Xilinx ZC706 User Manual page 74

Figure 1-33 shows the power system for UCD90120A U48 controller.
X-Ref Target - Figure 1-33
UCD90120A Controller U48
Rail Enable
GPIO (out)
PWM Margin
FPWM (out)
Current Sense
ADC (in)
Voltage Sense
ADC (in)
Low Pwr Select
GPIO (out)
Rail Enable
GPIO (out)
PWM Margin
FPWM (out)
Current Sense
ADC (in)
Voltage Sense
ADC (in)
Rail Enable
GPIO (out)
PWM Margin
FPWM (out)
Current Sense
ADC (in)
Voltage Sense
ADC (in)
Rail Enable
GPIO (out)
PWM Margin
FPWM (out)
Current Sense
ADC (in)
Voltage Sense
ADC (in)
FMC_ADJ_SEL[1:0]
[ 1 0 ]
0 0
0 1
1 0
1 1
FMC_ADJ_SEL[1:0]
GPIO (out)
Rail Enable
GPIO (out)
PWM Margin
FPWM (out)
Current Sense
ADC (in)
Voltage Sense
ADC (in)
Notes:
1. Capacitors labeled Cf are bulk filter capacitors.
2. Voltage Sense is connected a point of load.
Figure 1-33: ZC706 TI UCD90120A Controller U48 Power System
ZC706 Evaluation Board User Guide
UG954 (v1.5) September 10, 2015
VCCINT 1.0V Nom.
12V Input
Filter
Vin
EN
V
fb
FB
VCCAUX 1.8V Nom.
Input
Filter
Vin
EN
V
fb
FB
VCC1V5_PL 1.5V Nom.
Input
Filter
Vin
EN
V
fb
FB
VADJ_FPGA 2.5V Nom.
Input
Filter
Vin
EN
V
fb
FB
U66
I0B
I1B
YB
I2B
VCC3V3 FPGA 3.3V Nom.
I3B
Input
S[1:0]
Filter
Vin
Dual 4-to-1 Mux
EN
V
fb
FB
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LMZ31520
Bulk Filter Caps
U42
Vout
Low Power || Radj
Low = 1.0V (Default)
High = 0.9V
LMZ31710
Bulk Filter Caps
U98
Vout
LMZ31506
Bulk Filter Caps
U85
Vout
LMZ31506
Bulk Filter Caps
U86
Vout
LMZ31710
Bulk Filter Caps
U15
Vout
Feature Descriptions
VCCINT 1.0V
Sense Connected
at Point of Load
VCC1V8 1.8V
VCCAUX 1.8V
Sense Connected
at Point of Load
VCC1V5_PL 1.5V
Sense Connected
at Point of Load
VADDJ 2.5V
VADJ_FPGA 2.5V
Sense Connected
at Point of Load
VCC3V3 3.3V
VCC3V3 FPGA 3.3V
Sense Connected
at Point of Load
UG954_c1_33_041615
74
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