SLUSF73 Data sheet

SLUSF73 august 2023 TPSM8S6C24

PRODUCTION DATA

Package Options

Mechanical Data (Package|Pins)

MOY|45
- MPQF759

Thermal pad, mechanical data (Package|Pins)

Orderable Information

8.6.50 (62h) TON_MAX_FAULT_LIMIT

CMD Address	62h
Write Transaction:	Write Word
Read Transaction:	Read Word
Format:	SLINEAR11 per CAPABILITY
Phased:	No
NVM Back-up:	EEPROM
Updates:	On-the-fly

The TON_MAX_FAULT_LIMIT command sets an upper limit, in milliseconds, on how long the unit can attempt to power up the output without reaching the target voltage.

The TON_MAX time is defined as the maximum allowable amount of time from the end of TON_DELAY, until the output voltage reaches 85% of the programmed output voltage, as sensed by the READ_VOUT telemetry at VOSNS - GOSNS.

Note that for the TPSM8S6C24, the undervoltage fault limit is enabled at the end of TON_RISE. As a consequence, unless VOUT_UV_FAULT_RESPONSE is set to ignore, in the case of a “real” TON_MAX fault (for example, output voltage did not rise quickly enough), UV faults / associated response will always precede TON_MAX.

The converter response to a TON_MAX fault event is described in TON_MAX_FAULT_RESPONSE.

Figure 8-56 (62h) TON_MAX_FAULT_LIMIT Register Map

15	14	13	12	11	10	9	8
RW	RW	RW	RW	RW	RW	RW	RW
TONMAXF_EXP					TONMAXF_MAN

7	6	5	4	3	2	1	0
RW	RW	RW	RW	RW	RW	RW	RW
TONMAXF_MAN

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

Table 8-67 Register Field Descriptions

Bit	Field	Access	Reset	Description
15:11	TONMAXF_ EXP	RW	11111b	Linear format two’s complement exponent
10:0	TONMAXF_ MAN	RW	NVM	Linear format two’s complement mantissa

Attempts to write (62h) TON_MAX_FAULT_LIMIT will be considered an invalid/unsupported command and cause the TPSM8S6C24 to respond by flagging the appropriate status bits and notifying the host according to the PMBus 1.3.1 Part II specification section 10.9.3. TON_MAX_FAULT_LIMIT supports values from 0 ms to 127 ms in 0.5-ms steps.

*Note: programming TON_MAX_FAULT to 0 ms disables the TON_MAX functionality.