UCD90320
ZHCSFI3B –AUGUST 2016–REVISED MAY 2019
www.ti.com.cn
Typical Application (continued)
12-V OUT
12-V
OUT
Temp IC
12-V
12-V
Temp
INA196
Cur
3.3-V
Supply
VREF
(Optional)
12-V
OUT
Hot
Swap
V33A V33D
AMON
VOUT
AMON
AMON
AMON
AMON
AMON
EN
EN
VOUT 1.8 V
3.3 V
VOUT 0.8 V
3.3-V
VIN
VOUT
DC-DC1
VFB
Cur 12 V
Temp 12 V
Temp 0.8 V
OUT
EN
AMON
UCD90320
DMON
POL‘s PWRGD
VIN
VOUT
1.8 V
EN
VOUT
LDO1
EN
WDI from main
processor
GPIO
GPIO
LGPO
GPIO
GPIO
GPIO
WDO
0.8 V
Temp IC
POWER_GOOD
VIN
VOUT
DC-DC2
VFB
WARN_OV_ 0.8 V
or WARN_OV_12 V
VOUT
0.8 V
EN
EN
SYSTEM_RESET
Other sequencer
done (cascade input)
I2C/PMBus
MARGIN
3.3-V
JTAG
GPIO
GPIO
UCD90320 (Cascaded)
SYNC_CLK
SYNC-CLK
Figure 38. Simplified System Diagram
44
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