Micrel Demonstrating Automotive and Industrial Solutions during Electronica
Micrel, Inc. is previewing a comprehensive line of IC solutions aimed at the growing industrial and automotive markets in Europe at Electronica 2014 in Munich Germany. Live demonstrations of products will include: A motorcycle LED Headlamp demo that includes Micrel's MAQ3203 BUCK LED driver. The MAQ3203, an AEC-Q100 step-down High Brightness LED (HBLED) driver IC, reduces the complexity and cost of high current LED driver solutions in automotive lighting applications. The demonstrations also include an innovative brushless motor solution in the form of a BLDC motor driving an automotive motor pump.
The MAQ3203 is capable of driving multiple HBLEDs in series at more than 90 percent efficiency with ±5 percent current accuracy from input voltages of 4.5V to 42V. With its hysteretic control architecture and high-side current sense scheme, the device provides a solution to drive the HBLEDs with constant current. The MAQ3203 operating frequency is adjustable up to 1.5MHz which allows flexibility in design and offers a frequency dithering feature to mitigate EMI. The IC features a dedicated pwm dimming pin, an enable pin for very low power shutdown, over temperature protection and an under-voltage lockout. The MAQ3203 has an external power switch and requires no external compensation. The device is available in a SOIC-8L package and will drive two 1.2A LED strings demonstrating both high and low beam capabilities.
Micrel is also demonstrating an innovative brushless motor solution in the form of a BLDC motor driving an automotive motor pump. The demand for higher efficiency is increasing based on new government regulations and consumer requirements. Because electrical motors are one of the largest consumers of electrical power, motor driver designers in the automotive and industrial space are in need of more efficient and reliable solutions. The MIC4606 is one of the most robust and power efficient Half Bridge MOSFET drivers designed to address a wide variety of applications including motor drives, UPS and dc-ac inverters.
The MIC4606 features Adaptive-Dead-Time and Shoot-Through Protection that actively monitors the Half Bridge to minimize the time between high and low side MOSFET transitions, thereby maximizing power efficiency. Anti-Shoot-Through circuitry prevents erroneous inputs and noise from turning both MOSFETs on at the same time. Along with Micrel’s MIC5235, a 150mA highly accurate, low dropout regulator with high input voltage and ultra-low ground current, the demo illustrates a highly efficient, cost effective solution.
