MP8796B datasheet(41/52 Pages) MPS

41 / 52 page

MP8796B – 16V, 30A, SYNC STEP-DOWN CONVERTER WITH PMBUSTM

MP8796B Rev 1.0

www.MonolithicPower.com

1/19/2020

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

[10]

RESERVED

Always read as 0.

[9]

RESERVED

Always read as 0.

[8]

UNKNOWN

Latched

0: No other fault has occurred

1: A fault type not specified in bit[15:1] of STATUS_

WORD has been detected.

Low

Byte

STATUS_BYTE

STATUS BYTE is the low byte of STATUS WORD.

STATUS_VOUT (7Ah)

The STATUS_VOUT command returns one data byte with contents as follows.

Bits

Name

Behavior

Default

Description

[7]

VOUT_OV_FAULT

Live

0: No output OV fault

1: Output OV fault

[6]

RESERVED

Latched

Always read as 0.

[5]

RESERVED

Latched

Always read as 0.

[4]

VOUT_UV_FAULT

Live

0: No output UV fault

1: Output UV fault

[3]

VOUT_MAX_MIN

Live

0: No VOUT_MAX, VOUT_MIN warning

1: An attempt has been made to set the output voltage to

a value above that allowed by the VOUT_MAX command

or below the limit allowed by the VOUT_MIN command

[2]

RESERVED

Always read as 0.

[1]

RESERVED

Always read as 0.

[0]

UNKNOWN

Latched

0: No other fault has occurred

1: A fault type not specified in bit[15:1] of STATUS_

WORD has been detected

STATUS_IOUT (7Bh)

Command

STATUS_IOUT

Format

Unsigned binary

Bit

Access

Function

IOUT_OC

IOUT_OC & VOUT_UV

IOUT_OC_WARNING

Default Value

STATUS_INPUT (7Ch)

The STATUS_INPUT returns the value of the flags indicating the input voltage status of the MP8796B.

To clear the bits in this register, the underlying fault or warning should be removed and a

CLEAR_FAULTS command should be issued.

Bits

Name

Behavior

Default Set

Description

[7]

VIN_OV_FAULT

R, latched

0: No over-voltage detected on the OV pin

1: Over-voltage detected on the OV pin

[6]

VIN_OV_WARN

R, latched

0: No over-voltage condition on VIN

1: Over-voltage condition on VIN has occurred

[5]

VIN_UV_WARN

R, latched

0: No under-voltage condition on VIN

1: Under-voltage condition on VIN has occurred

[4:0]

RESERVED

Always read as 0000.

MP8796B Datasheet(PDF) 41 Page - Monolithic Power Systems

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