The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 28, 2017

Filed:

Aug. 23, 2016
Applicant:

Texas Instruments Incorporated, Dallas, TX (US);

Inventors:

Emmanuel Osei Boakye, Dallas, TX (US);

Roland Karl Son, Dallas, TX (US);

Juergen Luebbe, Fairview, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01); H03K 3/0233 (2006.01); H02M 1/08 (2006.01); H03K 17/082 (2006.01);
U.S. Cl.
CPC ...
H03K 3/02337 (2013.01); H02M 1/08 (2013.01); H03K 17/0822 (2013.01);
Abstract

In described examples, a transistor has: a source and a drain coupled between a supply voltage and an output terminal; and a gate terminal. A charge pump has: an output node coupled to the gate terminal; and a clock input. An oscillator is coupled to generate a clock signal. A clock enable circuit is coupled to: receive the clock signal; and selectively output the clock signal to the clock input, responsive to an enable signal. A comparator is coupled to output the enable signal in response to a comparison between a reference current and a current through a series resistor. The series resistor is coupled to the gate terminal.


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