International Rectifier introduced the local interconnect network (LIN)-controlled alternator-regulator. In contrast to analog interfaces, The platform offers integrated programmable load response control features, programmable field excitation of current or temperature and regulator feedback of fault status. The LIN solution can be uniquely addressed for compatibility with up to 15 other modules on the bus and all data can be transmitted or received in a single pass. The LIN interface provides a simplified method of reliably achieving the bi-directional communication required for maximum alternator performance in an intelligent charging system. The LIN serial interface is used by the engine control unit (ECU) to transmit charging voltage setpoint from 10.7V to 16V, load response control ramp and cut-off speed and the field excitation limit. The voltage setpoint command can also disable the field driver for a momentary no-output condition. Signals transmitted to the ECU from the regulator include field excitation duty cycle, current or temperature (customer-defined) and the fault status. Transmitted fault codes provide unique indication for mechanical, electrical, temperature, communication and timeout errors. In addition, the LIN-controlled alternator-regulator includes short-circuit protection, EMI and ESD suppression and consumes less than 200 microamps standby current. The IR LIN-controlled alternator regulator is assembled using thick-film hybrid technology. The hybrid circuit can be customized to the application to optimize performance and reliability, and can be assembled into a custom housing with an insert-molded lead-frame specifically designed for flame-soldering or heavy wirebonding.