MAX20844B

The MAX20844B/MAX20845B is a feature-rich smart power-stage IC designed to work with Analog Devices controllers to implement a high-density multiphase voltage regulator. Multiple smart power-stage ICs plus a controller provide a compact synchronous buck converter that includes accurate individual phase current and temperature reporting through PMBus™. These smart power-stage devices include fault-protection circuits for overtemperature, VX short, I/O open/short, supply undervoltage lockout (UVLO), and main power-supply overvoltage lockout (OVLO). The MAX20844B/ MAX20845B immediately shut down on fault detection, communicating the Fault_ID to the controller.

Monolithic integration and advanced packaging technology allow high-switching frequencies with significantly lower losses than conventional implementations. Phase shedding and discontinuous conduction modes (DCM) optimize efficiency over a wide range of load currents. The MAX20845B integrates an internal LDO simplifying bias generation for applications that do not have 1.8V available.

The MAX20844B/MAX20845B are available in a 30-pin FCLGA package thermal pad (4mm x 5mm).

APPLICATIONS

• Mid-Current Voltage Regulators
  • VR13, VR13.HC, and VR14 CPU Low-Power Rails
  • AI, GPUs Auxiliary Rails
• Servers, Workstations, and Enterprise Storage
• Communications and Networking Equipment