SLUSF28 Data sheet

SLUSF28 November 2023 TPS546A24S

PRODUCTION DATA

Package Options

Mechanical Data (Package|Pins)

RVF|40
- MPQF268C

Thermal pad, mechanical data (Package|Pins)

RVF|40
- QFND333E

Orderable Information

6.6.80 (E3h) MFR_SPECIFIC_19 (PGOOD_CONFIG)

CMD Address	E3h
Write Transaction:	Write Word
Read Transaction:	Read Word
Format	Unsigned Word
Phased:	No
NVM Backup:	EEPROM or Pin Detect
Updates:	Conversion Disable: see below. Conversion Enable: Read-Only

Figure 6-86 (E3h) MFR_SPECIFIC_19 (PGOOD_CONFIG) Register Map

15	14	13	12	11	10	9	8
R	R	R	R	R	R	R	R
PGOOD_OFF_DELAY[3:0]				PGOOD_ON_DELAY[3:0]
7	6	5	4	3	2	1	0
R	R	R	R	RW	RW	RW	RW
pgmOVF	pgmOVW	pgmUVW	pgmUVF	pgmOCW	pgmOCF	pgmINOVW	pgmINOVF

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

Table 6-97 Register Field Descriptions

Bit	Field	Access	Reset	Description
15:12	PGOOD_OFF_DELAY[3:0]	RW	NVM	Sets Delay from the detection of an unmasked Fault or Warning event to the assertion of PGOOD low. 0d: Delay PGOOD high-low 1 PWM CLK 1d-15d: Delay PGOOD high-low 2^N+1 PWM CLKs
11:8	PGOOD_ON_DELAY[3:0]	RW	NVM	Sets Delay from the detection of no unmasked Fault or Warning events to the release of PGOOD low. 0d: Delay PGOOD low-hight to 1 PWM CLK 1d-15d: Delay PGOOD low-high 2^N+1 PWM CLKs
7	pgmOVF	RW	NVM	0b: Output Overvoltage Fault can assert PGOOD low. 1b: Output Overvoltage Fault cannot assert PGOOD low.
6	pgmOVW	RW	NVM	0b: Output Overvoltage Warning can assert PGOOD low. 1b: Output Overvoltage Warning cannot assert PGOOD low.
5	pgmUVF	RW	NVM	0b: Output Undervoltage Fault can assert PGOOD low. 1b: Output Undervoltage Fault cannot assert PGOOD low.
4	pgmUVW	RW	NVM	0b: Output Undervoltage Warning can assert PGOOD low. 1b: Output Undervoltage Warning cannot assert PGOOD low.
3	pgmOCW	RW	NVM	0b: Output Overcurrent Warning can assert PGOOD low. 1b: Output Overcurrent Warning cannot assert PGOOD low.
2	pgmOCF	RW	NVM	0b: Output Overcurrent Fault can assert PGOOD low. 1b: Output Overcurrent Fault cannot assert PGOOD low.
1	pgmINOVW	RW	NVM	0b: Input Overvoltage Warning can assert PGOOD low. 1b: Input Overvoltage Warning cannot assert PGOOD low.
0	pgmINOVF	RW	NVM	0b: Input Overvoltage Fault can assert PGOOD low. 1b: Input Overvoltage Fault cannot assert PGOOD low.

Power Good indicates the status of the converter. (E3h) MFR_SPECIFIC_19 (PGOOD_CONFIG) provides control of the delays asserting and releasing Power Good. Power Good is always low while conversion is disabled, during (60h) TON_DELAY, (61h) TON_RISE, (65h) TOFF_FALL, and during a fault shut-down or hiccup delay. PGOOD_OFF_DELAY is bypassed during (65h) TOFF_FALL and during a fault shut-down or hiccup. Power Good will still be asserted on an unmasked fault event unless that fault's RESPONSE command is configured to Continue Operating without Interruption.

PGOOD_OFF_DELAY and PGOOD_ON_DELAY are sensed and timed independently from each other. If PGOOD_ON_DELAY is less than PGOOD_OFF_DELAY and an unmasked fault or warning event lasts less than PGOOD_OFF_DELAY - PGOOD_ON_DELAY, Power Good will not be asserted low during the fault or warning events.