STEVAL-IPE010V1 STMicroelectronics, STEVAL-IPE010V1 Datasheet - Page 38

• Manufacturer Part Number: STEVAL-IPE010V1
• Description: KIT DEMO ENERGY METER STPMC1/S1
• Manufacturer: STMicroelectronics
• Type: Other Power Managementr

Specifications of STEVAL-IPE010V1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: No
• Utilized Ic / Part: STPMC1, STPMS1
• Maximum Operating Temperature: + 85 C
• Product: Power Management Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: STPMC1, STPMS1
• Other names: 497-10754

Theory of operation
Figure 13. Phase delay
38/77
The ACR, ACS and ACT registers (bits [7:0], see paragraph 9.17.7) holds the information
needed for this calculation.
Let us indicate t
Equation 1
t
Concatenating ACT[7:0], ACS[7:0], ACR[7:0] bytes, two 12 bits vectors defined as below are
obtained:
ACT[7:0], ACS[7:0], ACR[7:0] = Asr[12, 10:0], Art[12, 10:0]
The delay times are calculated with the following formulas:
Equation 2
Equation 3
From
and t
RS
+ t
TR
Equation 1
ST
.
t
t
RS
RS
+ t
TR
= T = 1 /
RS
,
Equation 2
, t
t
t
time
ST
ST
time
ST
, t
Asr
Art
TR
, the delays between R, S and T phases. It is:
t
t
t
t
ST
and
RS
TR
TR
Doc ID 15728 Rev 4
t
Equation 3
t
TR
ST
⎛
⎜
⎝
⎛
⎜
⎝
Asr
Art
10
10
it is possible to retrieve phase delays t
0 :
0 :
2
2
11
11
Art
Asr
12
12
1
1
⎞
⎟
⎠
⎞
⎟
⎠
f
MCLK
f
MCLK
8
8
STPMC1
RS
, t
ST