Texas Instruments TPS61170EVM-280 Evaluation Module TPS61170EVM-280 TPS61170EVM-280 Datenbogen
Produktcode
TPS61170EVM-280
www.ti.com
Setup and Test Results
2.1.5
J5-USB-TO-GPIO Connector
This connector is for the 10-pin ribbon cable that connects the EVM to the USB-TO-GPIO interface box. It
is only used when the software is used to perform dimming.
is only used when the software is used to perform dimming.
2.1.6
JP1-ON/CTRL
Installing this jumper ties the CTRL pin to V
IN
, thereby turning on the device. Removing the jumper allows
the internal pulldown resistor to pull CTRL to ground, thereby disabling the device.
2.2
Hardware Requirements
This EVM requires an external power supply capable of providing 9 V to 18 V at 1.5 A.
To change the default feedback (FB) value from 1.229 V, thereby dynamically changing the regulated
output voltage, the user can apply either a pulse width modulation (PWM) or digital control signal to the
CTRL pin. Both signals change the feedback voltage at the IC's FB pin. A function generator capable of
driving the CTRL pin with 1.2-V to 18-V amplitude and a 5-kHz to 100-kHz PWM signal is required for
PWM-controlled modulation of the FB voltage. The user also can change the FB voltage using a digital
control signal. The EVM kit includes a personal computer (PC) software compact disk (CD) and
USB-TO-GPIO interface box which, when installed on a PC and connected to the EVM, allows the user to
communicate with the EVM via a GUI interface. The minimum PC requirements are:
output voltage, the user can apply either a pulse width modulation (PWM) or digital control signal to the
CTRL pin. Both signals change the feedback voltage at the IC's FB pin. A function generator capable of
driving the CTRL pin with 1.2-V to 18-V amplitude and a 5-kHz to 100-kHz PWM signal is required for
PWM-controlled modulation of the FB voltage. The user also can change the FB voltage using a digital
control signal. The EVM kit includes a personal computer (PC) software compact disk (CD) and
USB-TO-GPIO interface box which, when installed on a PC and connected to the EVM, allows the user to
communicate with the EVM via a GUI interface. The minimum PC requirements are:
•
Windows™ 2000 or Windows™ XP operating system
•
USB port
•
Minimum of 30 MB of free hard disk space (100 MB recommended)
•
Minimum of 256 MB of RAM
3
SLVU222C – December 2007 – Revised September 2009
TPS61170EVM-280
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