STPMC1 datasheet(41/77 Pages) STMICROELECTRONICS

Il numero della parte	STPMC1

Spiegazioni elettronici	Programmable poly-phase energy calculator IC

PDF	77 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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41 / 77 page

STPMC1

Theory of operation

Doc ID 15728 Rev 6

41/77

Equation 4

phc is the phase compensation in degree,

KPHC is the calculated coefficient,

fline is the frequency of voltage signal,

fphc is the clock for phase compensation.

The clock for phase compensation fphc can be derived as reported in Table 23 and Table 24

Table 23.

fphc frequency settings

MDIV (1 bit)

PM (1 bit)

HSA (1 bit)

fCLK

fXTAL1 / 8

fXTAL1 / 4

fXTAL1 / 2

fXTAL1 / 4

Table 24.

fphc frequency values

fXTAL1

PM (1 bit)

HSA (1 bit)

fCLK

4.194 MHz

524 kHz

4.195 MHz

614 kHz

8.192 MHz

1.024 MHz

9.830 MHz

1.229 MHz

4.194 MHz

1.049 MHz

4.195 MHz

1.229 MHz

8.192 MHz

2.048 MHz

9.830 MHz

2.458 MHz

4.194 MHz

2.097 MHz

4.195 MHz

2.458 MHz

8.192 MHz

2.048 MHz

9.830 MHz

2.458 MHz

Table 25.

fphc frequency settings for PM = 1

fXTAL1

fphc

4.194 MHz

2.097 MHz

4.915 MHz

2.458 MHz

8.192 MHz

2.048 MHz

9.830 MHz

2.458 MHz

phc

line

PHC

phc

360

⋅

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