- Patent Title: Microcontroller architecture for power factor correction converter
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Application No.: US15487426Application Date: 2017-04-13
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Publication No.: US09933842B2Publication Date: 2018-04-03
- Inventor: Charles E. Green , Joseph G. Marcinkiewicz
- Applicant: Emerson Climate Technologies, Inc.
- Applicant Address: US OH Sidney
- Assignee: Emerson Climate Technologies, Inc.
- Current Assignee: Emerson Climate Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: H02M1/42
- IPC: H02M1/42 ; G06F1/32 ; H02P29/02 ; G06F9/445 ; G06F13/42 ; G06F13/40 ; G06F9/22 ; G06F12/02

Abstract:
A circuit for driving a motor of a compressor includes a microcontroller, which includes an op-amp, a comparator, a first serial interface, and a first dedicated pin. The op-amp amplifies a value indicating current in a power factor correction converter, which includes a power switch. The comparator asserts a comparison signal in response to the amplified value exceeding a reference value. The comparison signal is output on the first dedicated pin. A programmable logic device (PLD) includes a second serial interface in communication with the first serial interface and a second dedicated pin. The comparison signal is received on the second dedicated pin and the PLD receives control messages from the microcontroller via the second serial interface. The PLD sets a value in an off-time register based on a control message from the microcontroller. The PLD controls the power switch according to the comparison signal and the off-time register.
Public/Granted literature
- US20170300107A1 Microcontroller Architecture for Power Factor Correction Converter Public/Granted day:2017-10-19
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