ir3092 International Rectifier Corp., ir3092 Datasheet - Page 16

• Manufacturer Part Number: ir3092
• Description: 2 Phase Opteron, Athlon, Or Vr10.x Control Ic
• Manufacturer: International Rectifier Corp.

VID = 11111X Fault
VID codes of 111111 and 111110 will set the fault latch and disable the Error Amplifier.
Slew Rate Programming Capacitor C
VDAC sink current I
curve in the Typical Operating Characteristics. The slew rate of VDAC down-slope SR
external capacitor C
circuit and is determined by Equation (2). The slew rate of VDAC up-slope SR
rate SR
DOWN
Page 16 of 37
VID_SEL
VOSNS-
2.6V FLOAT VOLTAGE
VID5
VID0
VID1
VID2
VID3
VID4
and is given by Equation (3).
60K
18uA
110K
DAC
SINK
5V
as defined in Equation (1) and shown in Figure 6. Resistor R
and source current I
3.3V
1.2V
3.4V
-
+
+
-
SHOWN DEFAULT
TO VR10 WITH
VID_SEL GROUNDED
H=ATHLON
4.9V
DAC
VID INPUT
COMPARATORS
(1 OF 6 SHOWN)
0.6V
H=HAMMER
Figure 7– VID Control Block Diagram
C
and Resistor R
R
SR
DAC
DAC
SOURCE
UP
+
-
1.5V
0
SR
I
5 .
C
SOURCE
I
are determined by R
SINK
DAC
DOWN

3
2 .
DAC
C
DAC DEFAULTS
TO VR10 WITH
VID_SEL GROUNDED
DIGITAL TO ANALOG
CONVERTER
DAC
10
2
15
(1)
(2)
(3)
ROSC,
"FAST" VDAC
UP
and their value can be found using the
VID=11111X FAULT
BLANKING, 3.3us
is proportional to the down-slope slew
DAC
DOWN
DAC BUFFER
+
-
is used to compensate VDAC
IROSC
can be programmed by the
TO FAULT
"SLOW" VDAC
06/25/04
IR3092
VDAC