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MP2884A Datasheet(PDF) 83 Page - Monolithic Power Systems

No. de pieza MP2884A
Descripción Electrónicos  Digital, Multi-Phase PWM Controller with PMBus and PWM-VID
PDF  107 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2884A Datasheet(HTML) 83 Page - Monolithic Power Systems

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MP2884A – DIGITAL PWM CONTROLLER WITH PMBUS AND PWM-VID
MP2884A Rev. 1.01
www.MonolithicPower.com
83
12/25/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
Bits
Bit Name
Description
7:0
VIN_SENSE_SCALE
Parameter used to set the input voltage sensing scale.
INSEN
BOTTOM
IN
TOP
BOTTOM
1024 V
1024 R
VIN_SENSE_SCALE=
=
VR
+ R

MFR_TEMP_GAIN_OFFSET (C1h)
This register sets the gain and offset for temperature sensing via VTEMP.
Command
MFR_TEMP_GAIN_OFFSET
Format
Unsigned binary
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Access
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Function
x
VTEMP_OFFSET
VTEMP_GAIN
Bits
Bit Name
Description
15
RESERVED
Unused. X indicates that writes are ignored and reads are always 0.
14:8
VTEMP_OFFSET
Offset used to report the temperature from VTEMP:
DrMOS_TEMP_OFFSET
VTEMP_OFFSET =
DrMOS_TEMP_GAIN
Assuming that:
VTEMP = DrMOS_TEMP_GAIN Temperature - DrMOS_TEMP_OFFSET
7:0
VTEMP_GAIN
Gain used to report the temperature from VTEMP. VTEMP has an internal 1/2
divider before ADC:
9
2 1.6 2
1000
VTEMP_GAIN =
DrMOS_TEMP_GAIN 1024

Assuming that:
VTEMP = DrMOS_TEMP_GAIN Temperature - DrMOS_TEMP_OFFSET
MFR_CUR_GAIN (C2h)
This register sets the gain for phase-current sensing.
Command
MFR_CUR_GAIN
Format
Unsigned binary
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Access
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Function
x
x
x
x
x
x
PHASE_CUR_GAIN
Bits
Bit Name
Description
15:10
RESERVED
Unused. X indicates that writes are ignored and reads are always 0.
9:0
PHASE_CUR_GAIN
Gain for phase-current sensing.
PHASE_CUR_GAIN = KCS x RCS x 213 (PHASE_CURRENT_RESOLUTION = 0)
PHASE_CUR_GAIN = KCS x RCS x 214 (PHASE_CURRENT_RESOLUTION = 1)
Where RCS is the phase-current sensing resistor, and KCS is the current sensing
gain of the DrMOS.



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