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1. 发明授权

US11355951B2 Power failure prevention system 有权
公开(公告)号：US11355951B2
公开(公告)日：2022-06-07
申请号：US16785700
申请日：2020-02-10
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Tzu-Yang Yen , Chih-Yuan Chen
IPC分类号： H02J7/34 , H02J7/00 , H02M3/07
摘要： A power failure prevention system includes a switch circuit, an energy storage circuit, a voltage detector circuit and a control circuit. The switch circuit includes a first switch, a second switch, a third switch and a fourth switch. The energy storage circuit is connected to the switch circuit. The voltage detector circuit detects an input voltage provided by an input voltage source and a stored voltage of the energy storage circuit. The control circuit controls the switch circuit according to the detected input voltage and stored voltage. When the input voltage is higher than a first threshold, the switch circuit allows the input voltage to charge the energy storage circuit. When the input voltage is lower than a second threshold, the switch circuit allows the stored voltage to discharge to the input voltage source. The first threshold is higher than the second threshold.

2. 发明授权

US11255881B2 Inductor current detecting circuit 有权
公开(公告)号：US11255881B2
公开(公告)日：2022-02-22
申请号：US17011004
申请日：2020-09-03
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Yuan Chen
IPC分类号： G01R15/06 , G01R15/18
摘要： An inductor current detecting circuit is provided. A differentiator circuit differentiates a high-side voltage signal to generate a first differential signal, and differentiates a low-side voltage signal to generate a second differential signal. A first current source outputs a first charging current according to the first differential signal. A second current source outputs a second charging current according to the second differential signal. First and second terminals of a first switch are respectively connected to the first current source and a first terminal of a second switch. A second terminal of the second switch is connected to the second current source. Two terminals of a capacitor are connected to the second terminal of the first switch and the second current source respectively. The first switch and the second switch are alternately turned on to obtain a continuous waveform.

3. 发明授权

US10312806B1 Voltage converter for simulating inductor current control 有权
公开(公告)号：US10312806B1
公开(公告)日：2019-06-04
申请号：US16030075
申请日：2018-07-09
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Yuan Chen , Zhan-Zhe Huang
IPC分类号： H02M3/156 , H02M1/08 , H02M1/00
摘要： The present disclosure provides a voltage converter for simulating inductor current control, which simulates an inductor current of a power level circuit according to operation signals generated by a control circuit, an input voltage, and an output voltage, thereby achieving detection of the inductor current by using a non-sensing method. Therefore, compared to a conventional sensing method, the voltage converter of the present disclosure can reduce use of a sensing circuit to reduce costs, and an inductor current ramp generated thereby has no distortion. Accordingly, the voltage converter of the present disclosure can improve the accuracy of inductor current detection.

4. 发明授权

US10211735B1 Voltage converter for fast load transient response 有权
公开(公告)号：US10211735B1
公开(公告)日：2019-02-19
申请号：US16041030
申请日：2018-07-20
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Yuan Chen , Zhan-Zhe Huang
IPC分类号： H02M3/158 , H02M1/32 , H02M1/08 , H02M1/00
摘要： A voltage converter for fast load transient response adapted for a boost type voltage converter determines whether a transient state occurs, that is, whether a load is converted from a heavy load to a light load, according to a transient detection circuit. When the transient state occurs, an inductive current quickly drops to a corresponding current value to accelerate the rate of an output voltage returning to a stable voltage value, and to shorten a time of load transient response, so as to avoid affecting the performance of a load, especially a sensitive load.

5. 发明授权

US09966849B1 Current mode voltage converter having fast transient response 有权
公开(公告)号：US09966849B1
公开(公告)日：2018-05-08
申请号：US15485471
申请日：2017-04-12
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Hsin-Tai Lin , Chih-Yuan Chen
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , G05F1/56 , H02M3/155 , H02M3/157 , H02M2003/1566
摘要： A current mode voltage converter having fast transient response is provided. The current mode voltage converter is used for converting an input voltage into an output voltage to drive a load. The current mode voltage converter adaptively adjusts the frequency of a clock signal by a first compensation circuit and a second compensation circuit to accordingly adjust an inductive current. Therefore, the output voltage can be adjusted rapidly in response to different load changes to enhance the transient response of the output voltage.

6. 发明授权

US09496788B2 Multi-phase boost converter with phase self-detection and detecting circuit thereof 有权
标题翻译：具有相位自检测电路的多相升压转换器
公开(公告)号：US09496788B2
公开(公告)日：2016-11-15
申请号：US14727725
申请日：2015-06-01
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Yu-Yu Chen , Chih-Yuan Chen
IPC分类号： H02M3/158 , H02M3/156
CPC分类号： H02M3/158 , H02M3/156 , H02M3/1584 , H02M2001/0048 , Y02B70/1491
摘要： A multi-phase boost converter with phase self-detection and a detecting circuit thereof are provided. The multi-phase boost converter comprises M switching circuits, a capacitor, a control circuit and a detecting circuit. Each switching circuit has an input end and an output end. N inductors are coupled in parallel between the input ends and an input voltage. The output ends are coupled to an output voltage. The control circuit controls the conduction status of the switching circuits according to a feedback voltage corresponding to the output voltage. The detecting circuit coupled between the input ends and the control circuit detects the conduction status between the input voltage and each of the input ends, for outputting a first control signal. The control circuit controlled by the first control signal selectively controls at least one of the switching circuits. N is a positive integer less than or equal to M.
摘要翻译：提供具有相位自检测的多相升压转换器及其检测电路。多相升压转换器包括M个开关电路，一个电容器，一个控制电路和一个检测电路。每个开关电路都有一个输入端和一个输出端。 N个电感器在输入端和输入电压之间并联耦合。输出端耦合到输出电压。控制电路根据对应于输出电压的反馈电压来控制开关电路的导通状态。耦合在输入端和控制电路之间的检测电路检测输入电压和每个输入端之间的导通状态，用于输出第一控制信号。由第一控制信号控制的控制电路选择性地控制至少一个开关电路。 N是小于或等于M的正整数。

7. 发明授权

US10454461B1 Frequency compensation circuit used in DC voltage converter 有权
公开(公告)号：US10454461B1
公开(公告)日：2019-10-22
申请号：US16103966
申请日：2018-08-16
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Tzu-Yang Yen , Chih-Yuan Chen
IPC分类号： H03K5/00 , H03K3/037 , H03K5/24 , H02M1/08 , H03K19/20
摘要： A frequency compensation circuit includes a compensation circuit and a calculation circuit. The compensation circuit controls the calculation circuit to generate a ramp voltage when the voltage at a node between an upper-side switch and a lower-side switch of the DC voltage converter is larger than an input voltage of the DC voltage converter. The calculation circuit generates a control signal at low level when the ramp voltage is smaller than the output voltage of the DC voltage converter so that the frequency compensation circuit generates the constant on-time signal at high level. The calculation generates the control signal at high level when the ramp voltage is larger than or equal to the output voltage of the DC voltage converter so that the frequency compensation circuit generates the constant on-time signal at low level.

8. 发明授权

US09966852B1 Dual voltage output device and charging circuit thereof 有权
公开(公告)号：US09966852B1
公开(公告)日：2018-05-08
申请号：US15475949
申请日：2017-03-31
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Fu-Chuan Chen , Chih-Yuan Chen
IPC分类号： H02M3/158 , H02J7/00
CPC分类号： H02M3/1582 , H02J7/0052 , H02M3/158 , H02M3/1588 , H02M2001/009
摘要： A dual voltage output device includes a charging circuit and a control circuit. The charging circuit includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, an inductor, a first capacitor and a second capacitor. The control circuit controls the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch so that a DC voltage source charges the inductor and the inductor charges the first capacitor and the second capacitor individually or together. Therefore, the capacitor provides a first voltage, and the second capacitor provides a second voltage.

9. 发明授权

US09800131B1 Phase controller and multi-phase voltage converter using the same 有权
公开(公告)号：US09800131B1
公开(公告)日：2017-10-24
申请号：US15231920
申请日：2016-08-09
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Yuan Chen
IPC分类号： H02M3/158 , G05F1/44 , H02M1/084
CPC分类号： H02M1/084 , H02M3/158 , H02M3/1584 , H02M2003/1586
摘要： Provided herein is a phase controller for a multi-phase voltage converter. The phase controller includes a plurality of logic control circuits, a phase selection circuit and a plurality of signal generators. The logic control circuits receive a plurality of phase-change signals and output a plurality of logic signals, respectively. The signal generators provide a plurality of bridge circuits with a plurality of phase selection signals to drive the bridge circuits. The phase selection circuit controls the signal generators according to the logic signals and a voltage determination signal. When the voltage determination signal stays at a high logic level for a pre-determined time period, the phase selection circuit controls the signal generators to output a plurality of phase selection signals at a high logic level to the bridge circuits such that the corresponding bridge circuits provide power at the same time.

10. 发明授权

US09634565B2 Modulation method, and modulation module and voltage converting device thereof 有权
公开(公告)号：US09634565B2
公开(公告)日：2017-04-25
申请号：US14085758
申请日：2013-11-20
申请人： Anpec Electronics Corporation
发明人： Chih-Yuan Chen , Hsin-Tai Lin
IPC分类号： H02M3/156 , H02M3/158 , H02M1/44 , H02M1/00
CPC分类号： H02M3/158 , H02M1/44 , H02M3/156 , H02M2001/008 , H02M2003/1586
摘要： A modulation method, for a voltage converting device, includes generating a first modulation signal according to an input voltage and a first output voltage; generating a second modulation signal according to the input voltage and a second output voltage; adjusting the first modulation signal and the second modulation signal according to a clock signal for making a first starting time of the first modulation signal be different from a second starting time of the second modulation signal; and generating the first output voltage and the second output voltage according to the input voltage, the first modulation signal and the second modulation signal.

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