Texas Instruments TPSM8D6C24EVM-2V0, User Manual

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Table 4-3. JP3 and JP4 Selections
Shunt Position Selection
CNTL_INPUT PMBus adapter control signal
UVLO Resistor divider to PVIN
DISABLE EN/UVLO short to ground
Table 4-4 lists the options for the AVIN pin selections on JP1 and JP2.
Table 4-4. JP1 and J2 Selections
Shunt Position Selection
AVIN AVIN pin connected to AVIN input through 10-Ω resistor. Use this selection when testing with a split rail input.
PVIN AVIN pin connected to PVIN through 10-Ω resistor
Table 4-5 lists the EVM connector functions.
Table 4-5. Connector Functions
Connector Name Description
J1 Micro-USB Power Micro USB connector to power EVM from a 5-V USB source
J2 PMBus PMBus socket for TI FUSION adapter
T1 PVIN VIN+ connector
T2, T3 PGND VIN– connector
T4 AVIN External AVIN connector
T5 VOUT_A VOUT+ connector
T6, T8 PGND VOUT– connector
4.4 Evaluating Split Rail Input
The default configuration of the EVM is for single rail input. Split rail input enables operation with 3.3-V PVIN. For
split rail operation, configure the jumpers on the EVM as follows:
1. Move the jumper JP1 and JP2 to AVIN position to disconnect the AVIN pin from the PVIN pins.
2. Apply the AVIN input to T4. 4-V or greater AVIN is required to bring the VDD5 voltage high enough to enable
conversion.
3. If operation with 3.3-V PVIN is needed and the CNTL jumpers (JP3 and JP4) are in UVLO position,
the resistor divider at the EN/UVLO will need to be changed. Alternately, move the CNTL jumpers to
CNTL_INPUT position and use the control signal to enable conversion or use the ON_OFF_CONFIG and
OPERATION commands to enable conversion.
Test Setup www.ti.com
8 TPSM8D6C24EVM-2V0 User's Guide SLUUCK6 – DECEMBER 2021
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