Texas Instruments TPS61170EVM-280 Evaluation Module TPS61170EVM-280 TPS61170EVM-280 데이터 시트
제품 코드
TPS61170EVM-280
Host
Computer
USB Cable
USB
Interface
Adapter
Green LED
Indicates
Power
10-Pin
Ribbon
Cable
EVM Board
Setup and Test Results
www.ti.com
2.3
Hardware Setup
After connecting the power supply between J1 and J2, turning on the power supply, and installing JP1, the
EVM will regulate the output voltage to the value per Table 1. Additional input capacitance may be
required in order to mitigate the inductive voltage droop that may occur during a load transient event.
EVM will regulate the output voltage to the value per Table 1. Additional input capacitance may be
required in order to mitigate the inductive voltage droop that may occur during a load transient event.
In order to change the output voltage via a PWM signal, remove the jumper on JP1 and the 10-pin ribbon
cable from J5, if installed, and perform the following steps in any sequence:
•
cable from J5, if installed, and perform the following steps in any sequence:
•
Connect the power supply between J1 and J2 and turn on the power supply.
•
Connect the appropriately configured function generator to the CTRL side of JP1.
•
Adjust the duty cycle of the 5kHz-100kHz PWM signal from the function generator to produce the
desired feedback voltage. The PWM signal's duty cycle is directly proportional to the regulated output
voltage, i.e., V
desired feedback voltage. The PWM signal's duty cycle is directly proportional to the regulated output
voltage, i.e., V
FB
= D
CTRL
* 1.229V.
In order to change the output voltage by sending the digital control signal via a PC running the TPS6116x
Controller software and USB-TO-GPIO interface box, remove the jumper or the function generator on JP1,
and perform the following steps in any sequence:
•
Controller software and USB-TO-GPIO interface box, remove the jumper or the function generator on JP1,
and perform the following steps in any sequence:
•
Connect one end of the USB-TO-GPIO box to the PC using the USB cable and the other end to J5 of
the TPS61161EVM using the supplied 10-pin ribbon cable per
the TPS61161EVM using the supplied 10-pin ribbon cable per
. The connectors on the ribbon
cable are keyed to prevent incorrect installation,
•
Connect the power supply between J1 and J2, and turn on the power supply.
•
Run the software as explained in the next section.
Figure 1. USB Interface Adapter Quick Connection Diagram
2.4
Software Installation and Operation
If installing from a CD, insert the CD and run Setup.exe; follow all the prompts to install the software.
If installing from the TI Web site, go to the URL,
.
NOTE:
This installation page is best viewed with Microsoft™ Internet Explorer browser (It may not
work correctly with other browsers).
4
TPS61170EVM-280
SLVU222C – December 2007 – Revised September 2009
Copyright © 2007–2009, Texas Instruments Incorporated