Texas Instruments TPS65137A-366 Evaluation Board TPS65137AEVM-366 TPS65137AEVM-366 TPS65137AEVM-366 사용자 설명서
제품 코드
TPS65137AEVM-366
Introduction
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1
Introduction
The Texas Instruments TPS65137A EVM uses a TPS65137A 200-mA, dual-output, AMOLED (Active
Matrix Organic Light-Emitting Diode) display power regulator to provide both a positive and negative
power rail. The goal of the EVM is to facilitate evaluation of the TPS65137A. The TPS65137A is designed
to provide best-in-class picture quality for AMOLED displays requiring positive and negative voltage supply
rails. With its wide input voltage range, the device is ideally suited for AMOLED displays, which are used
in mobile phones or smart phones. With this device, the input voltage can be higher than the positive
output voltage and still maintains accurate regulation of OUTP. Using the digital control pin (CTRL) allows
adjustment of the negative output voltage in digital steps. The TPS65137A uses a novel technology
enabling excellent line and load regulation with minimum output voltage ripple by using an LDO post
regulator for OUTP. This is required in order to avoid disturbance of the AMOLED display due to input
voltage transients occurring during transmit periods in mobile phones.
Matrix Organic Light-Emitting Diode) display power regulator to provide both a positive and negative
power rail. The goal of the EVM is to facilitate evaluation of the TPS65137A. The TPS65137A is designed
to provide best-in-class picture quality for AMOLED displays requiring positive and negative voltage supply
rails. With its wide input voltage range, the device is ideally suited for AMOLED displays, which are used
in mobile phones or smart phones. With this device, the input voltage can be higher than the positive
output voltage and still maintains accurate regulation of OUTP. Using the digital control pin (CTRL) allows
adjustment of the negative output voltage in digital steps. The TPS65137A uses a novel technology
enabling excellent line and load regulation with minimum output voltage ripple by using an LDO post
regulator for OUTP. This is required in order to avoid disturbance of the AMOLED display due to input
voltage transients occurring during transmit periods in mobile phones.
1.1
Requirements
The negative output voltage, OUTN, can be adapted through the CTRL one-wire interface to the individual
needs of the application. All components and connectors for this voltage change are supplied in the EVM
except for the host computer and the DC power supply. Software must be downloaded from the TI Web
site at
needs of the application. All components and connectors for this voltage change are supplied in the EVM
except for the host computer and the DC power supply. Software must be downloaded from the TI Web
site at
, if needed.
1.1.1
Power Supply
In order to operate this EVM, only a DC power supply capable of delivering between 2.3 V and 5.5 V at
up to 1.5 A is necessary. The EVM is fully functional, except changing the negative output voltage, with
just a power supply connected.
up to 1.5 A is necessary. The EVM is fully functional, except changing the negative output voltage, with
just a power supply connected.
1.1.2
Host Computer
A computer with a USB port is required to operate this EVM. The TPS65137A software runs on the
personal computer (PC) and communicates with the EVM via the PC’s USB port.
personal computer (PC) and communicates with the EVM via the PC’s USB port.
PC Requirements:
•
Windows™ XP operating system with Service Pack 2
•
USB port
•
Minimum of 280 MB of free hard disk space (610 MB recommended)
•
Minimum of 512 MB of RAM
1.1.3
Software
Texas Instruments provides the software necessary to evaluate the TPS65137AEVM. Check the
TPS65137A product folder on the TI Web site (www.ti.com) for updates to the software.
TPS65137A product folder on the TI Web site (www.ti.com) for updates to the software.
1.2
Application
Active Matrix OLED Power Supply
2
TPS65137A Evaluation Module
SLVU378 – August 2010
Copyright © 2010, Texas Instruments Incorporated