SLUSF27 Data sheet

SLUSF27 November 2023 TPS546B24S

PRODUCTION DATA

Package Options

Mechanical Data (Package|Pins)

RVF|40
- MPQF268C

Thermal pad, mechanical data (Package|Pins)

RVF|40
- QFND333E

Orderable Information

6.6.89 (FBh) MFR_SPECIFIC_43 (EXT_WRITE_PROTECT)

CMD Address	FBh
Write Transaction:	Write Word
Read Transaction:	Read Word
Format:	Unsigned Binary (2 bytes)
Phased:	No
NVM Back-up:	EEPROM
Updates:	At Boot-up

EXT_WRITE_PROTECT provides the user with greater resolution to Write Protect features than the Standard PMBus Function. Each bit in the EXT_WRITE_PROTECT provides individual and independent WRITE_PROTECTION.

Figure 6-95 (FBh) MFR_SPECIFIC_43 (EXT_WRITE_PROTECT) Register Map

15	14	13	12	11	10	9	8
RW	RW	RW	RW	RW	RW	RW	RW
HWP	WP	TRIM	VOUT	VOF	WN	ITF	MAR

7	6	5	4	3	2	1	0
RW	RW	RW	RW	RW	RW	RW	RW
OP	CFG	VIN	SEQ	DAT	BOT	PSK	STR

LEGEND: R/W = Read/Write; R = Read only

Table 6-106 Register Field Descriptions

Bit	Field	Access	Reset	Description
15	HWP	RW	NVM	Command List: EXT_WRITE_PROTECT (This command), PASSKEY 0b: Commands are Writable unless: a. EXT_WRITE_PROTECT is Write Protected by PASSKEY b. PASSKEY is Write Protected by EXT_WRITE_PROTECT[1] 1b: Commands are Read Only (if stored to NVM, this will permanently lock EXT_WRITE_PROTECT)
14	WP	RW	NVM	Command List: WRITE_PROTECT (Standard PMBus Command) 0b: Commands are Writable (No other command controls write access to WRITE_PROTECT 1b: Commands are Read Only
13	TRIM	RW	NVM	Command List: VOUT_TRIM, VOUT_SCALE_LOOP, IOUT_CAL_GAIN, IOUT_CAL_OFFSET 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
12	VOUT	RW	NVM	Command List: VOUT_MODE, VOUT_COMMAND 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
11	VOF	RW	NVM	Command List: VOUT_MAX, VOUT_OV_FAULT_LIMIT, VOUT_OV_FAULT_RESPONSE, VOUT_UV_FAULT_LIMIT, VOUT_UV_FAULT_RESPONSE, VOUT_MIN 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
10	WN	RW	NVM	Command List: VOUT_OV_WARN_LIMIT, VOUT_UV_WARN_LIMIT, IOUT_OC_WARN_LIMIT, OT_WARN_LIMIT, SMBALERT_MASK 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
9	ITF	RW	NVM	Command List: IOUT_OC_FAULT_LIMIT, IOUT_OC_FAULT_RESPONSE, OT_FAULT_LIMIT, OT_FAULT_RESPONSE, SIMULATE_FAULTS 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
8	MAR	RW	NVM	Command List: VOUT_MARGIN_HIGH, VOUT_MARGIN_LOW, VOUT_TRANSITION_RATE 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
7	OP	RW	NVM	Command List: OPERATION 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
6	CFG	RW	NVM	Command List: FREQUENCY_SWITCH, INTERLEAVE, COMPENSATION_CONFIG, TRANSIENT_REDUCTION_CONFIG, TELEMETRY_CONFIG, POWER_STAGE_CONFIG, PGOOD_CONFIG, SYNC_CONFIG, MISC_OPTIONS, STACK_CONFIG 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
5	VIN	RW	NVM	Command List: VIN_UV_WARN_LIMIT, VIN_OV_FAULT_LIMIT, VIN_OV_WARN_LIMIT, VIN_OV_FAULT_RESPONSE 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
4	SEQ	RW	NVM	Command List: TON_DELAY, TON_RISE, TON_MAX_FAULT_LIMIT, TON_MAX_FAULT_RESPONSE, TOFF_DELAY, TOFF_FALL, and ON_OFF_CONFIG, VIN_ON, VIN_OFF 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
3	DAT	RW	NVM	Command List: MFR_ID, MFR_MODEL, MFE_REVISION, MFR_SERIAL 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only
2	BOT	RW	NVM	Command List: PIN_DETECT_OVERRIDE, PMBUS_ADDRESS 0b: Command are Writable unless Read Only from WRITE_PROTECT 1b: Commands are Read Only
1	PSK	RW	NVM	Command List: PASSKEY 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only Note: Because PASSKEY write protects EXT_WRITE_PROTECT when PASSKEY != 0000h, setting this bit when PASSKEY != 0000h and storing to NVM permanently locks access to EXT_WRITE_PROTECT. Setting this bit when PASSKEY is set to 0000h prevents the programming of a PASSKEY value.
0	STR	RW	NVM	Command List: STORE_USER_ALL 0b @ Power On Reset: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 0b @ RESTORE: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 0b at All other Times: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 1b @ Power On Reset: Commands are Read Only 1b @ RESTORE: Commands are Read Only