Host
Computer
USB Cable
USB
Interface
Adapter
Green LED
Indicates
Power
10-Pin
Ribbon
Cable
EVM Board
Bench Test Setup Conditions
8
SLVUAZ0 – November 2016
Copyright © 2016, Texas Instruments Incorporated
Evaluation Module for the TPS65235-1 LNB Voltage Regulator With I
2
C
Interface for DiSEqC2.x Application
4.2
Hardware Requirement
This EVM requires an external power supply capable of providing 4.5 V to 16 V at 4 A.
The EVM kit includes USB-TO-GPIO interface box which, when installed on a PC and connected to the
EVM, allows the user to communicate with the EVM through a GUI interface. (The EVM and
must be ordered separately.) The minimum PC requirements are:
•
Microsoft
®
Windows
®
2000, Windows XP or Windows 7 operating system
•
USB port
•
Minimum of 30 MB of free hard disk space (100 MB recommended)
•
Minimum of 256 MB of RAM
4.3
Hardware Setup
After connecting the power supply to J2, floating J7, connect J3, J4, and J5 to GND, J6 and P1 floating,
turning on the power supply, the EVM will regulate the output voltages to 13.4 V without tone
superimposed.
Perform the following steps to change the output voltage by sending the digital control signal through a PC
running the TPS65235-1 Controller software and USB-TO-GPIO interface box:
•
Connect one end of the USB-TO-GPIO box to the PC using the USB cable and the other end to P1 of
the TPS65235-1 using the supplied 10-pin ribbon cable per
. The connectors on the ribbon
cable are keyed to prevent incorrect installation.
•
Floating J3.
•
Connect the power supply on J2, and turn on the power supply.
•
Run the software as explained in
.
Figure 6. USB Interface Adapter Quick Connection Diagram
