SLUUBN2A March 2017 – August 2021 TPS549B22
Table 8-1 lists the test points and their descriptions.
| Item | Type | Name | Description |
|---|---|---|---|
| TP5 | T-H loop | SW | Power supply Switch node |
| TP7 | T-H loop | CH-A | Measure loop stability |
| TP6 | T-H loop | CH-B | Measure loop stability |
| TP2 | T-H loop | LocS+ | Sense VOUT + locally across C25. Use for efficiency and ripple measurements |
| TP10 | T-H loop | LocS- | Sense VOUT– locally across C25. Use for efficiency and ripple measurements |
| TP3 | T-H loop | RemS+ | Remote sense + |
| TP11 | T-H loop | RemS- | Remote sense – |
| TP4 | T-H loop | PVIN | Sense VIN + across C10 |
| TP13 | T-H loop | PGND | Sense VIN – across C10 |
| TP1 | T-H loop | VDD | Supplies the internal circuitry |
| TP17 | T-H loop | ADDR | Monitor the ADDR external resistor divider ratio during initial power up. |
| TP15 | T-H loop | VSEL | Monitor the VSEL external resistor divider ratio during initial power up. |
| TP9 | T-H loop | BP | LDO output |
| TP8 | T-H loop | PG | Power good |
| TP16 | T-H loop | MODE | Monitor the MODE external resistor divider ratio during initial power up. |
| TP12 | T-H loop | ILIM | Program over-current limit. |
| TP14 | T-H loop | RESV_TRK | Do not connect. |
| TP19 | T-H loop | PGND | Common GND |
| TP18 | T-H loop | PGND | Common GND |
| TP20 | T-H loop | PMB_CLK | Clock input for the PMBus interface. |
| TP21 | T-H loop | PMB_DATA | Data I/O for the PMBus interface. |
| TP22 | T-H loop | SMB_ALRT# | Alert output for the PMBus interface. |
| JP4 | 2-pin jumper | CNTL | Shunts control pin to GND |