AnalogicTech has introduced the AAT3672, a highly integrated, single-cell Lithium-ion/polymer battery charger and system management IC. Using an innovative three-switch architecture, the dual path device enables simultaneous battery charging and system load management. It automatically reroutes power from the battery to the system without interruption when load requirements exceed available current.
The AAT3672 is a single input dynamic battery charger and control IC, compatible with either an AC power adapter or a USB power source. The device regulates battery charge current and voltage for 4,2 V Li-on battery cells. Battery charge current can be programmed up to 1,6 A.
Three internal switches on the device provide dynamic power sourcing to the system load. If the system load exceeds the input current supply from the input source, the device supplies additional current from the battery cell. It automatically manages distribution of power between the source, the battery and the system simultaneously to support all power needs, charging the battery cell with the maximum amount of current possible.
To help minimise charge time and protect an input source from overload, the AAT3672 features an automatic battery charge current reduction loop that automatically compensates for voltage sags and throttles back the charge current when the input source cannot provide the required load current. This feature protects the charger, system and source supply if an adapter or power source cannot meet the programmed ADP charging mode current demand.
The AAT3672 also features an intelligent thermal loop control system that continuously measures internal circuit die temperature and automatically reduces fast charge current when the device exceeds a preset internal temperature threshold. This function helps optimise charging by maximising charge current under given temperature conditions.
The IC also offers a number of protection features including battery over-voltage, over-current and over-temperature protection circuits, as well as system load current limiting capability. Qualified across the -40°C to +85°C temperature range, the AAT3672 is available in a compact 14-pin, 3 x 3 mm TDFN package.
Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Compact PCB-mount SMPS RS South Africa
Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.
Read more...AC-DC brick PSU Conical Technologies
Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.
Read more...5 kW switching PSU range Conical Technologies
Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.
Read more...Reliable charging range Current Automation
Power Electronics / Power Management
Whether you’re powering essential electronics, keeping emergency equipment operational, or maintaining the performance of critical machinery, the need for dependable charging solutions cannot be overstated.
Read more...Microchip expands its mSiC solutions EBV Electrolink
Power Electronics / Power Management
The highly integrated 3,3 kV XIFM plug-and-play digital gate driver is designed to work out-of-the-box with high-voltage SiC-based power modules to simplify and speed system integration.
Read more...Dual-port USB-C power delivery solution Altron Arrow
Power Electronics / Power Management
Infineon’s CYPD7272-68LQXQ is the tray packing option of the company’s dual-port USB-C power delivery solution and features an integrated dual-port USB-C PD + DC-DC controller.
Read more...Parallel redundancy power module Conical Technologies
Power Electronics / Power Management
The LIR40-40 is a wide input range DC-DC module, with a constant output of 48 V at a nominal output current of up to 40 A.
Read more...Motor protection relay front-end NewElec Pretoria
Power Electronics / Power Management
Newelec’s Motor Protection Relay front-end software isn’t just another tool, it’s a game changer that puts control firmly in your hands.
Read more...High-power three-phase supplies Current Automation
Power Electronics / Power Management
The units from Meanwell can either be supplied with a three-phase three-wire delta input of 196 to 305 V AC, or they can use a three-phase four-wire star connection of 340 to 530 V AC.
printer friendly version