US 12,438,455 B2
Regulated charge pump with adaptive drive strength
Semen Syroiezhin, Erlangen (DE); Andreas Baenisch, Grünwald (DE); Stephan Leuschner, Linz (AT); and Andreas Wickmann, Nuremberg (DE)
Assigned to INFINEON TECHNOLOGIES AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Feb. 19, 2024, as Appl. No. 18/581,158.
Application 18/581,158 is a continuation of application No. 17/807,526, filed on Jun. 17, 2022, granted, now 11,936,293.
Prior Publication US 2024/0195296 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/07 (2006.01); H03K 5/24 (2006.01); H03K 19/20 (2006.01)
CPC H02M 3/07 (2013.01) [H03K 5/24 (2013.01); H03K 19/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A regulated charge pump comprising:
an amplifier having first and second inputs, the second input configured to receive a reference voltage;
a clock generator having an input coupled to an output of the amplifier;
a first open-loop charge pump in a first feedback path having an input coupled to a first output of the clock generator, and an output coupled to the first input of the amplifier; and
a second open-loop charge pump in a second feedback path having an input coupled to a second output of the clock generator, and an output coupled to the first input of the amplifier,
wherein an output of the regulated charge pump comprises the output of the first open-loop charge pump and the output of the second open-loop charge pump, and wherein the first output of the clock generator is configured for providing a first clock signal having a first frequency, and wherein the second output of the clock generator is configured for providing a second clock signal having a second frequency different from the first frequency.