ir3500a International Rectifier Corp., ir3500a Datasheet - Page 7

• Manufacturer Part Number: ir3500a
• Description: Xphase3 Vr11.0 & Amd Pvid Control Ic
• Manufacturer: International Rectifier Corp.

SYSTEM SET POINT TEST
IVDAC
Page 7 of 47
IVDAC
IR3500
FAST
VDAC
IR3500
FAST
VDAC
IROSC
IROSC
Figure 3 - System Set Point Test Circuit for AMD VIDs (VDAC shifted +50 mV)
+
-
+
-
CURRENT
SOURCE
GENERATOR
VDAC
BUFFER
AMPLIFIER
ISOURCE
ISINK
CURRENT
SOURCE
GENERATOR
VDAC
BUFFER
AMPLIFIER
Figure 2 - System Set Point Test Circuit for VR11 VID
ISOURCE
ISINK
IVSETPT
IVSETPT
ROSC BUFFER
AMPLIFIER
ROSC BUFFER
AMPLIFIER
REMOTE SENSE
AMPLIFIER
+
-
REMOTE SENSE
AMPLIFIER
IROSC
+
-
IROSC
+
-
0.6V
ERROR
AMPLIFIER
+
-
IROSC
0.6V
+
-
ERROR
AMPLIFIER
IROSC
+
-
IOCSET
IOCSET
EAOUT
FB
VSETPT
VDAC
LGND
ROSC
VO
VOSEN+
VOSEN-
OCSET
EAOUT
FB
VSETPT
VDAC
OCSET
LGND
ROSC
VO
VOSEN+
VOSEN-
ROCSET
ROSC
RVDAC
CVDAC
ROCSET
RVDAC
ROSC
1k
RVSETPT
CVDAC
1k
July 3, 2008
IR3500A
SYSTEM
SET POINT
VOLTAGE
EAOUT
VOSNS-
SYSTEM
SET POINT
VOLTAGE
EAOUT
VOSNS-