JAJSTA1 August 2024 TPSM8287A15M
PRODUCTION DATA
If the user changes the output voltage setpoint while the device is operating, the device ramps up or down to the new voltage setting in a controlled way.
The VRAMP[1:0] bits in the CONTROL1 register set the slew rate when the device ramps from one voltage to another during DVS (see Table 7-4). The ramp rate is independent of the setting of the VRANGE[1:0] bits.
VRAMP[1:0] | DVS Slew Rate |
---|---|
0b00 | 10mV/μs |
0b01 | 5mV/μs |
0b10 (default) | 1.25mV/μs |
0b11 | 0.5mV/μs |
Note that ramping the output to a higher voltage requires additional output current, so that during DVS the converter must generate a total output current given by:
where:
For correct operation, make sure that the total output current during DVS does not exceed the rated current of the device.