austriamicrosystems has unveiled the latest additions to its comprehensive LED TV drivers and support IC portfolio. The new devices include three LED drivers and a new LED power supply IC. These new ICs plus other LED drivers will be demonstrated at the FPD International Exhibition & Convention, October 26 - 28, in Yokohama, Japan. austriamicrosystems will also use the convention to demonstrate its complete ambient light sensor, proximity detection and colour sensor product offering for HDTVs, tablets and mobile devices.
The AS3822 & AS3823 are 6- and 8-channel LED driver ICs and are fully compatible with the recently launched 16- and 12-channel AS3820 and AS3821 LED drivers. This compatibility will enable set makers to use the same hardware design and software for their whole range of LED edge-lit TVs. All driver ICs in this portfolio employ the company’s enhanced digital power feedback control technique to achieve the lowest possible energy consumption. Additionally, smart dimming functionality further reduces power consumption while addressing the needs for the latest 3D TV designs and the highest picture quality.
In addition to these new driver ICs, the AS3810 16-channel LED driver with internal FETs is the 3rd generation of driver ICs for direct-lit TVs. It features industry leading channel-to-channel performance and all the functionality needed to optimise power consumption in large direct-lit TVs. Multiple ICs are easily combined to realise even dozens of dynamically dimmed backlighting segments, further reducing power consumption and fully supporting the best possible contrast. This full driver IC portfolio meets the design needs of all TV architectures with the highest current accuracy for the best light uniformity, the latest 3D features, and also reduced system cost.
All of these driver ICs match with the new AS1390 combination boost controller / buck converter, which has been optimised for the power needs of LED TV backlights. It supplies the LED backlight with a high-power constant-frequency boost controller optimised for up to 90 V/3 A combined with a 5 V/100 mA step-down converter to supply a microcontroller or other devices. In addition to offering special features for 3D, the AS1390 supports the needs of low energy consumption for LED TVs with over 95 % power efficiency. The continuous conduction mode of the AS1390 provides an enhanced bandwidth and transient response. It also includes all required safety features, including over-voltage, over-current and over-temperature protection.
In addition to this range of LED TV backlighting solutions, smart light sensors from TAOS, the leading global supplier of intelligent light sensors, were recently added to austriamicrosystems product portfolio. These devices significantly contribute to further reducing energy consumption through use of ambient light sensors to automatically adjust the screen brightness to suit the surrounding light environment.
