ISL6592 Datasheet, PDF (20/21 Pages) Intersil Corporation – 6-Phase Digital Multiphase Controller

ISL6592
REGISTER
pwm_scramble
dual
fault1_mask[17:0]
fault2_mask[17:0]
shutdown_mask[15:0]
ch_mask[6:1]
TABLE 5. KEY REGISTERS (Continued)
DESCRIPTION
FORMAT
PWM scramble select. Controls mapping of PWM and NDRIVE
signals to pins OUT1 through OUT12. See Table 3 herein for
details.
PWM/NDRIVE select.
0 = Only PWM outputs active for use with single input drivers
1 = PWM & NDRIVE outputs active for use with dual input
drivers
Fault1 pin output masks. Inputs are enabled for reporting when
set to logic 1. If multiple inputs are selected, output is “OR” of
selected input signals.
17 = NVM fault
16 = Internal bus fault
15 = IUVP
14 = OUVP
13 = OOVP
12 = thermistor temp alert
11 = thermistor temp shutdown
10 = PTAT temp alert
9 = PTAT temp shutdown
8 = channel 1 high side short
7 = channel 2 high side short
6 = channel 3 high side short
5 = channel 4 high side short
4 = channel 5 high side short
3 = channel 6 high side short
2 = unused
1 = MHz controller fault
0 = Calibration fault
Shutdown control mask. Inputs are enabled for shutdown when
set to logic 1. If multiple inputs are selected, output is “OR” of
selected input signals.
15 = IUVP
14 = OUVP
13 = OOVP
12 = Individual phase current fault during active regulation
11 = thermistor temp shutdown
10 = Individual phase current fault during soft-start
9 = PTAT temp shutdown
8 = channel 1 high side short
7 = channel 2 high side short
6 = channel 3 high side short
5 = channel 4 high side short
4 = channel 5 high side short
3 = channel 6 high side short
2 = Total current fault during active regulation
1 = Total current fault during soft-start
0 = Calibration fault
Channel mask. Selects number of active phases. Phases must
be selected in sequential order.
000011 = 2-phase operation
000111 = 3-phase operation
001111 = 4-phase operation
011111 = 5-phase operation
111111 = 6-phase operation
RANGE
MIN
MAX
RESOLUTION
20
FN9163.1
August 5, 2005