Analog Devices Inc. MAX77932C Dual-Phase Switched-Capacitor Converter

The MAX77932C SCC is a DC-DC converter that only utilizes capacitors as the energy storage device. Compared to a buck converter which utilizes inductors, the SCC topology achieves higher efficiency with a smaller solution size and lower cost.  The high switching frequency of the MAX77932C, up to 1.5MHz, reduces the size and number of capacitors required, further minimizing the solution footprint. This device ensures safe operation with integrated overvoltage, under-voltage, overcurrent, and thermal protection, and also minimizes Electromagnetic Interference (EMI) with built-in frequency dithering. In addition to the small solution size, lower EMI, and protection features, the class-leading peak efficiency of 98.5% of the MAX77932C simplifies thermal design and makes it ideal for consumer, medical, and industrial applications.

The MAX77932C features an I²C compatible, 2-wire serial interface consisting of a bidirectional Serial Data Line (SDA) and a Serial Clock Line (SCL). The IC supports SCL clock rates up to 3.4MHz. The converter parameters such as OCP, OVLO, or UVLO thresholds, switching frequency, soft-start current, and duration are easily adjustable through the I²C interface. The IC consumes a low quiescent current (I_Q) of 30μA when operating and 4μA in shutdown. The Analog Devices MAX77932C Dual-Phase Switched-Capacitor Converter is available in a tiny, lead-free 0.4mm pitch, 2.4mm x 2.8mm 42-pin Wafer-Level Package (WLP).