ZHCS688I November 2011 – March 2018 TPS65217
PRODUCTION DATA.
DEFSLEW is shown in Figure 47 and described in Table 19.
Return to Summary Table.
Slew-rate control applies to all three DC/DC converters.
This register is password protected.
DATA BIT | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|
FIELD NAME | GO | GODSBL | PFM_EN1 | PFM_EN2 | PFM_EN3 | SLEW[2:0] | ||
READ/WRITE | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
RESET VALUE | 0b | 0b | 0b | 0b | 0b | 1b | 1b | 0b |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7 | GO | R/W | 0b |
Go bit
0b = No change 1b = Initiates the transition from the present state to the output voltage setting currently stored in the DEFDCDCx register |
6 | GODSBL | R/W | 0b |
Go Disable bit 0b = Enabled 1b = Disabled; DCDCx output voltage changes whenever setpoint is updated in DEFDCDCx register without having to write to the GO bit. SLEW[2:0] setting does apply. |
5 | PFM_EN1 | R/W | 0b |
PFM enable bit, DCDC1 0b = DC/DC converter operates in the PWM or PFM mode, depending on load. 1b = DC/DC converter is forced into the fixed-frequency PWM mode. |
4 | PFM_EN2 | R/W | 0b |
PFM enable bit, DCDC2 0b = DC/DC converter operates in the PWM or PFM mode, depending on load. 1b = DC/DC converter is forced into the fixed-frequency PWM mode. |
3 | PFM_EN3 | R/W | 0b |
PFM enable bit, DCDC3 0b = DC/DC converter operates in the PWM or PFM mode, depending on load. 1b = DC/DC converter is forced into the fixed-frequency PWM mode. |
2–0 | SLEW[2:0] | R/W | 0110b |
Output slew-rate setting
000b = 224 µs/step (0.11 mV/µs at 25 mV per step) 001b = 112 µs/step (0.22 mV/µs at 25 mV per step) 010b = 56 µs/step (0.45 mV/µs at 25 mV per step) 011b = 28 µs/step (0.90 mV/µs at 25 mV per step) 100b = 14 µs/step (1.80 mV/µs at 25 mV per step) 101b = 7 µs/step (3.60 mV/µs at 25 mV per step) 110b = 3.5 µs/step (7.2 mV/µs at 25 mV per step) 111b = Immediate; slew rate is only limited by the control loop response time. |