MPM54313 datasheet(21/49 Pages) MPS

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MPM54313

– 16V, TRIPLE 3A POWER MODULE WITH I2C

MPM54313 Rev. 1.0

MonolithicPower.com

5/7/2024

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

STATUS REGISTERS

The status registers (STATUS_0 and STATUS_1) are updated to 1 if the relevant event occurs. The

status registers remain set to 1, even if the failing condition is no longer present, until the clear command

is generated by the host. In addition, if VIN falls below its UVLO threshold, the status register is initialized

to 0. The PWR_GOOD interrupt may be generated by the MPM54313 at the same time that VIN falls

below its UVLO threshold depending on the type of event. The interrupts are only generated if they are

not masked.

All read-only (RO) registers are one-time latched registers. In other words, once the MPM54313 sets

those register flags, the host must explicitly clear those registers appropriately. The MPM54313 does not

automatically update the registers on its own, even if the event that triggered the status is no longer

present.

STATUS_0 (00h)

Format: Unsigned binary

The STATUS_0 command monitors the over-temperature (OT), buck output power not good, and VIN

over-voltage (OV) statuses.

Bits

Access

Bit Name

Default

Description

RESERVED

N/A

Reserved.

OVER_TEMP_STATUS

1’b0

’b0: No critical temperature shutdown has occurred

1’b1: A critical temperature shutdown has occurred

BUCK_A_POWER_NOT_

GOOD

_STATUS

1’b0

’b0: Buck A’s output power is good

’b1: Buck A’s output power is not good

BUCK_B_POWER_NOT_

GOOD_STATUS

1’b0

1’b0: Buck B’s output power is good

’b1: Buck B’s output power is not good

BUCK_C_POWER_NOT_

GOOD_STATUS

1’b0

1’b0: Buck C’s output power is good

’b1: Buck C’s output power is not good

RESERVED

N/A

Reserved.

VIN_OV_STATUS

1’b0

1’b0: No VIN OV condition has occurred

1’b1: A VIN OV condition has occurred

RESERVED

N/A

Reserved.

STATUS_1 (01h)

Format: Unsigned binary

The STATUS_1 command monitors the buck output

s’ over-voltage (OV) and under-voltage (UV) statuses.

Bits

Access

Bit Name

Default

Description

BUCK_A_OV_STATUS

1’b0

1’b0: No buck A output OV condition has occurred

1’b1: A buck A output OV condition has occurred

BUCK_B_OV_STATUS

1’b0

1’b0: No buck B output OV condition has occurred

1’b1: A buck B output OV condition has occurred

BUCK_C_OV_STATUS

1’b0

1’b0: No buck C output OV condition has occurred

1’b1: A buck C output OV condition has occurred

RESERVED

N/A

Reserved.

BUCK_A_UV_STATUS

1’b0

1’b0: No buck A output UV condition has occurred

1’b1: A buck A output UV condition has occurred

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