SLUUCI9A January 2022 – December 2022 UCC28781
Terminals and TEST POINTS | NAME | DESCRIPTION | |
---|---|---|---|
J1-1 | Terminal Block J1 | LINE | Primary-side AC-input "Line" or Line-1. |
J1-2 | NEUT | Primary-side AC-input "Neutral" or Line-2. | |
J2-1 | Terminal Block J2 | Vbulk0 | Primary-side rectified and filtered positive voltage output "Vbulk0" (+) derived from AC source. |
J2-2 | GND_P0 | Primary-side rectified and filtered negative voltage output "GND_P0" (-) derived from AC source. | |
J3-1 | Terminal Block J3 | Vbulk | Primary-side positive voltage input "Vbulk" (+) derived from DC source. |
J3-2 | GND_P | Primary-side negative voltage input "GND_P" (-) derived from DC source. | |
J4-1 | Terminal Block J4 | VOUT | Secondary-side DC voltage output "VOUT" (+) positive connection. |
J4-2 | GND_S | Secondary-side DC voltage output "GND_S" (-) negative connection. | |
J5-1 | 3-Pin Header J5 | AC-Sense | Primary-side sense and discharge path from X-capacitor. |
J5-2 | XCD | Primary-side connection to XCD pins of UCC28781-Q1 controller. | |
J5-3 | GND_P | Primary-side ground reference, used to disable XCD function. | |
TP1 | Input test point near J1-1 | LINE | Primary-side AC input monitor point - Line (or Line 1). |
TP2 | Input test point near J1-2 | NEUT | Primary-side AC input monitor point - Neutral (or Line 2). |
TP3 | Output test point near J4-2 | GND_S | Secondary-side DC output monitor "GND_S" (-) ground reference. |
TP4 | Output test point near J4-1 | VOUT | Secondary-side DC output monitor "VOUT" (+) positive reference. |
TP5 | Output test point near J4-1 | VOUT_A | Secondary-side DC insertion point "VOUT_A" for small-signal loop-stability analysis. |