ZHCSGO0A June 2017 – February 2024 TPS549B22
PRODUCTION DATA
請參考 PDF 數據表獲取器件具體的封裝圖。
The MFR_SPECIFIC_03 register allows the user to read the configuration of the pin-strap feature (and/or overwrite it), as well configure the Ramp Generator and the PWM switching frequency.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| D-CAP3 | 0 | RCSP | 0 | FS | |||
| R/W | R | R/W | R | R/W | |||
| LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 7 | D-CAP3 | R/W | P | This bit allows the user to read/configure the device’s internal DCAP-3 control mode. It is initially loaded and reflects the value of the pin strap, but can also be overwritten by PMBus. 0: Internal D-CAP3 is disabled (ramp injection is off). 1: Internal D-CAP3 is enabled (ramp injection is on) |
| 6 | R | 0 | ||
| 5:4 | RCSP | R/W | P | These bits allow the user to read/configure the D-CAP3 ramp generator's resistor value selection. (Refer to Table 7-21.) |
| 3 | R | 0 | ||
| 2:0 | FS | R/W | 011b | These bits allow the user to read/configure the device’s PWM switching frequency. (Refer to Table 7-22) |
| RCSP[1] | RCSP[0] | Resistor Selection |
|---|---|---|
| 0 | 0 | Resistor ÷ 2 |
| 0 | 1 | Resistor ÷ 1 |
| 1 | 0 | Resistor × 2 |
| 1 | 1 | Resistor × 3 |
| FS[2] | FS[1] | FS[0] | Switching Frequency |
|---|---|---|---|
| 0 | 0 | 0 | 315 kHz |
| 0 | 0 | 1 | 425 kHz |
| 0 | 1 | 0 | 550 kHz |
| 0 | 1 | 1 | 650 KHz |
| 1 | 0 | 0 | 825 KHz |
| 1 | 0 | 1 | 900 KHz |
| 1 | 1 | 0 | 1.025 MHz |
| 1 | 1 | 1 | 1.125 MHz |