Low-Input-Voltage, Smart Power-Stage ICs with Integrated Current and Temperature Sensors

The MAX16625/MAX16627 are feature-rich low input voltage smart power-stage ICs 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 MAX16625/MAX16627 immediately shut down on fault detection, communicating the FaultID 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 MAX16625 is available in a standard (3.25mm x 7.4mm) 12-pin FC2QFN package, while the MAX16627 is in a narrow (3.05mm x 7.25mm) 12-pin FC2QFN package. Both packages have an exposed top-side thermal pad.

APPLICATIONS

* High-Current Multiphase-Voltage Regulators

* AI and Machine Learning ASICs

* Networking ASICs

* Graphics Processors

* Servers, Workstations, and Enterprise Storage

* Communications and Networking Equipment

* Space-Optimized Solution

* Monolithic, Smart Power Stage

* Small Footprint: 22mm2 or 24mm2

* Peak Efficiency with 8-Phase, 600kHz, 4.5V VIN

* 95.4% at 1V VOUT

* 93.1% at 0.6V VOUT

* 300kHz to 1.3MHz Switching Frequency

* Telemetry and Fault Reporting through Controller IC PMBus

* Accurate Temperature Monitoring and Reporting

* Accurate per-Phase Current Reporting

* FaultID Indicates Type of Fault

* SEL Input for Single-/Parallel-Mode Operation (MAX16625C/MAX16627C) or VXFAULT Output (MAX16625A/B, MAX16627A/B)