Texas Instruments TPS25740AEVM-741, Руководство пользователя, Страница: 7 / 32

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Configuring the EVM
7 SLVUAP7A – April 2016 – Revised September 2016
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Copyright © 2016, Texas Instruments Incorporated
TPS25740EVM-741 and TPS25740AEVM-741 Evaluation Module User Guide
4 Configuring the EVM
4.1 Physical Access
Table 2 lists the TPS25740EVM-741 connector and LED functionality, Table 3 describes jumper
functionality, and Table 4 describes the test point availability.
Table 2. Connector and LED Functionality
Connector Label Description
J1 VIN Power bus input. Apply bus input voltage between J1 and J3.
J2 VBUS Output voltage that is applied to the VBUS of the USB type C cable. J2 along with J5 can be
used to apply an external load.
J3 GND Power bus input return connector. Apply bus input voltage between J1 and J3.
J4 J4 Barrel jack input from an AC to DC power supply. The center tip is positive.
J5 GND Switch bus output return connector. Apply the load between J2 and J5
J9 J9 Type C receptacle.
D6 DCDC_OUT This Green LED indicates when the output of the DC/DC converter is above approximately 3 V.
D7 D7 This Green LED indicates when an input voltage is present at J1/J3 or J4.
D8 D8 This Green LED indicates when VBUS is above approximately 3 V.
Table 3. Jumpers Functionality
Jumper Label Description
J7 PSEL/PCTRL Used to program the PSEL and PCTRL pins of the TPS25740 and
TPS25740A. This advertises the power level to the UFP. Install a single
shunt in the P1, P2, P3, or P4 position. Optionally, a second shunt can be
installed in the PCTRL position. The position locations are shown in
Figure 4
and also on the PCB silkscreen near J7.
spac P1 position: PSEL = 93 W
spac P2 position (default): PSEL = 65 W
spac P3 position: PSEL = 45 W
spac P4 position: PSEL = 36 W
spac PCTRL position (shunt installed): PMAX = PSEL/2
spac PCTRL position (no shunt installed-default): PMAX = PSEL
J8 HIPWR/ENMVb Used to program the HIPWR and EN12Vb/EN9Vb pins of the TPS25740 and
TPS25740A. This advertises maximum voltage and maximum current to the
UFP. Install a single shunt in the H1, H2, H3, or H4 position. Optionally, a
second shunt can be installed in the ENMVb position. The position locations
are shown in
Figure 5 and also on the PCB silkscreen near J8. V1 = 5 V, V2
= 9 V or 12 V, V3 = 15 V or 20 V
spac ENMVb position (shunt installed-default): V1 and V2
spac ENMVb position (no shunt installed): No V2
spac H1 position: V3 and IMAX = 5A (OCP = 6.3 A)
spac H2 position (default): V3 and IMAX = 3A (OCP = 4.2A)
spac H3 position: No V3 and IMAX = 5A (OCP = 6.3A)
spac H4 position: No V3 and IMAX = 3A (OCP = 4.2A)
Advertised current at Vx: Ix = min (PMAX/Vx, IMAX)
J6 LED Power Used to disconnect the LED power. This allows for more accurate
measurement of the board’s efficiency especially at light loads or when UFP
is disconnected.