Magnetic Position Sensor

The use of sensors in automotive and industrial applications have dramatically increased, similarly there’s been an increase in number of electrical fields or stray field present in this kind of applications. The magnetic sensors and other sensors are exposed to this stray field that can affect its reliability and system safety. The AS5048 has a stray field immunity that can withstand external stray field. The AS5048 is a 14-bit high-resolution output with 360° angular position sensor that has a maximum system accuracy of 0.05° assuming that the linearization and averaging is done by the external microcontroller. It requires no additional programmer, since a simple programming of the zero position is possible over the interface. Read more

Automotive High-Side Dimming Rear Light

The car lights are significant parts of a car system. The reference design is an automotive high-side dimming rear light. The board is composed of the main component TPS1H100-Q1, high-side power switch with an integrated NMOS power field-effect transistor (FET) and charge pump. The TPS92630-Q1 and TPS92638-Q1, is a three-channel linear and eight-channel linear LED driver, respectively. The reference design also comes with a TPS7B6950, which is a high voltage LDO regulator. The TLC555-Q1 is timer that generates the PWM input for the high-side driver. This reference design uses a body control module (BCM) to supply the rear light system. Read more

Isolated IGBT Gate Driver

The combined high efficiency and fast switching features of Insulated-Gate Bipolar Transistor (IGBT) make it ideal for high current and fast switching applications. On the other hand, a gate driver is the one that accepts low-current input from a controller and produces a high-current drive input for the gate of a high-power transistor that is usually an IGBT. This reference design is an isolated IGBT gate driver, which utilizes ISO5852S from Texas Instruments. The ISO5852S is a 5.7kVRMS, reinforced isolated, IGBT gate driver with split outputs, OUTH and OUTL, providing 2.5A source and 5A sink currents. Read more