US 9,958,886 B2Granted

Tunable DC voltage generating circuit

AssigneeRichtek Technology Corporation

InventorsKuo-Chi Liu, Wei-Hsin Wei

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Abstract

A tunable DC voltage generating circuit includes: a resonance circuit including an inductor and an input capacitor coupled in a series connection, and arranged to operably receive an input signal and to operably generate a resonance signal at an output node between the inductor and the input capacitor; a rectifying circuit arranged to operably rectify the resonance signal; a current control unit, coupled with an output of the rectifying circuit, and coupled with the inductor or the input capacitor in a parallel connection; a stabilizing capacitor, coupled with the output of the rectifying circuit, arranged to operably provide a DC output signal having a voltage level greater than that of the input signal; and a control circuit arranged to operably adjust a current passing through the current control unit according to a setting signal to thereby manipulate the DC output signal.

Claims4

Dependent claims

A tunable DC voltage generating circuit (500), comprising:

a resonance circuit (110) comprising an inductor (111) and an input capacitor (113) coupled in a series connection, and arranged to operably receive an input signal (VIN) and to operably generate a resonance signal (VLC) at an output node (115) between the inductor (111) and the input capacitor (113);
a rectifying circuit (120), coupled with the output node (115), arranged to operably rectify the resonance signal (VLC);
a current control unit (130), coupled with an output of the rectifying circuit (120), and coupled with the inductor (111) or the input capacitor (113) in a parallel connection;
a stabilizing capacitor (140), coupled with the output of the rectifying circuit (120), arranged to operably provide a DC output signal (VOUT) having a voltage level greater than that of the input signal (VIN);
and
a control circuit (150), coupled with the current control unit (130) and the output of the rectifying circuit (120), arranged to operably adjust a current passing through the current control unit (130) according to a setting signal (VSET) to thereby manipulate the DC output signal (VOUT).

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/685,197Filed 24 Aug 2017 · division
Priority: CN 2016 1 00783064 Feb 2016
Published: US 2017/0227974 A17 Dec 2017
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G05F 1/46
Regulating voltage or current: wherein the variable actually regulated by the final control device is DC
H02M 3/06
By static converters: using resistors or capacitors, e.g. potential divider
H02M 3/156
Using semiconductor devices only: with automatic control of output voltage or current, e.g. switching regulators
H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…

Family

Application15/284,755Parent of this division · filed 4 Oct 2016
US 2017/0351281 A1Pre-grant publication · published 7 Dec 2017
US 9,823,675 B2Parent of this division
US 2017/0227974 A1Published application
US 9,958,886 B2This patent

From the US filing history. Foreign family members aren’t listed.