MP2886A datasheet(32/113 Pages) MPS

32 / 113 page

MP2886A – DIGITAL PWM CONTROLLER WITH PMBUS AND PWM-VID

MP2886A Rev. 1.0

www.MonolithicPower.com

1/21/2019

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

Table 8: Registers Related to Total Current

Report Rate

MFR_SYS_CONFIG

(44h) Bit[3]

1’b0

1’b1

Output current (8Ch)

0.25A/LSB

0.5A/LSB

Output power (96h)

0.5W/LSB

1W/LSB

Input power (97h)

POUT_OP_WARN_LIMIT

(6Ah)

1W/LSB

2W/LSB

IOUT_OC_WARN_LIMIT

(4Ah)

1A/LSB

2A/LSB

MFR_APS_LEVLE

(E3h~E7h)

MFR_APS_HYS (E8h)

OCP_THRESHOLD (ECh)

IOUT_CAL_GAIN (38h)

Refer to register map

IOUT_CAL_OFFSET (39h)

Table 9: Registers Related to Phase Current

Report Rate

MFR_SYS_CONFIG

(44h) Bit[4]

1’b0

1’b1

Phase current (73h~77h)

MFR_OCP_PHASE (EDh)

1A/LSB

2A/LSB

MFR_CUR_GAIN (C2h)

Refer to register map

MFR_CS_OFFSET

(4Ch~4Eh)

PMBus Write Protection

The MP2886A supports PMBus write protection

(WP) by entering a 16-bit password in register

MFR_USER_PWD (04h). Store the password to

the EEPROM, and after the power-on reset, no

correct password is entered.

Note that if an incorrect password is entered, the

MP2886A disables the PMBus write function

until the VDD33 supply toggles.

The correct password can be entered only once.

If the password is sent more than once, correct

or incorrect, the MP2886A disables the PMBus

write function until the VDD33 supply toggles.

Set the register MFR_USER_PWD (04h) to

0x0000 if the password function is not needed.

MP2886A Datasheet(PDF) 32 Page - Monolithic Power Systems

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