple pass circuits
APPLE INC0 citations52
US10491120B2Nov 26, 2019
Constant off-time control method for buck converters using coupled inductors
APPLE INC0 citations52
US10122275B2Nov 6, 2018
Constant off-time control method for buck converters using coupled inductors
APPLE INC0 citations52
US12081124B2Sep 3, 2024
Regulator switch array
APPLE INC0 citations51
US11736017B2Aug 22, 2023
Pulse frequency modulation control methods for multi-phase power converters with coupled inductors
APPLE INC0 citations49
US11287839B2Mar 29, 2022
Dual loop LDO voltage regulator
APPLE INC0 citations49
US12393257B2Aug 19, 2025
Wakeup circuit
APPLE INC0 citations47