US 11,722,105 B2
Recovery control for power converter
Tawen Mei, Sunnyvale, CA (US); Jiun Heng Goh, Cupertino, CA (US); and Robert Blattner, Sunnyvale, CA (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Oct. 11, 2021, as Appl. No. 17/498,259.
Application 17/498,259 is a continuation of application No. 16/264,311, filed on Jan. 31, 2019, granted, now 11,183,977.
Claims priority of provisional application 62/726,647, filed on Sep. 4, 2018.
Prior Publication US 2022/0029590 A1, Jan. 27, 2022
Int. Cl. H03F 3/04 (2006.01); H03K 17/687 (2006.01); H03F 3/217 (2006.01); H03F 1/02 (2006.01)
CPC H03F 3/04 (2013.01) [H03K 17/687 (2013.01); H03F 1/0244 (2013.01); H03F 3/217 (2013.01); H03F 3/2171 (2013.01); H03F 2200/129 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device, comprising:
a capacitor;
a current source coupled to the capacitor;
at least one transistor coupled to the capacitor and configured to discharge the capacitor;
an error amplifier having first and second error amplifier inputs and an error amplifier output, wherein the first error amplifier input is coupled to the current source, the error amplifier output is coupled to the at least one transistor, and the error amplifier is configured to provide a pulse width modulation (PWM) signal at the error amplifier output; and
a clamping amplifier having a clamping amplifier input and a clamping amplifier output, wherein the clamping amplifier is configured to:
receive the PWM signal at the clamping amplifier input; and
provide a clamping signal at the clamping amplifier output responsive to the PWM signal, the clamping signal controlling the at least one transistor.