EVQ7928-RH-00A

The EVQ7928-RH-00A is an evaluation board designed to demonstrate the capabilities of the MPQ7928-AEC1, a power management solution that integrates three high-efficiency, step-down DC/DC converters and a low-noise, low-dropout (LDO) regulator. 

The MPQ7928-AEC1’s unique, dual-stage, 18V buck architecture maximizes efficiency for the 1.8V image sensor input/output (I/O) rail in the complementary metal-oxide-semiconductor (CMOS) sensor found in high-resolution camera modules. Constant-on-time (COT) control with phase-locked loop (PLL) provides a fast transient response time for the MPQ7928-AEC1. The 2.2MHz fixed switching frequency (f_SW) during continuous conduction mode (CCM) greatly reduces the size of external inductors and capacitors. 

The MPQ7928-AEC1’s configurable parameters are set via the I²C digital interface without requiring any additional hardware changes, which allows for application flexibility. The output voltage (V_OUT), power sequence, and protection thresholds can all be adjusted through the interface. 

Fault statuses can also be monitored. Protection features include input under-voltage lockout (UVLO), over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown (TSD). The built-in power good (PG) indicator determines whether the MPQ7928-AEC1 operates properly. 

The EVQ7928-RH-00A is a fully assembled and tested evaluation board. The MPQ7928-AEC1 is available in a QFN-15 (2.5mmx3.5mm) package with wettable flanks, and it is available in AEC-Q100 Grade 1.