Setup
2.1.13
J13 – VDD
This header is used to provide the V
DD
voltage (between 1.2 and 3.6 V) to the EVM if JP2 is not installed.
If JP2 is installed, the V
DD
voltage may be monitored at this header.
2.1.14
J14 – GND
This header is used to monitor the V
DD
voltage if JP2 is installed. If JP2 is not installed, this header is the
connection for the return connection of the applied V
DD
voltage.
2.1.15
J15 – INT Pin Output
This header provides the INT pin output on pin 1 with a convenient ground reference on pin 2.
2.1.16
J16 – V
IN
and GND Terminal Block
This terminal block is used instead of J1 or J3 when the input current exceeds 1 A. The leads to the input
supply should be twisted and kept as short as possible to minimize EMI transmission and reduce inductive
voltage droop during a load transient event. This voltage should be between 2.5 V and 5.5 V.
2.1.17
J17 – DCDC_A and GND Terminal Block
This terminal block is used, instead of J4 or J6, to connect to the load (processor) when the load current
exceeds 1 A. The leads to the load should be twisted and kept as short as possible to minimize EMI
transmission and reduce inductive voltage droop during a load transient event.
2.1.18
J18 – DCDC_B and GND Terminal Block
This terminal block is used, instead of J7 or J9, to connect to the load (processor) when the load current
exceeds 1 A. The leads to the load should be twisted and kept as short as possible to minimize EMI
transmission and reduce inductive voltage droop during a load transient event.
2.1.19
J19 – SYS I
2
C Connection from USB-TO-GPIO Adaptor
This connects the USB-TO-GPIO adaptor to the SYS I
2
C connection of the TPS650380. It provides the I
2
C
signals and a 3.3 V supply for powering V
DD
. This connector is keyed to prevent incorrect installation. Only
install a USB-TO-GPIO adaptor in either J19 or J25 at the same time.
2.1.20
J20 – SYS I
2
C Monitor Point and Alternate Connection
This header is provided to connect to or monitor the SYS I
2
C signals on the TPS650380EVM-054. If the
I
2
C signals are being sent via this header (and not via the USB-TO-GPIO adaptor), do not plug into the
J19 or J25 headers and provide a separate V
DD
supply between J13 and J14.
2.1.21
J21 – DVS I
2
C Monitor Point and Alternate Connection
This header is provided to connect to or monitor the DVS I
2
C signals on the TPS650380EVM-054. If the
I
2
C signals are being sent via this header (and not via the USB-TO-GPIO adaptor), do not plug into the
J19 or J25 headers and provide a separate V
DD
supply between J13 and J14.
2.1.22
J22 – DCDC_A Load Step Signal Input
This SMA connector accepts a signal input from a function generator that drives Q1 in order to evaluate
DCDC_A's transient response. This connector is not normally installed. TP3 can be used instead to apply
the signal.
2.1.23
J23 – DCDC_B Load Step Signal Input
This SMA connector accepts a signal input from a function generator that drives Q2 in order to evaluate
DCDC_B's transient response. This connector is not normally installed. TP4 can be used instead to apply
the signal.
5
SLVU720A – June 2012 – Revised November 2012
TPS650380EVM-054
Copyright © 2012, Texas Instruments Incorporated
