ZHCSRU8 February 2024
PRODUCTION DATA
| 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 |
| 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 |
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 2N+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 2N+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: Intput Overvoltage Fault can assert PGOOD low. 1b: Intput 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.