|
|
|
OLED driver for small displays
11 June 2008, Opto-Electronics
Texas Instruments has introduced an organic light emitting diode (OLED) power driver designed to enhance image quality for small form factor displays up to 2,5 inches.
The TPS65136 power IC supports active matrix OLED (AMOLED) displays used in mobile phones, digital cameras and portable media players.
AMOLED displays allow each pixel to emit its own light, resulting in high colour saturation, thin form factor, high contrast ratio, fast response time and low power consumption. The TPS65136 manages power to AMOLED displays by providing positive and negative voltages, and supplying less current and lower voltages than passive matrix displays.
With just one 2,2 μH inductor to generate both outputs on the single-inductor, multiple-output converter technology, the device provides high picture quality and achieves a small solution size with a low component count. A buck-boost topology allows the device to generate a positive voltage up to 4,6 V and adjustable negative output voltage down to -7 V. In addition, the input voltage can be above or below the positive output voltage, allowing it to support new batteries with a starting voltage up to 4,8 V.
The unique converter technology results in excellent line and load regulation, which is required to avoid potential display disturbances in mobile devices during transmit periods. The converter also lowers the switching frequency as the load current decreases, to maintain high efficiency over the entire load current range. The TPS65136 maintains the switching frequency above the audible range with a voltage-controlled oscillator to avoid causing audible noise from the vibration of the ceramic output capacitors. |
|
|
|
| Share: |
 |
Via email client |
 |
 |
 |
 |
print |
|
|
|
|
|
Further reading:
- Managing the IoT on an energy budget
28 August 2019, Altron Arrow, Telecoms, Datacoms, Wireless, IoT, DSP, Micros & Memory
Historically, users wanted MCUs because they could process data and solve problems faster than a human could. MCUs also help make products more convenient and consistent in behaviour. The microcontroller ...
- Accelerometer with high-accuracy temperature sensor
28 August 2019, Altron Arrow, Analogue, Mixed Signal, LSI
The STMicroelectronics LIS2DTW12 combines a MEMS 3-axis accelerometer and a temperature sensor on a single die for use in space-constrained and battery-sensitive detectors such as shipping trackers, wearables ...
- LED flicker, and how to prevent it
28 August 2019, Avnet South Africa, Opto-Electronics
With the growing popularity of LED lighting, especially now that very cheap LED luminaires are coming to the market, flicker is becoming more of a problem.
Flicker, a repetitive switching on and off ...
- Digital fibre-optic sensor
28 August 2019, Vepac Electronics, Opto-Electronics
The DFS digital fibre-optic sensor series from Tri-Tronics is designed to provide reliable detection using plastic fibre-optic light guides.
The slim-line housing with protective lid will fit in a variety ...
- All-in-one light pipe system
28 August 2019, Vepac Electronics, Opto-Electronics
Bivar’s Zero Light Bleed adaptor technology, with built-in surface-mount LED, channels light directly to the lens, eliminating disruptive light bleed.
The all-in-one adaptor system is built with optimum ...
- Pressure and temperature sensor
28 August 2019, Altron Arrow, Analogue, Mixed Signal, LSI
The MS5837-02BA pressure sensor module from TE Connectivity is an ultra-small, gel-filled pressure sensor optimised for both altimeter and barometer applications. Designed for consumer devices such as ...
- Motion sensor with machine learning
28 August 2019, Altron Arrow, Analogue, Mixed Signal, LSI
STMicroelectronics has integrated machine learning technology into its advanced inertial sensors to improve activity tracking performance and battery life in mobiles and wearables. The LSM6DSOX iNEMO ...
- Secure MCU for contactless banking and ID
28 August 2019, Altron Arrow, DSP, Micros & Memory
Featuring the latest 40 nm Flash process as well as enhanced RF technologies, the STMicroelectronics ST31P450 dual-interface secure microcontroller (MCU) delivers high robustness and performance for contactless ...
- FPGA video and image processing ecosystem
26 June 2019, Altron Arrow, Programmable Logic
Microchip Technology, via its Microsemi subsidiary, announced its Smart Embedded Vision initiative that provides solutions for designing intelligent machine vision systems with Microchip’s low-power PolarFire ...
- 80 V buck driver for LEDs
26 June 2019, Altron Arrow, Power Electronics / Power Management
Infineon Technologies’ new LED driver, the ILD8150/E, features an innovative hybrid dimming mode technology for achieving 0,5 percent of the target current. With its supply voltage range from 8 V up to ...
- Adaptive LED current ripple suppressor
26 June 2019, Altron Arrow, Power Electronics / Power Management
Diodes Incorporated announced the availability of the AL5822 LED current ripple suppressor, which provides high levels of ripple suppression while maintaining high power factor for commercial and industrial ...
- Fingerprint sensor module
31 July 2019, Altron Arrow, Computer/Embedded Technology
The One Touch Access 100-USB from NEXT Biometrics is a high-quality, bezel-less USB fingerprint area sensor module designed for integration into custom application products such as notebooks, tablets, ...
|
|
