Datasheet

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5.4 List of Test Points
Table 3. Test Point Functions
TEST POINTS NAME DESCRIPTION
TMUX0 TMUX0 Output low bit to drive multiplexor for temperature and V
IN
/I
IN
TMUX1 TMUX1 Output high bit to drive multiplexor for temperature
VIN/IIN Vin/Iin Input supply sense (after multiplexor) – alternates between V
IN
/I
IN
VIN Vin Input voltage referenced to PGND
+Vout1 +V
OUT
Output voltage for rail #1 referenced to PGND
+Vout2 +V
OUT2
Output voltage for rail #2 referenced to PGND
PGND Power Ground Power ground reference
VINsense Vinsense V
IN
sense (prior to multiplexor)
IINsense Iinsense I
IN
sense (prior to multiplexor)
PWM_1 DPWM-1A Digital pulse width modulator output 1A
PWM_2 DPWM-2A Digital pulse width modulator output 2A
SRE_1 SRE-1A Synchronous rectifier enable output 1A
SRE_2 SRE-2A Synchronous rectifier enable output 2A
FLT_1 FLT-1A External fault input 1A
FLT_2 FLT-2A External fault input 2A
CS_1 CS-1A Power stage 1A current sense input and input to analog comparator 1
CS_2 CS-2A Power stage 2A current sense input and input to analog comparator 2
TP1 AGND Analog ground reference
TP2 AGND Analog ground reference
TP3 nRESET Reset pin – active low
TP4 V33FB Base drive control for 3.3-V linear regulator transistor (no connect if using an
external 3.3-V LDO regulator)
TP5 SEQ-1 Sequencing input/output (GPIO)
TP6 CS-1B Power stage 1B current sense input
TP7 nTRST JTAG test reset (pull-down to ground using 10-kΩ resistor)
TP8 DPWM-1B
TP9 TMS JTAG test mode select (pull-up to 3.3 V with 10-kΩ resister)
TP10 DPWM-3A
TP11 TDI/Sync_In JTAG test data in (multiplexed with Sync_In for synchronizing switching
frequency across multiple devices) – Pull-up to 3.3 V with 10-kΩ resistor
TP12 TDO/Sync_Out JTAG test data out (multiplexed with Sync_Out for synchronizing switching
frequency across multiple devices)
TP13 TCK JTAG test clock
TP14 SRE-1B Synchronous rectifier enable output 1B
TP15 SRE-3A Synchronous rectifier enable output 3A
TP16 FLT-1B External fault input 1B
TP17 FLT-3A External fault input 3A
TP18 CS-3A Power stage 3A current sense input and input to analog comparator 4
12
UCD9224EVM-464 Digitally Controlled Dual-Rail POL SLUU443–March 2011
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