The TPS92660 is an 80V input voltage, two string LED driver, which contains a DC / DC buck regulator and a linear channel, which can realize the mixing of bi-color LEDs which are usually white and red. Using the I2C interface and one-time programmable ROM, lighting equipment manufacturers can precisely adjust the white relative color temperature (CCT) and brightness of the lighting equipment during the production process to provide special lumen quality for regional, retail, and architectural lighting. This color adjustment method does not require expensive LED picking, which can reduce system cost. Analog or pulse width modulation (PWM) input signals can be used for brightness and color adjustment after ROM programming.
TPS92640 and TPS92641 are industry-leading contrast ratio 85V input voltage, adjustable frequency synchronous step-down DC / DC LED controller, can provide indoor and outdoor area lighting and LED projector required smooth depth dimming mode. The two controllers accept analog and PWM inputs to support 500: 1 and 2500: 1 dimming ratios, respectively. Continuous conduction mode operation can maintain the dimming degree of light, so that TPS92640 / 1 can provide a true analog "zero dimming" function. The TPS92641 adds an input and an output pin to support 20,000: 1 ratio parallel shunt FET dimming.
For intelligent lighting systems, TPS92660 and TPS92640 / 1 can be used with TI 16-bit ultra-low power MSP430 microcontroller to achieve dimming control.
TPS92660 and TPS92640 / 1 belong to TI's extensive LED driver product line, which includes DC / DC LED drivers LM3409, LM3421 / 3/4 and TPS92551, and AC / DC LED drivers TPS92075, LM3447 and TPS92310 / 11/14.
The main characteristics and advantages of TPS92660 and TPS92640 / 1:
TPS92660 two string LED driver
I2C and on-duration programmable ROM for adjusting the white CCT and lumen output without picking LEDs;
Support PWM or analog dimming for brightness and color adjustment;
The integrated 3V (error accuracy +/- 3%) voltage reference can be used for household circuits.
TPS92640 / 1 synchronous buck controller
Analog, PWM and shunt FET dimming support contrast ratios of 500: 1, 2500: 1 and 20,000: 1 respectively;
7 to 85V wide input operating voltage is suitable for various LED string voltages;
Synchronous continuous conduction mode, constant current output plus simple compensation scheme not only provide high system efficiency, but also simplify circuit design.
TPS92660, TPS92640 and TPS92641 are available in 20-pin PowerPad â„¢ TSSOP, 14-pin PowerPad TSSOP and 16-pin PowerPad TSSOP packages
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Characteristics
1. Light weight , high heat dissipation, low power consumption
2. Compatible multi-source input such as DVD ,DVI, VGI
3. Type of weather conditions:snow & wind loading , humidity, lightning protection
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Shenzhen Priva Tech Co., Ltd. , https://www.privaled.com