-
公开(公告)号：US20170264203A1
公开(公告)日：2017-09-14
申请号：US15442886
申请日：2017-02-27
Applicant: Microchip Technology Incorporated
Inventor： Simon Krugly , Alexander Mednik , Marc Tan , Rohit Tirumala
CPC classification number: H02M3/33507 , H02M1/08 , H02M1/4258 , H02M2001/0003 , H02M2001/0009 , H02M2001/0025 , H02M2001/0054 , Y02B70/126 , Y02B70/1491
Abstract: A high power-factor buck-boost converter having a rectified low-frequency AC line voltage input and a DC output is provided. The converter may include a magnetic element, a controlled switch having a gate terminal and a drain terminal that is coupled to the magnetic element, a rectifier diode coupled to the magnetic element, an output smoothing capacitor coupled to the rectifier diode, and a control circuit having an output coupled to the gate terminal of the controlled switch for repeatedly turning the controlled switch off for a first time duration and on for a second time duration. The second time duration may be determined as a function of the first time duration immediately preceding the second time duration.
-
Patent Agency Ranking
公开(公告)号：US11689105B2
公开(公告)日：2023-06-27
申请号：US17381827
申请日：2021-07-21
Applicant: Microchip Technology Incorporated
Inventor： Simon Krugly
CPC classification number: H02M3/1582 , H02M1/0025
Abstract: A multi-mode converter using iterative average current mode pulse width modulation (PWM) control is provided. The converter may include a current sense amplifier configured to output a current sense signal over a present switching cycle based on an inductor current through an inductor, a voltage error amplifier configured to output an error voltage based on a difference between a reference voltage and an output voltage, and a PWM controller. The PWM controller may include an error voltage modifier circuit configured to selectively output the error voltage or a modified error voltage based on a mode signal, and an iterative average current control circuit configured to generate a PWM signal based on the output from the error voltage modifier circuit, the current sense signal over the present switching cycle and a current sense signal over a previous switching cycle that precedes the present switching cycle.
-
3.发明申请公开(公告)号：US20160182131A1
公开(公告)日：2016-06-23
申请号：US14872878
申请日：2015-10-01
Applicant: Microchip Technology Incorporated
Inventor： Alexander Mednik , Simon Krugly
CPC classification number: H02M3/33523 , H02M3/24 , H02M3/33576 , H04B5/00
Abstract: A communication method and apparatus that uses modulation of post-conduction oscillation frequency in switching converters is provided. The apparatus may include a converter having a magnetic element having a primary winding and a secondary winding, a first switch, a control circuit configured to repeatedly activate the first switch to couple an input voltage source to the primary winding to store electrical energy in the magnetic element, and a diode coupled to the secondary winding, said diode configured to couple the secondary winding to a load to deliver the electrical energy stored in the magnetic element, and a communication apparatus having a second switch, a first modulator capacitor coupled to the secondary winding, a first transmitter configured to activate the second switch in accordance with a first input signal, and a first receiver configured to detect a post-conduction oscillation frequency of a voltage signal at the primary or secondary windings.
Abstract translation: 提供了一种在开关转换器中使用后导通振荡频率的调制的通信方法和装置。 该装置可以包括具有初级绕组和次级绕组的磁性元件的转换器，第一开关，控制电路，被配置为重复地激活第一开关以将输入电压源耦合到初级绕组以将电能存储在磁性 元件和耦合到次级绕组的二极管，所述二极管被配置为将次级绕组耦合到负载以递送存储在磁性元件中的电能，以及具有第二开关的通信设备，耦合到次级绕组的第一调制器电容器 绕组，被配置为根据第一输入信号激活第二开关的第一发射器和被配置为检测初级或次级绕组处的电压信号的后导通振荡频率的第一接收器。
-
公开(公告)号：US20220345043A1
公开(公告)日：2022-10-27
申请号：US17381827
申请日：2021-07-21
Applicant: Microchip Technology Incorporated
Inventor： Simon Krugly
Abstract: A multi-mode converter using iterative average current mode pulse width modulation (PWM) control is provided. The converter may include a current sense amplifier configured to output a current sense signal over a present switching cycle based on an inductor current through an inductor, a voltage error amplifier configured to output an error voltage based on a difference between a reference voltage and an output voltage, and a PWM controller. The PWM controller may include an error voltage modifier circuit configured to selectively output the error voltage or a modified error voltage based on a mode signal, and an iterative average current control circuit configured to generate a PWM signal based on the output from the error voltage modifier circuit, the current sense signal over the present switching cycle and a current sense signal over a previous switching cycle that precedes the present switching cycle.
-
公开(公告)号：US10103635B2
公开(公告)日：2018-10-16
申请号：US15442886
申请日：2017-02-27
Applicant: Microchip Technology Incorporated
Inventor： Simon Krugly , Alexander Mednik , Marc Tan , Rohit Tirumala
Abstract: A high power-factor buck-boost converter having a rectified low-frequency AC line voltage input and a DC output is provided. The converter may include a magnetic element, a controlled switch having a gate terminal and a drain terminal that is coupled to the magnetic element, a rectifier diode coupled to the magnetic element, an output smoothing capacitor coupled to the rectifier diode, and a control circuit having an output coupled to the gate terminal of the controlled switch for repeatedly turning the controlled switch off for a first time duration and on for a second time duration. The second time duration may be determined as a function of the first time duration immediately preceding the second time duration.
-
公开(公告)号：US09602015B2
公开(公告)日：2017-03-21
申请号：US14872878
申请日：2015-10-01
Applicant: Microchip Technology Incorporated
Inventor： Alexander Mednik , Simon Krugly
CPC classification number: H02M3/33523 , H02M3/24 , H02M3/33576 , H04B5/00
Abstract: A communication method and apparatus that uses modulation of post-conduction oscillation frequency in switching converters is provided. The apparatus may include a converter having a magnetic element having a primary winding and a secondary winding, a first switch, a control circuit configured to repeatedly activate the first switch to couple an input voltage source to the primary winding to store electrical energy in the magnetic element, and a diode coupled to the secondary winding, said diode configured to couple the secondary winding to a load to deliver the electrical energy stored in the magnetic element, and a communication apparatus having a second switch, a first modulator capacitor coupled to the secondary winding, a first transmitter configured to activate the second switch in accordance with a first input signal, and a first receiver configured to detect a post-conduction oscillation frequency of a voltage signal at the primary or secondary windings.
-
-
-
-
-
Search Results
6
records
(took 0.016 seconds)
