In this modular approach, a design can be extended for multiple optical output levels. And as the LED light output performance is enhanced, the LED module to provide the same light output level, the required light bar is better. Each strip is equipped with a dedicated DC-DC LED driver, such as ansemel's CAT4201 high efficiency step-down LED driver. CAT4201 is specifically optimized for driving high-current leds using proprietary switching control algorithms to provide high energy efficiency and accurate LED current stabilization up to 350 mA. CAT4201 can be supplied at up to 36 V and is compatible with 12 V and 24 V standard lighting systems. Figure 3 shows the CONFIGURATION of CAT4201's high-voltage LED driver. The n-channel MOSFET on the periphery supports high-voltage input: LED power up to 30 W with an input voltage of 100 V. LED power up to 13 W with 50 V input.

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