数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

PAC1932/3/4 数据表(PDF) 24 Page - Microchip Technology

部件名 PAC1932/3/4
功能描述  Multi-Channel DC Power/Energy Monitor with Accumulator
PDF  62 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PAC1932/3/4 数据表(HTML) 24 Page - Microchip Technology

Back Button PAC1932/3/4 Datasheet HTML 20Page - Microchip Technology PAC1932/3/4 Datasheet HTML 21Page - Microchip Technology PAC1932/3/4 Datasheet HTML 22Page - Microchip Technology PAC1932/3/4 Datasheet HTML 23Page - Microchip Technology PAC1932/3/4 Datasheet HTML 24Page - Microchip Technology PAC1932/3/4 Datasheet HTML 25Page - Microchip Technology PAC1932/3/4 Datasheet HTML 26Page - Microchip Technology PAC1932/3/4 Datasheet HTML 27Page - Microchip Technology PAC1932/3/4 Datasheet HTML 28Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 24 / 62 page
background image
PAC1932/3/4
DS20005850C-page 24
 2017-2018 Microchip Technology Inc.
4.9
Power and Energy
The Full-Scale Range for Power depends on the
external
sense
resistor
used,
as
shown
in
Equation 4-5
.
EQUATION 4-5:
POWER FSR
CALCULATION
The device implements Power measurements by
multiplying VBUS and the VSENSE to give a result
VPOWER. VPOWER values are used to calculate
Proportional Power as shown in Equation 4-6. The
Proportional Power is the fractional portion of Power
FSR measured in one sample. Bipolar mode is where
VBUS is bipolar mode, VBUS is bidirectional mode, or
both VBUS and VSENSE are bipolar/bidirectional.
EQUATION 4-6:
PROPORTIONAL POWER
CALCULATION
To calculate the actual power from the Proportional
Power, multiply by the Power FSR as shown in
Equation 4-7
. This Actual Power number is the power
measured in one sample.
EQUATION 4-7:
POWER CALCULATION
These VPOWER results are digitally accumulated on
chip, and stored in the VACCUM registers.
The energy calculation Equations 4-8 and 4-9 use a
different denominator term depending on unipolar or
bipolar mode. Bipolar mode for energy applies when
bipolar/bidirectional mode is used for VBUS and/or
VSENSE. Equation 4-8 shows how to realize this using
the Accumulator results, Accumulator count and the
accumulation period, T. In this equation, T must be
known from a system clock time stamp or other
accurate indicator of the total accumulation period.
EQUATION 4-8:
ENERGY CALCULATION
EQUATION 4-9:
ENERGY CALCULATION
Equation 4-9
shows how to calculate energy using the
accumulated power and the sampling rate, f
s.
PowerFSR
100 mV R
SEN SE
 32V
=
Where:
RSENSE =External RSENSE resistor value
100 mV = Full-Scale VSENSE voltage input
32V = Full-Scale VBUS voltage input
3.2V
2
R
SEN SE
=
P
PROP
Vpower
Denominator
-----------------------------------
=
Where:
Denominator =
=
228 (unipolar mode)
227 (bipolar mode)
P
ac tual
PowerFSR
P
PROP
=
Energy
Vaccum

Denominator
-----------------------------------
PwrFSR

T
AccCount
--------------------------
=
Where:
Denominator = 228 (unipolar mode)
=227 (bipolar mode)
Energy
V accum

Denominator
-----------------------------------
PwrFSR

fs
--------------------------
=
Where:
Denominator = 228 (unipolar mode)
=227 (bipolar mode)



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com