ZHCSNL3A December 2021 – November 2023 TPSM8D6C24
PRODUCTION DATA
| CMD Address | 02h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| Phased: | No |
| NVM Backup: | EEPROM |
| Updates: | On-the-fly |
The (02h) ON_OFF_CONFIG command configures the combination of enable pin input and serial bus commands needed to enable or disable power conversion, including how the unit responds when power is applied to PVIN.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R | R | RW | RW | RW | RW | RW |
| 0 | 0 | 0 | PU | CMD | CP | POLARITY | DELAY |
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7:5 | Reserved | R | 000b | Not used and always set to 0. |
| 4 | PU | RW | NVM | 0b: Unit starts power conversion any time the input power is
present, regardless of the state of the CONTROL
pin. 1b: Act on CONTROL. Use the (01h) OPERATION command to start or stop power conversion, or both. |
| 3 | CMD | RW | NVM | 0b: Ignore the (01h) OPERATION
command to start or stop power conversion. 1b: Act on the (01h) OPERATION command (and the CONTROL pin if configured by CP) to start or stop power conversion. |
| 2 | CP | RW | NVM | 0b: Ignore the CONTROL pin to start or stop power conversion. The
UVLO function of the EN/UVLO pin is not active
when CONTROL pin is ignored. 1b: Act on the CONTROL pin (and the (01h) OPERATION command) if configured by bit [3]) to start or stop power conversion. |
| 1 | POLARITY | RW | NVM | 0b: CONTROL pin has active low polarity. The UVLO function of the
EN/UVLO pin cannot be used when CONTROL has active
load polarity. 1b: The CONTROL pin has active high polarity. |
| 0 | DELAY | RW | NVM | 0b: When power conversion is commanded OFF by the CONTROL pin
(must be configured to respect the CONTROL pin as
above), continue regulating for the (64h) TOFF_DELAY
time, then ramp the output voltage to 0 V, in the
time defined by (65h) TOFF_FALL. 1b: When power conversion is commanded OFF by the CONTROL pin (must be configured to respect the CONTROL pin as above), stop power conversion immediately. |
For the purposes of (02h) ON_OFF_CONFIG, the device pin EN/UVLO is the CONTROL pin.
Attempts to write (02h) ON_OFF_CONFIG to any value other than those explicitly listed above are considered invalid or unsupported data and cause the TPSM8D6C24 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.