UCD9090
SLVSA30A –APRIL 2011–REVISED AUGUST 2011
www.ti.com
APPLICATION INFORMATION
12V
12V OUT
TEMP12V
TEMP IC
3.3V
Supply
I12V
INA196
12V OUT
VIN
5V OUT
VOUT
GPIO1
/EN
VMON1
VMON2
VMON3
VMON4
VMON5
VMON6
VMON7
VMON8
VMON9
VMON10
DC-DC 1
VFB
5V OUT
3.3V OUT
2.5V OUT
VIN
3.3V OUT
VOUT
GPIO2
GPIO3
GPIO4
/EN
DC-DC 2
VFB
1.8V OUT
0.8V OUT
I0.8V
VIN
TEMP0.8V
I12V
2.5V OUT
VOUT
/EN
DC-DC 3
GPIO5
TEMP12V
VIN
VFB
1.8V OUT
/EN VOUT
LDO1
TEMP0.8V
UCD9090
TEMP IC
WDI from main
processor
GPI1
0.8V OUT
VIN
VOUT
GPIO6
/EN
DC-DC 4
GPIO18
GPIO12
GPIO13
GPIO14
GPIO17
WDO
VFB
POWER_GOOD
I0.8V
INA196
Vmarg
2MHz
WARN_OC_0.8V_
OR_12V
FPWM5
Closed Loop
Margining
SYSTEM RESET
OTHER
SEQUENCER DONE
(CASCADE INPUT)
I2C/
PMBUS
JTAG
Figure 30. Typical Application Schematic
NOTE
Figure 30 is a simplified application schematic. Voltage dividers such as the ones placed
on VMON1 input have been omitted for simplifying the schematic. All VMONx pins which
are configured to measure a voltage that exceeds the 2.5V ADC reference are required to
have a voltage divider.
40
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