Staircase control profiles can be configured
by setting REF_PROFILE_CONFIG to 10b. Staircase profiles feature input control reference
changes in steps between REF_CLAMP1 and REF_CLAMP2, by configuring DUTY_x and REF_x.
- DUTY_OFF1 configures the duty command
below which the reference will be REF_OFF1.
- DUTY_OFF1 and DUTY_ON1 configure a hysteresis between reference
levels REF_CLAMP1 and REF_OFF1 as shown in Figure 7-19.
- DUTY_CLAMP1 configures the duty command
till which reference will be constant. REF_CLAMP1 configures this constant reference
between DUTY_OFF1 and DUTY_CLAMP1. DUTY_CLAMP1 can be placed anywhere between DUTY_ON1
and DUTY_A.
- DUTY_A configures the duty command for
reference REF_A. There is a step change in reference from REF_CLAMP1 to REF_A at
DUTY_CLAMP1. DUTY_A to DUTY_E has to be in the same order as shown in Figure 7-19.
- DUTY_B configures the duty command for
reference REF_B. There is a step change in reference from REF_A to REF_B at DUTY_A.
- DUTY_C configures the duty command for
reference REF_C. There is a step change in reference from REF_B to REF_C at DUTY_B.
- DUTY_D configures the duty command for
reference REF_D. There is a step change in reference from REF_C to REF_D at DUTY_C.
- DUTY_E configures the duty command for
reference REF_E. There is a step change in reference from REF_D to REF_E at DUTY_D.
- DUTY_CLAMP2 configures the duty command
above which the reference will be constant at REF_CLAMP2. REF_CLAMP2 configures this
constant reference between DUTY_CLAMP2 and DUTY_OFF2. There is a step change in
reference from REF_E to REF_CLAMP2 at DUTY_E. DUTY_CLAMP2 can be placed anywhere between
DUTY_E and DUTY_ON2.
- DUTY_OFF2 and DUTY_ON2 configure a
hysteresis between reference levels REF_CLAMP2 and REF_OFF2 as shown in Figure 7-19.
- DUTY_OFF2 configures the duty command
above which the reference will change from REF_CLAMP2 to REF_OFF2.