AN2267 datasheet(14/19 Pages) STMICROELECTRONICS

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AN2267 데이터시트(PDF) 14 Page - STMicroelectronics

부품명	AN2267

상세설명	Implementation of current regulator for BLDC motor control with ST7FMC

PDF	19 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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14 / 19 page

Sampling inner current loop procedure

AN2267

14/19

Appendix A

Sampling inner current loop procedure

Procedure to set carrier frequency (Fpwm) and periodicity of U event (TU) for sampling inner

current loop:

Chosen Fpwm = 16KHz

where,

Fpwm = Fmtc / (Prescaler . 2 . MCP0)

Given Fmtc = 16MHz,

and choosing Prescaler = 1,

then,

MCP0 = 500

Choosing TU = 500µS

where,

TU = Tpwm . (MREP + 1) / 2

Substituting for TU and Tpwm,

MREP = 15

Prescaler

Up/ Down

counter

Repeat

Counter

Fmtc

MPCR

PCP[2:0]

MCP0

MREP

MPCR

CMS = 1

Fpwm

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