SLUUCA9A September 2020 – April 2021 TPS546B24A
Table 4-1 lists the test point functions.
| Test Point | Type | Name | Description |
|---|---|---|---|
| TP1 | T-H Loop | EXT_AVIN | AVIN measurement point |
| TP2 | T-H Loop | GND | GND reference |
| TP3 | T-H Loop | CNTL | CNTL signal on J2 header |
| TP4 | T-H Loop | DATA | DATA signal on J2 header |
| TP5 | T-H Loop | CLK | CLK signal on J2 header |
| TP6 | T-H Loop | SMBALRT | SMBALERT signal on J2 header |
| TP7 | T-H Loop | MSEL2 | MSEL2 measurement point for U1 |
| TP8 | T-H Loop | VSEL | VSEL measurement point for U1 |
| TP9 | T-H Loop | PG | PGOOD signal of U1 |
| TP10 | T-H Loop | VSHARE | VSHARE measurement point. Sensitive signal |
| TP11 | T-H Loop | SYNC | External SYNC input |
| TP12 | T-H Loop | PVIN | VIN+ measurement point |
| TP13 | T-H Loop | VDD5 | VDD5 measurement point or external VDD5 input |
| TP14 | T-H Loop | SW | Switching node, reference to TP15 |
| TP15 | T-H Loop | GND | GND reference for switch node measurement |
| TP16 | T-H Loop | CH_A | INPUT for small signal loop gain measurements (B/A setup) |
| TP17 | T-H Loop | CH_B | OUTPUT for small signal loop gain measurements (B/A setup) |
| TP18 | T-H Loop | GND | GND reference |
| TP19 | T-H Loop | GND | VIN- measurement point |
| TP20 | T-H Loop | GND | GND reference for U1 PVIN for efficiency measurement |
| TP21 | T-H Loop | GND | GND reference for VOUT for efficiency measurement |
| TP22 | T-H Loop | Remote SNS+ | OUTPUT remote sense + voltage point |
| TP23 | T-H Loop | PVIN_EFF | PVIN pin voltage of U1 measurement point for efficiency, reference to TP20 |
| TP24 | T-H Loop | VOUT_EFF | VOUT measurement point for efficiency, reference to TP21 |
| TP25 | T-H Loop | Remote SNS- | OUTPUT remote sense - voltage point |
| TP26 | T-H Loop | GND | VOUT - measurement point |
| TP27 | T-H Loop | VOUT | VOUT + measurement point |
| TP28 | T-H Loop | VOUT_FILT | VOUT_FILT measurement point when using second stage filter |
Table 4-2 lists the EVM jumpers.
| Jumper | Type | Name | Description |
|---|---|---|---|
| JP1 | Header, 100 mil, 2 × 1 | Micro_USB-PVIN | Short to connect PVIN to Micro USB connector |
| JP2 | Header, 100 mil, 2 × 1 | PMBus3.3V-AVIN | Short to connect USB-to-GPIO 3.3V to AVIN |
| JP3 | Header, 100 mil, 3 × 1 | AVIN Select | AVIN input source selections |
| JP4 | Header, 100 mil, 3 × 2 | EN Select | EN/UVLO pin selections |
Table 4-3 lists the options for the EN/UVLO pin selection.
| Shunt Position | Selection |
|---|---|
| pin 1 to 2 shorted | PMBus adapter 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 AVIN selection.
| 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 | Micro USB | Micro USB | Micro USB connector to power EVM from a 5 V USB source |
| J2 | Header, 100 mil, 5 × 2 | PMBus connector | PMBus socket for TI FUSION adapter |
|
T1 | Terminal block, 2 × 1 | Ext_AVIN | External AVIN connector |
| T2 | Terminal block, 2 × 1 | PVIN | VIN+ connector |
| T3 | Terminal block, 2 × 1 | GND | VIN– connector |
| T4 | Terminal block, 2 × 1 | GND | VOUT_FILT- connector |
| T5 | Terminal block, 2 × 1 | VOUT_FILT | VOUT_FILT+ connector |
| T6 | Terminal block, 2 × 1 | VOUT | VOUT+ connector |
|
T7 | Terminal block, 2 × 1 | GND | VOUT– connector |