Texas Instruments UCC25640EVM-020, User Manual, Page: 13 / 40

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Test Points
13 SLUUBX3B – June 2019 – Revised November 2019
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UCC25640EVM-020 Evaluation Module
6 Test Points
Table 2 lists the EVM test points.
Table 2. Test Points
Test Points Name Description
TP1 VIN Input voltage positive terminal
TP2 HO Primary-side high side MOSFET gate, Q1
TP3 SGND Secondary-side ground
TP4 SGND Secondary-side ground
TP5 HS
Primary-side switch node, or the intersection of Q1
and Q3
TP6 VCC Supply input
TP7 LO Primary-side low side MOSFET gate, Q3
TP8 PGND Primary-side ground
TP9 PGND Primary-side ground
TP10 VOUT Output voltage positive terminal
TP11 INJECT Small signal injection terminal
TP12 FB_Current Feedback current measurement
TP13 HV High-voltage start pin
TP14 AC_Rect Rectified AC input
TP15 RVCC Regulated 12-V supply
TP16 BLK Input voltage sensing
TP17 AC_L AC line
TP18 AC_N AC neutral
TP19 LL/SS Soft-start and light-load burst mode threshold
TP20 ISNS Resonant current sense
TP21 BW Bias winding voltage sense
TP22 VCR Resonant capacitor voltage sense
7 Terminals
Table 3 lists the EVM terminals.
Table 3. List of Terminals
Terminal Name Description
J1 VIN Input voltage positive terminal
J2 PGND Input voltage return terminal
J8 AC Input 3-pin, AC power input, 85–265 V
RMS
T2 VOUT Output voltage positive terminal
T3 SGND Output voltage ground terminal