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

IPC: H02M1/00 ,  H02M3/335 ,  H04B5/00 ,  H02M3/24

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.

公开(公告)号：US10778080B1

公开(公告)日：2020-09-15

申请号：US16657301

申请日：2019-10-18

Applicant: Microchip Technology Incorporated

Inventor： Alexander Mednik

IPC: H02M1/00 ,  H02M1/08 ,  H02M7/217 ,  H02M1/32

Abstract: A self-biased non-isolated buck regulator is provided. The regulator may include a first input terminal and a second input terminal, a high-voltage switch coupled to the first input terminal, a low-voltage switch coupled to the high-voltage switch, an inductor having a first terminal coupled to the high-voltage switch and the first low-voltage switch, a high-voltage rectifier diode coupled between the first low-voltage switch and the second input terminal, a second low-voltage switch coupled to the first low-voltage switch and the high-voltage rectifier diode, and a capacitor having a first terminal coupled to the first terminal of the inductor, and a second terminal coupled to the second low-voltage switch.

公开(公告)号：US10381918B1

公开(公告)日：2019-08-13

申请号：US16053438

申请日：2018-08-02

Applicant: Microchip Technology Incorporated

Inventor： Ioan Stoichita ,  Alexander Mednik ,  Surya Talari

IPC: H02M1/15 ,  H02M3/157 ,  H02M3/158 ,  H02M3/156

CPC classification number: H02M1/15 ,  H02M3/156 ,  H02M3/157 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A multiple-phase parallelable constant on time (COT) buck controller, a first phase containing a first memory bit and a second phase containing a second memory bit. The COT buck controller includes a first converter comprising a first constant TON generator configured to sense and deliver a first TON request when the first memory bit is in a logic one state, and a second converter connected in parallel with the first converter, the second converter comprising a second constant TON generator configured to sense and deliver a second TON request when the second memory bit is in the logic one state, only one of the first memory bit and the second memory bit being in the logic one state thus generating activity in a daisy chain ring where each of the first converter and the second converter senses and delivers a corresponding TON request in a sequential manner.

公开(公告)号：US10348205B1

公开(公告)日：2019-07-09

申请号：US16045158

申请日：2018-07-25

Applicant: Microchip Technology Incorporated

Inventor： Alexander Mednik

IPC: G05F1/46 ,  H02M3/158 ,  H02M1/00

Abstract: A cascaded buck converter for receiving input voltage from an input voltage source and for delivering output voltage to a load. The converter includes a first inductor, a second inductor, a coupled inductor having a first winding connected in series with the first inductor and a second winding connected in series with the second inductor, an intermediate decoupling capacitor for receiving energy from the first inductor and the first winding and for supplying energy to the second inductor and the second winding, and an output decoupling capacitor for smoothening the output voltage at the load.

公开(公告)号：US20160301310A1

公开(公告)日：2016-10-13

申请号：US15088789

申请日：2016-04-01

Applicant: Microchip Technology Incorporated

Inventor： Alexander Mednik

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/34

CPC classification number: H02M3/158 ,  H02M1/34 ,  H02M2001/0009

Abstract: A zero-voltage switching buck converter circuit and control circuit are provided. The buck converter circuit may include a first inductor, a smoothing capacitor coupled to the first inductor, a rectifier diode coupled in parallel with the first inductor and the smoothing capacitor, a control switch coupled to the first inductor, a control circuit configured to turn the control switch off and on repeatedly at a high frequency rate; and a snubber network coupled to the first inductor and the control circuit. The snubber network may include second and third inductors connected in series, wherein one terminal of the first inductor is connected to a node connecting the second and third inductors, and an auxiliary switch connected to the control circuit. A first terminal of the second inductor that is not connected to the node may be coupled to the control switch, and a first terminal of the third inductor that is not connected to the node may be coupled to the auxiliary switch.

Abstract translation: 提供零电压开关降压转换器电路和控制电路。 降压转换器电路可以包括第一电感器，耦合到第一电感器的平滑电容器，与第一电感器和平滑电容器并联耦合的整流二极管，耦合到第一电感器的控制开关，配置成转换 控制开关以高频率反复打开; 以及耦合到第一电感器和控制电路的缓冲器网络。 缓冲网络可以包括串联连接的第二和第三电感器，其中第一电感器的一个端子连接到连接第二和第三电感器的节点以及连接到控制电路的辅助开关。 不连接到节点的第二电感器的第一端子可以耦合到控制开关，并且不连接到节点的第三电感器的第一端子可以耦合到辅助开关。