Texas Instruments Evaluation Module for UCD9224 Digital PWM System Controller UCD9224EVM-464 UCD9224EVM-464 데이터 시트
제품 코드
UCD9224EVM-464
Test Setup
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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)
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-k
Ω
resistor)
TP8
DPWM-1B
TP9
TMS
JTAG test mode select (pull-up to 3.3 V with 10-k
Ω
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-k
frequency across multiple devices) – Pull-up to 3.3 V with 10-k
Ω
resistor
TP12
TDO/Sync_Out
JTAG test data out (multiplexed with Sync_Out for synchronizing switching
frequency across multiple devices)
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
© 2011, Texas Instruments Incorporated