US 10,122,254 B2 · Devices, systems and processes for average current control

Abstract

Various embodiments of apparatuses, systems and methods for regulating the currents provided by a DCDC buck converters to an LED unit are provided. In accordance with at least one embodiment, a regulating element operable to instruct and regulate the periods during which a first switch of a driver module, used to control the operation of a buck converter module, is configured into at least one of a first operating state and a second operating state such that the maximum and minimum currents provided by the buck converter module to a load, such as an LED unit, over a given duty cycle are symmetrically disposed about an average current provided to the LED unit during the duty cycle, where the average current provided is substantially equal to a target current for the LED unit.

Claims20

Dependent claims

A device for use in regulating operations of a switched mode power supply, comprising:

a regulating element configured to:
determine a duration of at least one state for two or more cycles of a driver module;
wherein each cycle includes an “on” state and an “off” state;
wherein each cycle includes an “on” state lasting an “on” duration and an “off” state lasting an “off” duration;
receive a first signal for each cycle;
wherein the first signal represents an output voltage of the driver module for a current cycle;
and
output a time-off signal based on the received first signal;
wherein the time-off signal indicates the “off” duration of the driver module for the current cycle.

6 more elements

A method for regulating a buck converter module, comprising:

determining a first period for a first cycle of a buck converter module,
determining a second period for the first cycle;
comparing a duration of the first period to a duration of the second period;
and
based on the comparison,
first adjusting at least one of an “on” duration and an “off” duration for at least one next cycle arising after the first cycle.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/888,290Filed 5 Feb 2018 · continuation

Priority

21 Oct 2016

Published

US 2018/0159420 A17 Jun 2018

Granted

6 Nov 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

H05B 45/375
Switched mode power supply [SMPS]: using buck topology
H02M 1/08
Details of apparatus for conversion: circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in…
H02M 1/44
Details of apparatus for conversion: circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H02M 3/156
Using semiconductor devices only: with automatic control of output voltage or current, e.g. switching regulators

Family

Application62/410,937Us provisional application · filed 21 Oct 2016

Application15/382,980Parent of this continuation · filed 19 Dec 2016

US 2018/0159420 A1Pre-grant publication · published 7 Jun 2018

US 9,887,614 B1Parent of this continuation

US 10,122,254 B2This patent

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

Devices, systems and processes for average current control

Life of this patent

Devices, systems and processes for average current control

Life of this patent

Abstract

Claims20