This smart bicycle tail light and alarm system enables the user to select different blinking patterns for different riding situations such as stops, braking and emergency situations. Users can also trigger a horn as an alarm system and theft deterrent. A Bluetooth® Low Energy (LE) system-on-chip (SoC) is used as a central control unit, reading data from a connected accelerometer and controlling the connected LEDs and horn. To maximize the horn's sound-pressure, it is driven by an H-bridge equipped, I2C controlled high-voltage GreenPAK™ (HVPAK™) programmable mixed-signal matrix, supplied from the reverse boost voltage of the charger PMIC. Additionally, different LED configurations can be selected, taking advantage of the Bluetooth LE SoC's integrated ADC and the PMIC's adjustable boost output voltage in combination with the HVPAK's second H-bridge to control e.g., two different LED colors without any additional discrete switches.
Renesas' complementary product portfolios of Analog + Power + Embedded Processing + Connectivity work together to deliver comprehensive solutions. Our product experts have developed "Winning Combinations," compelling product combinations that help our customers accelerate their designs and get to market faster.