公开(公告)号：US20240388219A1

公开(公告)日：2024-11-21

申请号：US18483956

申请日：2023-10-10

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： Arkadiy Peker

IPC: H02M7/219 ,  H02M1/00 ,  H03K17/06 ,  H03K17/687

Abstract: An ideal diode bridge controller is provided that includes gate drivers to connect to transistors of a bridge rectifier in which the transistors are arranged as high-side transistors and low-side transistors. The gate drivers alternately switch the transistors to cause the bridge rectifier to convert an input voltage of either of two polarities to an output voltage of one of the two polarities. The gate drivers include low-side gate drivers for the low-side transistors, and respective ones of the low-side gate drivers include linear drive circuitry and digital drive circuitry. The linear drive circuitry drives a respective low-side transistor to switch on and off based on forward current through the respective low-side transistor. The digital drive circuitry detects a reverse current through the respective low-side transistor, and causes the respective low-side transistor to switch off in response to the reverse current.

公开(公告)号：US20250023382A1

公开(公告)日：2025-01-16

申请号：US18404554

申请日：2024-01-04

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： Arkadiy Peker ,  Yair Darshan ,  Miguel Jacubovski

IPC: H02J9/06 ,  H02M3/04

Abstract: A powered device (PD) interface controller is provided that includes a switch and control circuitry. The switch controls current to a PD from a power sourcing equipment (PSE). The PD accepts power from a network cable over which data is carried, and the PSE provides the power to the network cable. The PD also accepts power from an auxiliary power source. The control circuitry detects a change-over from the auxiliary power source to the PSE as a source of power. The control circuitry turns on the switch to control the current to a short circuit current limit level, greater than a startup inrush current limit of the PD, for a period of time less than a short circuit time limit, to charge a bulk capacitor of the PD. The control circuitry turns on the switch fully to allow the current to flow towards the PD.

公开(公告)号：US20240036625A1

公开(公告)日：2024-02-01

申请号：US18227336

申请日：2023-07-28

Applicant: Microchip Technology Incorporated

Inventor： Tamir Langer ,  Arkadiy Peker

IPC: G06F1/26

CPC classification number: G06F1/26

Abstract: An apparatus includes a power-over-Ethernet (POE) interface to be connected to a powered device (PD) over an Ethernet cable and a control circuit. The control circuit is to measure a voltage provided by the apparatus through the Ethernet cable, determine that the voltage has dropped by at least a given voltage change, based on a determination that the voltage has dropped by at least the given voltage change, determine whether or not a predetermined quantity of Maintain Power Signature (MPS) signals have been missed within a given time frame, and, based on a determination that the predetermined quantity of MPS signals has not been missed within the given time frame, determine that the PD is still connected to the apparatus.