The EVQ77240FS-LT-00A evaluation board is designed to demonstrate the capabilities of the MPQ77240FS-AEC1, a quad-channel, high-side power switch for a nominal 0.8A load per channel. The device covers a 5V to 16V input voltage (V_INA/B) range.

The MPQ77240FS-AEC1 supports an internal current limit and a configurable, high-accuracy current limit via the I²C. This helps to clamp the inrush current under short-circuit conditions, which improves system reliability. A selectable start-up slew rate also helps to reduce the inrush current during start-up. In addition, a fast-off function can quickly turn off the device if the channel current increases sharply.

The MPQ77240FS-AEC1 communicates to the microcontroller (MCU) via the I²C interface. The device supports up to six addresses, set via an external resistor.

With the help of an internal analog-to-digital converter (ADC), the channel currents, supply voltages, reference voltage (V_REF), and output voltages (V_OUT) can be obtained without additional external circuitry. Full diagnostics and protections are developed for the device, including input over-voltage (OV) and under-voltage (UV) detection, output OV for each channel, open-load and short-to-battery detection, over-current protection (OCP), fast-off short-circuit protection (SCP), and over-temperature (OT) shutdown. Average and peak current detection improves diagnostic reliability in driver monitoring systems (DMS). Fault statuses can be reported via both the FT pin and I²C interface.

The MPQ77240FS-AEC1 is available in a TQFN-17 (3mmx4mm) package. It is available in AECQ100 Grade 1 and compliant with AEC-Q100-012 Test Grade A.