MP8796B datasheet(34/52 Pages) MPS

34 / 52 page

MP8796B – 16V, 30A, SYNCHRONOUS STEP-DOWN CONVERTER WITH PMBUS

MP8796B Rev. 1.0

www.MonolithicPower.com

1/19/2020

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

The following registers can be stored using STORE_USER_ALL.



OPERATION (01h)



TOFF_DELAY (64h)



ON_OFF_CONFIG (02h)



MFR_REVISION (9Bh)



WRITE_PROTECT (10h)



MFR_4_DIGIT (9Dh)



VOUT_COMMAND (21h)



MFR_CTRL_COMP (D0h)



VOUT_MAX (24h)



MFR_CTRL_VOUT (D1h)



VOUT_MARGIN_HIGH (25h)



MFR_CTRL_OPS (D2h)



VOUT_MARGIN_LOW (26h)



MFR_ADDR_PMBUS (D3h)



VOUT_SCALE_LOOP (29h)



MFR_VOUT_OVP_FAULT_LIMIT (D4h)



VOUT_MIN (2Bh)



MFR_OVP_NOCP_SET (D5h)



VIN_ON (35h)



MFR_OT_OC_SET (D6h)



VIN_OFF (36h)



MFR_OC_PHASE_LIMIT (D7h)



OT_FAULT_LIMIT (4Fh)



MFR_HICCUP_ITV_SET (D8h)



OT_WARN_LIMIT (51h)



MFR_UVP_PGOOD_ON_LIMIT (D9h)



VIN_OV_FAULT_LIMIT (55h)



MFR_VOUT_STEP (DAh)



VIN_OV_WARN_LIMIT (57h)



MFR_LOW_POWER (E5h)



VIN_UV_WARN_LIMIT (58h)



MFR_CTRL (EAh)



TON_DELAY (60h)



MFR_LOW_POWER (E5h)



TON_RISE (61h)



MFR_CTRL (EAh)

RESTORE_USER_ALL (16h)

The RESTORE_USER_ALL command instructs the MP8796B to copy the entire contents of the MTP

values to the matching locations in the registers. The values in the registers are overwritten by the

value retrieved from the MTP. Any items in the MTPs that do not have matching locations in the

operating memory are ignored.

The RESTORE_USER_ALL command can be used while the MP8796B is operating. However, this is

not recommended as the MP8796B may be unresponsive during the operation with unpredictable

results.

This command is write-only.

CAPABILITY (19h)

The CAPABILITY command returns information about the PMBus functions supported by the MP8796B.

This command is read with the PMBus read byte protocol.

Command

CAPABILITY

Format

Unsigned binary

Bit

Access

Function

PEC

Max bus speed

Alert

Default Value

PEC supported, max speed 1MHz, supports PMBus alert and ARA.

Bit[6:5] Value

Meaning

Maximum supported bus speed is 100kHz.

Maximum supported bus speed is 1MHz.

Maximum supported bus speed is 400kHz.

Reserved.

The default value of 19h is 0xB0.

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