Texas Instruments TPS65291 EVM, Руководство пользователя

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Getting Started
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6 SLVUB61 – July 2017
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TPS65291 EVM User's Guide
J7 (B1_VOUT) and J14 (GND), or J8 (pin 1 = LDO_SW_VOUT, pin 1 = GND) — TheJ7 and J14 banana
jacks and the J8 screw terminal are for attaching a load to draw power from BUCK1.
2.2 Test Points
This section describes the test points located on the TPS65291EVM to measure the voltage of all pins of
the TPS65291 device.
Table 1 lists the test points.
(1)
Ground test points are labeled GND (except for TP15) and do not show TPxx on the silk-screen of the PCB.
(2)
Headers used as test points are tin or gold-plated tin but do not have colored plastic and are designated Jxx instead of TPxx.
Table 1. TPS65291EVM Test Point List
PCB Reference Designator Color Type Net Name
TP1 Red Input power B2_VIN
TP2 Red Input power B1_VIN
TP3 Yellow Output power B2_VOUT
TP4 Yellow Output power B1_VOUT
TP5 Orange Data output VIN_MON
TP7 Red Input power LDO_SW_IN
TP8 Orange Data input CLK
TP10 Yellow Output power LDO_SW_OUT
TP11 Orange Data input MOSI
TP12 Orange Data output MISO
TP14 Orange Data input CS
TP6, TP9, TP13, TP15-TP18
(1)
Black Ground PGND, AGND, thermal pad
TP19 Metal (Surface Mount) MSP430 power rail USB_3P3V
J17
(2)
3-Pin Header
Input power B1_VIN (pin 1)
Data output VIN_MON (pin 2)
Input power B2_VIN (pin 3)
J18
(2)
Header MSP430 power output EXT_3V3
CAUTION
J17 does not allow for the installation of a shunt to short two pins together. The
center pin, VIN_MON, is an output that indicates a valid input supply on the
B1_VIN or B2_VIN pin. The B1_VIN and B2_VIN pins have Kelvin connections
routed to the J17 header and should be used for accurately measuring voltage
with an oscilloscope.
2.3 Jumpers
This section describes the jumper headers located on the TPS65291EVM for connecting nets of the PCB
together to perform various functions.
Table 2 lists the jumpers.
Table 2. TPS65291EVM Jumper List
PCB Reference
Designator
Pin Net Name
Default Shunt Connection Description
J20
1 USB_3P3V
Pins 1 and 2 Shorted
Required to deliver 3.3-V rail to MSP430
and turn on LED D1
2 MSP_3P3V
3 B2_VOUT —
Optional way to provide 3.3-V rail to
MSP430 from TPS65291 BUCK2
J3
1 USB_5V
Not Installed
Optional way to provide 5-V VBUS rail to
TPS65291 from USB
2 B2_VIN