MP5990 datasheet(67/72 Pages) MPS

67 / 72 page

MP5990

– 16V, 50A, 1mΩ, INTELLIGENT HOT-SWAP SOLUTION WITH PMBUS

MP5990 Rev. 1.1

MonolithicPower.com

4/19/2024

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

RESERVED

Unused. X indicates that writes are ignored and reads are always 0.

OTP_CONTROLLER_

FAULT

Indicates whether the controller experiences an over-temperature (OT) fault.

Once the controller’s temperature exceeds its OT threshold, this bit is set.

1’b0: No controller OT fault has occurred

1’b1: A controller OT fault has occurred

MAX_SS_FAULT

Indicates whether the slave experiences a maximum SS fault. If the SS pin is still

low when the maximum soft start time ends, this bit is set.

1’b0: No maximum SS fault has occurred

1’b1: A maximum SS fault has occurred

RESERVED

Unused. X indicates that writes are ignored and reads are always 0.

VIN_OV_FAULT

VIN over-voltage (OV) fault indicator. If the sensed VIN exceeds the VIN OV fault

limit, this bit is set.

1’b0: No VIN OV fault has occurred

1’b1: A VIN OV fault has occurred

RESERVED

Unused. X indicates that writes are ignored and reads are always 0.

SLAVE_GOK_FAULT

Indicates whether a slave GOK fault has occurred. If a slave has faults, GOK

pulls low and this bit is set.

1’b0: No slave faults have occurred

1’b1: A slave fault has occurred

IOUT_OC_FAULT

Indicates whether an IOUT over-current (OC) fault has occurred. If IOUT OCP

occurs, this bit is set and latched. Send a CLEAR_FAULTS (03h) command to

reset this bit.

1’b0: No IOUT OC fault has occurred

1’b1: An IOUT OC fault has occurred

VIN_UVLO_FAULT

Indicates whether a VIN under-voltage (UV) fault has occurred. C4h, bit[7] selects

whether to report this fault. If the sensed VIN falls below the VIN falling threshold

after EN pulls high, this bit is set.

1’b0: No VIN UV fault has occurred

1’b1: A VIN UV fault has occurred

OT_SENSED_FAULT

Indicates whether an over-temperature (OT) fault has occurred. If the

temperature

sensed

via

VTEMP

exceeds

the

fault

limit

set

OT_FAULT_LIMIT (4Fh), this bit is set.

1’b0: No sensed OT fault has occurred

1’b1: A sensed OT fault has occurred

2:0

FAULT_TYPE

FAULT_TYPE has six types:

3’b00x: No fault

3’b010: GOK fault

3’b011: FET DS/GS short fault

3’b100: Over-temperature fault (145°C limit) or OV fault (18.5V OV limit)

3’b101: VCS based on OC fault

3’b110: Short-circuit fault

CLEAR_MTP_FAULT (FEh)

The CLEAR_MTP_FAULT command clears the NVM fault. The NVM fault contains the signature fault

and CRC fault. When restoring information from the NVM, there may be an NVM signature fault or a

CRC fault. If this command is sent, the device ignores any faults and the system operates normally.

MP5990 Datasheet(PDF) 67 Page - Monolithic Power Systems

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