ir3502b International Rectifier Corp., ir3502b Datasheet - Page 2

• Manufacturer Part Number: ir3502b
• Description: Xphase3 Control Ic
• Manufacturer: International Rectifier Corp.

APPLICATION CIRCUIT
Page 2 of 38
ENABLE
PGOOD
VRHOT
+12V
IOUT
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
IVDAC
CMON
IR3502B
FAST
VDAC
VOSEN-
IROSC
RMON1
+
-
RMON
RHOTSET1
CHOTSET
CURRENT
SOURCE
GENERATOR
VDAC
BUFFER
AMPLIFIER
1
2
3
4
5
6
7
8
ISOURCE
ISINK
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
Figure 1: IR3502B Application Circuit
RVCCLDRV
RHOTSET2
Figure 2 –System-set point measurements.
RHOTSET3
Q2
IVSETPT
IR3502B
ROSC BUFFER
AMPLIFIER
REMOTE SENSE
AMPLIFIER
+
-
IROSC
VDAC_BUFF
RFB1
VSETPT
+
-
SS/DEL
0.6V
ROSC
VDAC
VDRP
GND
RFB
ERROR
AMPLIFIER
VN
IROSC
+
-
CVCCL
24
23
22
21
20
19
18
17
CFB1
IOCSET
ROSC
RDRP
RVDAC
RVSETPT
RTCMP3
RTCMP1
REA
RTCMP2
CEA1
LGND
VO
VOSEN+
VOSEN-
EAOUT
FB
VSETPT
VDAC
OCSET
ROSC
CSS/DEL
CEA
RTHERM
RVDAC
ROCSET
ROSC
CVDAC
CVDAC
1k
SYSTEM
SET POINT
VOLTAGE
EAOUT
VOSNS-
IR3502B
V3.2
12V
VCCL
IIN
PHSIN
PHSOUT
CLKOUT
VDAC
EAOUT
VOSEN+
VOSEN-