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Terminals
Test Points
TP25
TP26
TP27
TP28
TP29
TP30
TP31
TP32
TP33
TP34
TP35
TP36
TP37
TP38
TP39
TP40
TP41
7
Terminals
Terminal
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
12
Using the UCD3138PSFBEVM-027
Table 2. UCD3138PSFBEVM-027 List of Test Points (continued)
Name
AGND
Analog ground
QT1_Gate
QT1 gate
QB1_Gate
QB1 gate
QT2_Gate
QT2 gate
QB2_Gate
QB2 gate
Not used
Not used
3.3V
3.3 V
SW1
Switch node
PWRGND
Primary 12-V bias return
SW2
Switch Node
CASS
Primary commutation-assist junction
ISEC
IOUT sensing output (EADC1 Input)
Not used
Not used
Not used
S1
S1 status
Table 3. List of Terminals
Name
Input_P
Remote Sense
12VO
–12VO
Bias
UART1
UART0
VO_RIPPLE
Jumper
Jumper
Input_N
Copyright © 2013, Texas Instruments Incorporated
Description
Description
Input voltage positive terminal
Remote sense and I_SHARE
+12-V output
12-V output return
VAUX_S and 3.3V_EXT
Standard UART connection, RS232, 9-pin
UART0 and ACFAIL_IN (communication with PFC)
BNC VO_Ripple
Jumper (reserved to an input-fuse substitution)
Used when T5 not populated
Input voltage return terminal
www.ti.com
SLUUAK4 – August 2013
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