Writer: Bipin Pande, Technical Advertising and marketing Supervisor, STMicroelectronics Pvt Ltd

STMicroelectronics’ L99LDLH32 linear present regulator delivers a handy, built-in answer for dynamic automotive lighting managed utilizing CAN-FD Gentle protocol. Splendid to be used with OLED lamps that present shiny, homogeneous, and high-contrast lighting from a small floor space, the brand new driver lets designers produce complicated gentle patterns and results that improve security and styling.

Monolithically built-in utilizing ST’s BCD9sL course of, the L99LDLH32 is AEC-Q100 certified. It’s accessible as 7mm x 7mm QFN48 bundle with wettable flanks and an uncovered thermal pad to assist dissipation. With 32 regulated present sources, independently programmable from 1mA to 15mA, the L99LDLH32 can drive particular person pixels in exterior and inside lighting purposes. World dimming can also be supplied, with 8-bit decision. Whereas powered on the automobile battery voltage, the driving force produces outputs of as much as 35V to cowl a large gentle emitter forward-voltage unfold.

The built-in CAN FD Gentle protocol handler and transceiver simplify connection to the automobile’s communication infrastructure and controlling area ECU (digital management unit). Primarily based on confirmed business requirements, CAN FD Gentle’s synchronized commander/responder communication, conceived for controlling easy units like lights and sensors, saves pricey exterior elements equivalent to timing crystals. Then again, the information bandwidth of 1Mbit/s permits designers to create complicated animated gentle patterns and permits easily modulated transitions and dimming.

As well as, on-chip non-volatile reminiscence permits programming of parameters equivalent to present degree and PWM dimming for stand-alone operation, to supply a failsafe mode to cowl malfunctioning of the communication bus or controller. Focusing on roles together with safety-critical lighting equivalent to taillights, stoplights, and switch indicators, the L99LDLH32 gives options for a excessive degree of practical security. These embody a fault-status pin, voltage and temperature displays, a programmable timeout watchdog, and short-circuit and open-load detection. As well as, frequency dithering optimizes and minimizes electromagnetic emissions.

L99LDLH32 Eval board gives a straightforward technique to join L99LDLH32 into present techniques.

Gadget and Eval boards and able to order. Please contact native ST gross sales workplace for pricing choices and pattern requests.