描述 Description

The LM10520 is a single-phase Energy Management Unit (EMU) that actively reduces system-level power consumption by utilizinga continuous, real-time, closed-loop Adaptive Voltage Scaling (AVS) scheme.The AVS technology enables optimum energy managementdelivery to the load in order to maximize system-level energy savings.
The LM10520 operates cooperatively with PowerWise? AVS-compatible ASICs, SoCs, and processors to optimize supply voltagesadaptively over process and temperature variations.The device is controlled via the high-speed serial PWI 2.0 open-standardinterface. It also supports Dynamic Voltage Scaling (DVS) using frequency-voltage pairs from pre-characterized lookup tables.
The LM10520 features a fixed-frequency voltage-mode PWM control architecture which is adjustable from 50 kHz to 1MHz withone external resistor.In addition, the LM10520 allows the switching frequency to be synchronized to an external clock signalover the range of 250 kHz to 1MHz.This wide range of switching frequency gives the power supply designer the flexibilityto make better tradeoffs between component size, cost and efficiency.
Features include the ability to startup with a pre-biased load on the output, soft-start, input under-voltage lockout (UVLO)and Power good (based on both under-voltage and over-voltage detection). In addition, the soft-start pin can be used for implementingprecise tracking, for the purpose of sequencing with respect to an external rail.
Key Specifications

特性 Features

·Typical power savings with AVS: 20 to 50%
·PWI 2.0 interface
·7-bit AVS control for one output (typical range of 0.6V to 1.2V)
·Precision enable
·Integrated, non-overlapping NFET drivers
·Switching frequency over 50 kHz to 1MHz
·Switching frequency synchronize range from 250 kHz to 1MHz
·Startup into pre-biased output
·Power Stage input from 1V to 14V
·Control stage input from 3V to 6V
·Power Good flag and shutdown
·Output over-voltage and under-voltage detection
·Low-side adjustable current sensing
·Adjustable soft start
·Tracking and sequencing with shutdown and soft-start pins
·eTSSOP-28 package