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UCD9224 Datasheet(PDF) 8 Page - Texas Instruments

Part # UCD9224
Description  Digital PWM System Controller
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCD9224 Datasheet(HTML) 8 Page - Texas Instruments

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UCD9224
33
32
31
30
29
28
27
26
25
3
4
5
6
7
8
9
10
11
12
34
RESET
Vin/Iin
FLT-1B
SRE-1A
PMBus _Data
FLT-2A
PMBus _CLK
DPWM -1A
TMS
TRST
TDI / Sync _In
TDO / Sync _Out
TCK
PGood
FLT-3A
DGND 1
CS-2A
FLT-1A
V33 A
V33 D
1
2
CS-1B
CS-3A
35
36
AGND 1
BPCap
UCD9224
SLVSA35 – JANUARY 2010
www.ti.com
The UCD9224 is available in an 48-pin QFP package (RGZ).
Figure 3. Pin Assignment Diagram
TYPICAL APPLICATION SCHEMATIC
Figure 4 shows the UCD9224 power supply controller as part of a system that provides the regulation of one
eight-phase power supply. The loop for the power supply is created by the voltage output feeding into the
differential voltage error ADC (EADC) input, and completed by DPWM outputs feeding into the gate drivers for
each power stage (PTD modules in this example).
The ±VsA and ±VsB signal must be routed to the EAp/EAn input that matches the number of the lowest DPWM
configured as part of the rail. (See more detail in Flexible Rail/Power Stage Configuration.)
8
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Copyright © 2010, Texas Instruments Incorporated


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