Patent
Switching scheme for step up-step down converters using fixed frequency current-mode control
Hong Ren,Chen Daniel Long,Christopher Thomas Falvey +2 more
- 18 Apr 2011
22
TL;DR: In this article, a step up-step down switching regulator that produces a regulated output signal at the output node in response to an input signal at an input node, and has an inductive device, a plurality of switching circuits, and a switch control circuit for driving the switching devices so as to enable the power supply system to operate in a boost mode to increase the input signal, in a buck mode to decrease the output signal, and when a difference between the input signals and the output signals is within a predetermined range.
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Abstract: Novel circuitry and methodology for controlling a step up-step down switching regulator that produces a regulated output signal at an output node in response to an input signal at an input node, and has an inductive device, a plurality of switching circuits for providing connection of the inductive device to the input and output nodes and a ground node, and a switch control circuit for driving the switching devices so as to enable the power supply system to operate in a boost mode to increase the input signal, in a buck mode to decrease the input signal, and in a buck-boost mode when a difference between the input signal and the output signal is within a predetermined range. Buck-boost latch circuitry is provided for latching a transition between the buck mode and the buck-boost mode, or between the boost mode and the buck-boost mode based on a predetermined condition.
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Citations
Patent
Control Method of High Efficient Buck-Boost Switching Regulator
Naoyuki Unno
- 20 Mar 2013
TL;DR: In this article, a buck-boost switching regulator that allows changing operation modes without causing large output ripples during transition of operation modes is presented. But the performance of the switching regulator depends on the error amplifier output voltage.
19
Patent
Inverse Charge Current Mode (IQCM) Control for Power Converter
Syed Bari,Fred C. Lee,Qiang Li +2 more
- 04 Apr 2016
TL;DR: In this paper, an amount of charge transferred by a power converter is estimated by developing a signal that is a combination of signals representing an output voltage and an inductor current of the power converter, charging a capacitor with a current proportional to that signal and comparing a voltage developed across the capacitor due to that charging to develop a signal for initiating a pulse to control input of power from a voltage source to the power converter.
16
Patent
Method for a current mode buck-boost converter
Kemal Ozanoglu,Selcuk Talay,Pier Cavallini,Dieter Graefje,Andrea Acquas +4 more
- 19 Jun 2014
TL;DR: In this paper, a buck/boost decision method with continuous control voltage for buck and boost modes was proposed to eliminate transients in the control loop between operation modes and prevent voltage overshoots.
14
Patent
Power converter for generating both positive and negative output signals
Albert M. Wu,Matthew Anthony Topp +1 more
- 13 Dec 2013
TL;DR: In this paper, a power converting system has an input node for receiving the input signal, an output node for producing the output signal, and first and second inductive elements are coupled to the output node.
13
Patent
Switching regulator and integrated-circuit package
Yamaguchi Yuhei,Tetsuo Tateishi +1 more
- 29 Jun 2016
TL;DR: In this article, a switching regulator is proposed for MOS transistor switches that are complementarily turned on/off according to an output voltage VOUT, and the switching regulator performs current mode control according to information of current flowing in the second switch.
7
References
Patent
Control circuit and method for maintaining high efficiency in a buck-boost switching regulator
Trevor W. Barcelo,David M. Dwelley +1 more
- 26 Mar 2001
TL;DR: In this paper, a high efficiency control circuit for operating a buck-boost switching regulator is provided, which can regulate an output voltage higher, lower, or the same as the input voltage.
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Patent
Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators
Joey Martin Esteves,Randy G Flatness +1 more
- 12 Sep 2002
TL;DR: In this paper, an adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators is proposed. But the burst threshold level can be adjusted by external control.
152
Patent
Digital Average Input Current Control in Power Converter
Amir Fishelov,Meir Gazit,Nikolay Radimov +2 more
- 26 Oct 2012
TL;DR: In this paper, the authors proposed a digital average-input current-mode control loop for a DC/DC power converter, where the purpose of the proposed control loop is to set the average converter input current to the requested current.
134
Patent
Buck or boost power converter
Pallab Midya,Lawrence E. Connell,Kenneth Robert Haddad +2 more
- 11 Dec 2000
TL;DR: In this paper, a buck or boost (BOB) power converter circuit is used to generate positive and negative ramp signals and an error feedback signal is compared with the ramp signals to control the output in accord with V ref.
128
Patent
Switching regulator and amplifier system
Robert E. Stengel
- 10 Mar 1995
TL;DR: In this article, a voltage regulator (200) includes a controller (204) which selectively activates a plurality of switching means (208, 210, 214, and 212) in order to select between a first current loop in which an energy storage device is charged by an input supply and a second loop coupled to the output terminal (242) of the regulator, the switching from the second current loop to the first is governed by the controller determining that the loop current in the second loop has reached a predetermined level.
124
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