IR3502BMPBF International Rectifier, IR3502BMPBF Datasheet - Page 14

• Manufacturer Part Number: IR3502BMPBF
• Description: The IR3502B control IC combined with an XPHASE3 Phase IC provides a full featured and flexible way to implement a complete VR11.0 and VR11.1 power solution.
• Manufacturer: International Rectifier

Specifications of IR3502BMPBF

• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 250kHz to 1.5MHz
• Pbf: PbF Option Available

ROSC/OVP
VCCLDRV
PHSOUT
ENABLE
CLKOUT
SS/DEL
PHSIN
VCCL
VDAC
LGND
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
VO
OV@START
CLKOUT
PHSOUT
VCCLDRV-0.2V
Page 14 of 38
VCCL UVLO
VCCL REGULATOR
AMPLIFIER
850mV
INTEL
800mV
0.6V
6.8V
+
-
OV@OPERATION
PHSIN
6.45V
5.45V
VID7
VID6
VID5
VID4
VID3
VID1
VID0
VID0
ENABLE
COMPARATOR
VID2
VID INPUT
COMPARATORS
(1/8 SHOWN)
0.6V
-
+
VCCLDRV
+
-
FAULT LATCH1
VCCL OUTPUT
COMPARATOR
80mV
120mV
+
-
4.0V
IROSC
250nS
BLANKING
ROSC BUFFER
AMPLIFIER
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
DIGITAL
TO ANALOG
CONVERTER
INTERNAL
OPEN DAISY
FAULT
CHAIN
Last VID
+
-
DELAY
COMPARATOR
VDAC
Hold
VBOOT
VCCL UVLO
+
-
DISCHARGE
COMPARATOR
0.2V
DYNAMIC
VID
VID
FAULT
VBOOT
(1.1V)
-
+
CURRENT
SOURCE
GENERATOR
IROSC
DYNAMIC VID DETECT
COMPARATOR
VIDSEL
POWER OK
LATCH
VIDSEL
1.3uS
BLANKING
VBOOT
LATCH
SS RESET
SET
DOMINANT
Q
S
R
RESET
DOMINANT
S
R
S
R
Q
Q
+
-
OV FAULT
ISOURCE
ISINK
VDAC BUFFER
AMPLIFIER
VCCL
EAOUT
+
-
Figure 7 Block Diagram
1.08V
50mV
FAULT LATCH2
FAULT LATCH1
VID SAMPLE
DELAY
COMPARATOR
VID FAULT
LATCH
VDAC
-
+
8-Pulse
Delay
+
-
SET
DOMINANT
R
S
3V
1.6V
Q
SS RESET
OC
130mV
3mV
OC LIMIT
AMPLIFIER
IDCHG
OPEN VOLTAGE LOOP
4.5uA
OPEN SENSE LINE
OPEN DAISY CHAIN
200mV
OC after VRRDY
OC LIMIT
COMPARATOR
OPEN SENSE
LINE DETECT
COMPARATORS
OC DELAY
COUNTER
VDAC
60mV
OC before VRRDY
-
+
+
-
OVER
VOLTAGE
COMPARATOR
1.17V
DIS
VID FAULT LATCH
DAC_BUF
VID FAULT
VCCL UVLO
-
+
REMOTE SENSE
AMPLIFIER
VO
+
-
DISABLE
OPEN SENSE LINE
IROSC
PHSOUT
+
-
DETECTION
PULSE
VO
RESET
VDRP
315mV
275mV
VCCL UVLO
SS RESET
25k
SS CLEARED
FAULT LATCH1
UV CLEARED
FAULT LATCH2
25k
DAC_BUF
VOSEN-
+
-
+
-
DETECTION
PULSE
1.4V
SET
DOMINANT
SET
DOMINANT
+
-
S
R
S
R
200K
200K
SOFT
START
CLAMP
IVOSEN+
25k
25k
Q
Q
1.21V
VDRP
UV
VCCL
VIDSEL
FAULT LATCH1
FAULT LATCH2
POWER-UP OV
COMPARATOR
IVOSEN-
OV@START
OV@OPERATION
1.5V
1.6V
OV FAULT
IROSC
-
+
OPEN SENSE
LINE DETECT
COMPARATORS
200K
VRHOT COMPARATOR
OV@OPERATION
IR3502B
100K
+
-
-
+
UV
200K
VCCL
IVOSEN-
VDAC
VCCL UVLO
+
-
CURRENT
REPORT AMP
+
200K
-
+
-
+
DISABLE
ISETPT
6.1V
0.4V
ERROR
AMPLIFIER
-
+
+
-
V3.2
VOSEN-
VDRP
THERMAL COMP
SET
DOMINANT
IO
S
R
400K
VDAC
BUFFER AMP
Q
1.03
OV@START
DAC_BUF
VCCLDRV
0
+
-
OV FAULT
LATCH
OV FAULT
VCCL
PGOOD
HOTSET
VRHOT
VOSEN+
VOSEN-
IIN
IMON
EAOUT
FB
VSETPT
DAC_BUFF
VN
VDRP