MP3924 datasheet(47/56 Pages) MPS

47 / 56 page

MP3924

– QUAD-PORT IEEE 802.3AF/AT PSE CONTROLLER

MP3924 Rev. 1.0

MonolithicPower.com

7/16/2021

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

ADC RESULT REGISTERS

PORT_1_CURRENT (40h and 41h)

Read-only

Bits

Bit Name

Default Value

Description

(40h)

D[0]

PORT_1_

CURRENT_DATA

Returns the lower bit of port 1

’s ADC current result.

41h

D[7:0]

0000 0000

Returns the higher bits of port 1

’s ADC current result.

The output current can be calculated with the following equation:

Output current = 2.4mA x COUNT - 10mA

Where COUNT is the unsigned binary integer of the ADC result.

PORT_1_VOLTAGE (42h and 43h)

Read-only

Bits

Bit Name

Default Value

Description

42h

D[0]

OUT1_

PIN_

VOLTAGE

_DATA

Returns the lower bit of port 1

’s ADC voltage result.

43h

D[7:0]

0000 0000

Returns the higher bits of port 1

’s ADC voltage result.

The sum of these two registers is the OUT1 pin voltage. The port output voltage

can be calculated with the following equation:

Output voltage = 0.15V x (VIN COUNT - OUT1 COUNT)

Where COUNT is the unsigned binary integer of the ADC result.

PORT_2_CURRENT (44h and 45h)

Read-only

Bits

Bit Name

Default Value

Description

44h

D[0]

PORT_2_

CURRENT_

DATA

Returns the lower bit of port 2’s ADC current result.

45h

D[7:0]

0000 0000

Returns the higher bits of port

2’s ADC current result.

The output current can be calculated with the following equation:

Output current = 2.4mA x COUNT - 10mA

Where COUNT is the unsigned binary integer of the ADC result.

PORT_2_VOLTAGE (46h and 47h)

Read-only

Bits

Bit Name

Default Value

Description

46h

D[0]

OUT2_PIN_

VOLTAGE_

DATA

Returns the lower bit o

f port 2’s ADC voltage result.

47h

D[7:0]

0000 0000

Returns the higher bits of port 2

’s ADC voltage result.

The sum of these two registers is the OUT2 pin voltage. The port output voltage

can be calculated with the following equation:

Output voltage = 0.15V x (VIN COUNT - OUT2 COUNT)

Where COUNT is the unsigned binary integer of the ADC result.

MP3924 Datasheet(PDF) 47 Page - Monolithic Power Systems

MP3924 Datasheet(HTML) 47 Page - Monolithic Power Systems

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

Datasheet Download

Link URL