ISL6595 Datasheet, PDF (8/22 Pages) Intersil Corporation – Digital Multiphase Controller

ISL6595
Pin Description
PIN #
NAME
1 VID7
2 VID6
3 VID5
4 VID4
5 VID3
6 VID2
7 VID1
8 VID0
9 VID_SEL
10 LL1
11 OUTEN
12 VDD
13 FAULT1
14 FAULT2
15 VR_READY
16 GND
17 V12_SEN
18 VSENN
19 VSENP
20 TEMP_SEN
21 ISEN5-
22 ISEN5+
23 PWM5
24 VDD
25 ISEN6-
26 ISEN6+
27 PWM6/ATRLBB
28 ISEN4-
29 ISEN4+
30 PWM4
31 ISEN3-
32 ISEN3+
33 PWM3
I/O
TYPE
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I 1.2V CMOS
I VDD
O 3.3V CMOS
O 3.3V CMOS
O Open Drain
I Analog
I Analog
I Analog
I Analog
I
I Analog
O 3.3V CMOS
I VDD
I
I Analog
O 3.3V CMOS
I
I Analog
O 3.3V CMOS
I
I Analog
O 3.3V CMOS
DESCRIPTION
Bit 7 of processor voltage identification word (MSB of 8-bit VID word).
Bit 6 of processor voltage identification word.
Bit 5 of processor voltage identification word.
Bit 4 of processor voltage identification word.
Bit 3 of processor voltage identification word.
Bit 2 of processor voltage identification word.
Bit 1 of processor voltage identification word.
Bit 0 of processor voltage identification word (LSB of 8-bit VID word).
VID table selection input.
“1” Æ VR11 VID table selected
“0” Æ VR10 VID table selected
Processor load line select input control signal (MSB). Selects regulator load line
resistance.
Processor output enable input signal used to command the regulator output.
“1” Æ Regulator output voltage enabled
“0” Æ Regulator output voltage disabled
3.3V power supply connection; decoupling cap should be placed close to pin.
Programmable fault indicator #1.
Programmable fault indicator #2.
Digital Controller output signal to indicate the regulator output voltage is within the
specified range.
“1” Æ µP VCC within 10% of target regulation voltage
“0” Æ µP VCC outside 10% of target regulation voltage
Pin used in test mode only, tie to Ground for normal operation.
12V voltage divider input. Used to guarantee valid input power supply before starting
up (undervoltage lockout).
Negative voltage sense input.
Positive voltage sense input.
External thermistor temperature sense. Connected to ground through a negative TC
thermistor, with series and shunt resistance added to achieve desired range. See
“External Temperature Sense” on page 13 for more information.
Phase channel #5 ADC current sense (-) input, tie to ground if the phase is unused.
Phase channel #5 ADC current sense (+) input.
Phase channel #5 PWM output.
3.3V power supply connection; decoupling cap should be placed close to pin.
Phase channel #6 ADC current sense (-) input, tie to ground if the phase is unused.
Phase channel #6 ADC current sense (+) input.
Phase channel #6 PWM output or optional external ATRL output.
Phase channel #4 ADC current sense (-) input, tie to ground if the phase is unused.
Phase channel #4 ADC current sense (+) input.
Phase channel #4 PWM output.
Phase channel #3 ADC current sense (-) input, tie to ground if the phase is unused.
Phase channel #3 ADC current sense (+) input.
Phase channel #3 PWM output.
8
FN9192.2
December 4, 2008