Resolver-to-digital Interface with power supply and amp

The PGA411-Q1 device, from Texas Instruments, is a resolver to digital converter, with an integrated exciter-amplifier and boost-regulator power supply. It is capable of both exciting and reading the sine and cosine angle from a resolver sensor. The integration of the exciter amplifier and boost supply with protection in the device enables cost reductions of the bill of materials and space reductions on the printed circuit board because of the elimination of most external and passive components. The device also has an internal clock for generating a sine wave used for sensor excitation. The architecture of the analog front-end allows the user to output 10 bits or 12 bits of resolution for the angle position and velocity. Because of high integration, the device has diagnostics and protection on each internal block inside the device. The integrated diagnostics monitor can signal a fault condition through a dedicated pin which can be used as a MCU interrupt. These features allow flexibility in both resolver sensor choice and platform scalability. Additionally, the device was designed according to the requirements of ISO26262 for functional safety applications. The device is suitable for motor control, HEV/EV motor inverters, electrical power steering, integrated start-stop generators, servo drives, AC drives, industrial robots, CNC machinery, elevators/lifts and injection moulding machinery.