SLUUCQ1 March 2023 TPS546D24S
Table 4-1 lists the test point functions.
| Test Point | Type | Name | Description |
|---|---|---|---|
| TP1_P1 | T-H Loop | PVIN_P1 | PVIN pin voltage of U1_P1 device measurement point |
| TP1_P2 | T-H Loop | PVIN_P2 | PVIN pin voltage of U1_P2 device measurement point |
| TP2_P1 | T-H Loop | SW_P1 | Switching node of output rail phase 1 measurement point, reference to TP4_P1 |
| TP2_P2 | T-H Loop | SW_P2 | Switching node of output rail phase 2 measurement point, reference to TP4_P2 |
| TP3_P1 | T-H Loop | GND_P1 | GND pin voltage of U1_P1 device measurement point |
| TP3_P2 | T-H Loop | GND_P2 | GND pin voltage of U1_P2 device measurement point |
| TP4_P1 | T-H Loop | GND_P1 | GND reference for switch node measurement of U1_P1 |
| TP4_P2 | T-H Loop | GND_P2 | GND reference for switch node measurement of U1_P2 |
| TP5_P1 | T-H Loop | PG_S_P1 | PGOOD signal of phase 1 |
| TP5_P2 | T-H Loop | PG_S_P2 | PGOOD signal of phase 2 |
| TP6 | T-H Loop | AUX_5V | External 5-V measurement point for VDD5 |
| TP7 | T-H Loop | DATA | DATA signal on J2 header |
| TP8 | T-H Loop | SMBALRT | SMBALERT signal on J2 header |
| TP9 | T-H Loop | CNTL | CNTL signal on J2 header |
| TP10 | T-H Loop | CLK | CLK signal on J2 header |
| TP11 | T-H Loop | GND | GND reference |
| TP12 | T-H Loop | PVIN | VIN+ measurement point |
| TP13 | T-H Loop | VOUT_P1 | U1_P1 output voltage measurement point for efficiency, reference to TP16 |
| TP14 | T-H Loop | Remote SNS+ | OUTPUT remote sense + voltage point |
| TP15 | T-H Loop | GND | VIN- measurement point |
| TP16 | T-H Loop | GND_P1 | U1_P1 output voltage referencing GND for efficiency measurement |
| TP17 | T-H Loop | CH_A | OUTPUT for small signal loop gain measurements (B/A setup) |
| TP18 | T-H Loop | CH_B | INPUT for small signal loop gain measurements (B/A setup) |
| TP19 | T-H Loop | Ext_AVIN | AVIN measurement point |
| TP20 | T-H Loop | GND | GND reference |
| TP21 | T-H Loop | VSHARE | VSHARE measurement point. Sensitive signal. |
| TP22 | T-H Loop | VOUT | VOUT + measurement point |
| TP23 | T-H Loop | GND | GND reference |
| TP24 | T-H Loop | GND | GND reference |
| TP25 | T-H Loop | GND | VOUT - measurement point |
| TP26 | T-H Loop | VOUT_P2 | U1_P2 output voltage measurement point for efficiency, reference to TP30 |
| TP27 | T-H Loop | SYNC | Synchronization connection between U1_P1 and U1_P2. External SYNC input. |
| TP28 | T-H Loop | Remote SNS- | OUTPUT remote sense - voltage point |
| TP29 | T-H Loop | BC_DAT | Data for back-channel communications between stacked devices |
| TP30 | T-H Loop | GND_P2 | U1_P2 output voltage referencing GND for efficiency measurement |
| TP31 | T-H Loop | BC_CLK | Clock for back-channel communications between stacked devices |
| TP32 | T-H Loop | GND | GND reference |
| TP33 | T-H Loop | VOSNS_P2 | VOSNS measurement point for U1_P2 |
| TP34_P1, TP34_P2 | T-H Loop | MSEL2_P1, MSEL2_P2 | MSEL2 measurement point for U1_P1 and U1_P2 |
| TP35_P1, TP35_P2 | T-H Loop | VSEL_P1, VSEL_P2 | VSEL measurement point for U1_P1 and U1_P2 |
Table 4-2 lists the EVM jumpers.
| Jumper | Type | Name | Description |
|---|---|---|---|
| JP1_P1, JP1_P2 | Header, 100 mil, 2 × 1 | EXT_5.1V_P1, EXT_5.1V_P2 | Short to connect VDD5 of U1_P1 or U1_P2 to the 5.1 V from U2 |
| JP2_P1, JP2_P2 | Header, 100 mil, 3 × 2 | CNTL_SEL1, CNTL_SEL2 | U1_P1 and U1_P2 EN/UVLO pin selections |
| JP3 | Header, 100 mil, 2 × 1 | EN to GND | Short to disable the auxiliary 5 V |
| JP4 | Header, 100 mil, 2 × 1 | AVIN-PVIN | Short to connect to connect AVIN input to PVIN |
| JP5 | Header, 100 mil, 2 × 1 | AVIN-LDO | Short to connect to connect AVIN input to U2 input |
| JP6 | Header, 100 mil, 2 × 1 | PMBus3.3V-AVIN | Short to connect USB-to-GPIO 3.3V to AVIN |
| JP7_P1, JP7_P2 | Header, 100 mil, 3 × 1 | AVIN-U1_P1, AVIN-U1_P2 | U1_P1 and U1_P2 AVIN input source selections |
| JP8 | Header, 100 mil, 2 × 1 | Micro_USB-PVIN | Short to connect PVIN to Micro USB connector |
Table 4-3 lists the options for the EN/UVLO pin selections on JP2_P1 and JP2_P2.
| Shunt Position | Selection |
|---|---|
| pin 1 to 2 shorted | PMBus adaptor control signal |
| pin 3 to 4 shorted | Resistor divider to PVIN |
| pin 5 to 6 shorted | EN/UVLO short to ground |
Table 4-4 lists the options for the EN/UVLO pin selections on JP2_P1 and JP2_P2.
| Shunt Position | Selection |
|---|---|
| pin 1 to 2 shorted | AVIN pin connected to AVIN input through 10-Ω resistor. Use this selection when testing with a split rail input. |
| pin 2 to 3 shorted | AVIN pin connected to PVIN through 10-Ω resistor |
Table 4-5 lists the EVM connector functions.
| Connector | Type | Name | Description |
|---|---|---|---|
| J1 | Header, 100 mil, 6 × 2 | N/A | Do not use |
| J2 | Header, 100 mil, 5 × 2 | PMBus connector | PMBus socket for TI FUSION adaptor |
| J3 | Header, 100 mil, 6 × 2 | N/A | Do not use |
| J4 | Micro USB | Micro USB | Micro USB connector to power EVM from a 5 V USB source |
| T1 | Terminal block, 2 × 1 | PVIN | VIN+ connector |
| T2 | Terminal block, 2 × 1 | GND | VIN– connector |
| T3 | Terminal 90A Lug | VOUT | VOUT+ connector |
| T4 | Terminal block, 2 × 1 | Ext_AVIN | External AVIN connector |
| T5 | Terminal 90A Lug | GND | VOUT– connector |