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滤波器
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解决方案说明
Car headlights, taillights and flashers reliability represent a key factor for car driver and pedestrian safety: ST offers a wide selection of high- and low-side drivers to turn interior, front and rear lights from higher power “front beam” lamp to low power loads as indicators and back lights.
Target Applications
Front LED lighting systems
Low Beam
High Beam
Daytime Running Light
Turn Indicator
Position, Side and Fog Light
主要产品优势
The L99LD21 is a flexible LED driver, which is specifically designed for the control of two independent high brightness LED strings for automotive front lighting applications. It consists of a high efficiency monolithic boost controller and a dual buck converter.
with fixed frequency architecture and programmable by SPI, with input current limitation, overvoltage protection (OVP) and constant voltage control
Buck regulator
Lossless current sensing without need of external components, very accurate LED current setting programming inductor's peak current and peak-to-peak current ripple
Adjustable peak current by SPI and adjustable current ripple by SPI
Integrated PWM generation unit with 10-bit resolution and phase shift
LED voltage digital feedback through SPI
2 soldered L99LD21 flexible LED drivers
Board size 100 x 55 mm
Two extension headers (2 x 36 pin - 100 mil) for quick connection to SPC560B-DIS discovery board
Controllable by dedicated GUI available on www.st.com
Free ready to run application firmware available on www.st.com, to support quick evaluation and development
The L99LD21-ADIS discovery board enables you to drive four independent high brightness LED strings for automotive front lighting applications by connecting it to the SPC560B-DIS discovery board, application firmware examples and GUI are available
Estimated cost
Estimated cost is an approximate order cost without tax and shipment. Final cost (products, TAX and shipping) will be provided at the check-out.
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All Evaluation Features
2 soldered L99LD21 flexible LED drivers
Board size 100 x 55 mm
Two extension headers (2 x 36 pin - 100 mil) for quick connection to SPC560B-DIS discovery board
Controllable by dedicated GUI available on www.st.com
Free ready to run application firmware available on www.st.com, to support quick evaluation and development
