{"product_id":"l99asc03-three-phase-bldc-motor-pre-driver-ic-sensorless-control-for-automotive-transmission-mechatronic-systems","title":"L99ASC03 Three-Phase BLDC Motor Pre-Driver IC – Sensorless Control for Automotive Transmission \u0026 Mechatronic Systems","description":"\u003cp\u003eThe L99ASC03 is a multifunctional system IC purpose-built for advanced three-phase motor control in automotive powertrain and transmission applications .\u003c\/p\u003e\n\u003cp\u003eIt operates as a pre-driver for six external N-channel MOSFETs in a bridge configuration, enabling precise and efficient control of brushless DC motors .\u003c\/p\u003e\n\u003cp\u003eThe device integrates a 5 V low-drop voltage regulator capable of delivering up to 200 mA in continuous mode, providing a stable power supply for an external microcontroller .\u003c\/p\u003e\n\u003cp\u003eThis chip supports sensorless motor control through its advanced BEMF (Back Electromotive Force) detection IP, significantly simplifying system design and reducing external component count .\u003c\/p\u003e\n\u003cp\u003eThe integrated Serial Peripheral Interface (SPI) allows full configurability of device parameters, operating modes, and facilitates comprehensive diagnostic readouts .\u003c\/p\u003e\n\u003cp\u003eFor demanding automotive environments, it includes a window watchdog and fail-safe functionality to ensure system reliability and safe operation under fault conditions .\u003c\/p\u003e\n\u003cp\u003eA two-stage charge pump enables 100% duty cycle operation, while PWM switching up to 80 kHz offers flexibility for various motor control strategies .\u003c\/p\u003e\n\u003cp\u003eBuilt-in protection features include programmable overcurrent protection, drain-source monitoring, and open-load detection, safeguarding both the IC and connected loads .\u003c\/p\u003e\n\u003cp\u003eThe analog multiplexer output allows for monitoring of external supply voltages and internal junction temperature, enabling real-time system health tracking .\u003c\/p\u003e\n\u003cp\u003eWith a very low standby current consumption of just 15 µA typical, it is an excellent choice for power-sensitive automotive modules .\u003c\/p\u003e\n\u003cp\u003eHoused in a compact TQFP48 7x7 mm package with an exposed pad for thermal management, it is designed for space-constrained PCB layouts .\u003c\/p\u003e","brand":"Qlnova","offers":[{"title":"Default Title","offer_id":45456366960749,"sku":null,"price":6.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5950\/8845\/files\/L99ASC03.webp?v=1784015172","url":"https:\/\/qlnova.com\/products\/l99asc03-three-phase-bldc-motor-pre-driver-ic-sensorless-control-for-automotive-transmission-mechatronic-systems","provider":"Qlnova","version":"1.0","type":"link"}