Texas Instruments TPS65055EVM-258 Evaluation Module TPS65055EVM-258 TPS65055EVM-258 Datenbogen
Produktcode
TPS65055EVM-258
1.1.2
Printed Circuit Board Assembly
1.1.3
USB to I2C Adapter
1.1.4
Software
2
Setup
2.1
Input / Output Connector Descriptions
2.1.1
J1 –VIN
2.1.2
J2 –GND
2.1.3
J3 – I2C
2.1.4
J4 – Discrete Outputs
Setup
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The TPS65055EVM-258 PCB contains the TPS65055 IC and its required external components. This
board contains several jumpers and connectors that allow the user to customize the board for specific
operating conditions.
board contains several jumpers and connectors that allow the user to customize the board for specific
operating conditions.
The HPA172 is the link that allows the PC and the EVM to communicate. The adapter connects to the PC
with the supplied USB cable on one side and to the EVM though the supplied ribbon cable on the other.
When the user writes a command to the EVM, the interface program, which is run from the PC, sends the
command to the PC USB port. The adapter receives the USB command and converts the signal to an I2C
protocol. It then sends the I2C signal to the TPS65055 board. When the user reads a status register from
the EVM, the PC sends a command to read a register on the EVM. When the EVM receives the
command, it reports the status of the register via the I2C interface. The adapter receives the information
on the I2C interface, converts it to a USB protocol, and sends it to the PC.
with the supplied USB cable on one side and to the EVM though the supplied ribbon cable on the other.
When the user writes a command to the EVM, the interface program, which is run from the PC, sends the
command to the PC USB port. The adapter receives the USB command and converts the signal to an I2C
protocol. It then sends the I2C signal to the TPS65055 board. When the user reads a status register from
the EVM, the PC sends a command to read a register on the EVM. When the EVM receives the
command, it reports the status of the register via the I2C interface. The adapter receives the information
on the I2C interface, converts it to a USB protocol, and sends it to the PC.
Texas Instruments has provided software to assist the user in evaluating this EVM. To install the software,
insert the enclosed CD into your computer. The software should start automatically. If it does not, simply
go to <Start>, <Run>, and type “D:\setup.exe”, and click <OK> (assuming that D: is your CD drive). Check
the TPS65055 product folder on the TI website for the latest revision of the software.
insert the enclosed CD into your computer. The software should start automatically. If it does not, simply
go to <Start>, <Run>, and type “D:\setup.exe”, and click <OK> (assuming that D: is your CD drive). Check
the TPS65055 product folder on the TI website for the latest revision of the software.
This chapter describes the jumpers and connectors on the EVM as well as how to properly connect, setup,
and use the TPS65055EVM-258.
and use the TPS65055EVM-258.
Input voltage from external power supply, recommended max 5.5V. Input current is dependent on load but
will typically be below 2A.
will typically be below 2A.
This is the return connection for VIN.
This is the I2C serial interface connector.
Three discrete outputs are available on this connector:
RST – Active low by default. The state can be changed using the REG_CTRL register of the
TPS65055 using the I2C interface. This Open-Drain output is pulled up externally on the EVM to VIN.
DPD – Active low by default. The state can be changed using the REG_CTRL register of the
TPS65055 using the I2C interface. This Open-Drain output is pulled up externally on the EVM to VIN.
DISCHG – The state of this output is dependent on the voltage level of the THRESHOLD input. This
Open-Drain output is pulled up externally on the EVM to VIN.
TPS65055 using the I2C interface. This Open-Drain output is pulled up externally on the EVM to VIN.
DPD – Active low by default. The state can be changed using the REG_CTRL register of the
TPS65055 using the I2C interface. This Open-Drain output is pulled up externally on the EVM to VIN.
DISCHG – The state of this output is dependent on the voltage level of the THRESHOLD input. This
Open-Drain output is pulled up externally on the EVM to VIN.
TPS65055EVM
2
SLVU284 – January 2009