New from Linear Technology is the LTC4000-1, a high-voltage controller and power manager with input maximum power point control (MPPC) that converts virtually any externally compensated DC/DC power supply into a full-featured battery charger.
The IC is capable of driving typical DC/DC converter topologies, including buck, boost, buck-boost, SEPIC, flyback and forward. It offers precision input current monitoring and charge current monitoring and regulation. It operates across a wide 3 V to 60 V input and output voltage range, compatible with a variety of different input voltage sources, battery stacks and chemistries.
The LTC4000-1’s MPPC circuit features an input voltage regulation loop that controls charge current to maintain the input voltage at a programmed level, ideal for solar panels or other high-impedance sources. Applications include high-power battery charger systems, high-performance portable instruments, battery backup systems, and industrial or military battery-equipped devices.
The device features an intelligent PowerPath topology that preferentially provides power to the system load when input power is limited. It controls external PFETs to provide low-loss reverse current protection, efficient charging and discharging of the battery, and instant-on operation to ensure that system power is available at plug-in, even with a deeply discharged battery.
External sense resistors and precision sensing ensure accurate currents at high efficiency, allowing operation with converters that span the power range from milliwatts to kilowatts.
The LTC4000-1’s full-featured controller charges a variety of battery chemistries, including lithium-ion/polymer/phosphate, sealed lead acid (SLA) and nickel-based. The device provides charge status indicators through its FLT and CHRG pins.
Other features of the battery charger include ±0,2% programmable float voltage, selectable timer or C/X current termination, temperature-qualified charging using an NTC thermistor, automatic recharge, C/10 trickle charge for deeply discharged cells and bad battery detection.
The chip is housed in low-profile (0,75 mm) 28-pin 4 x 5 mm QFN and 28-lead SSOP packages, and is guaranteed for operation from -40°C to 125°C.
High-precision current transducer
Power Electronics / Power Management
Danisense announces its new high-precision DP12IP current transducer designed for isolated DC and AC current measurement in demanding PCB-mounted power electronics applications.
Read more...Secure holder for protected 18650 batteries
Power Electronics / Power Management
Designed for protected 18650 batteries up to 70 mm long, the holder offers secure retention for portable, industrial, and embedded applications.
Read more...More room to scale Altron Arrow
Power Electronics / Power Management
With the latest STM32H5 lines from STMicroelectronics, you can now scale within the same platform, from a compact 1 Mbyte device to higher-memory MCUs for graphics-rich and feature-heavy designs.
Read more...Multi-constellation GNSS module in a legacy-compatible footprint Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Telit Cinterion has announced the SE869eK2L, a single-frequency L1 GNSS module designed to help device manufacturers upgrade legacy positioning designs with improved performance and cost efficiency, while preserving design continuity.
Read more...Compact SSI family for industrial automation Altron Arrow
Passive Components
Infineon Technologies has introduced the ISSI20BxxF Solid State Isolator (SSI) family, bringing solid-state isolation technology into high-volume applications traditionally served by photovoltaic isolators (PVIs), photovoltaic relays (PVRs), and electromechanical relays (EMRs).
Read more...Rev 2.0 PolarFire FPGA ethernet sensor bridge Altron Arrow
Computer/Embedded Technology
Smaller, multi-camera platform enables scalable Ethernet architectures for NVIDIA Edge AI systems, while lowering power, cost and integration complexity.
Read more...Surface mount power amplifier for high-power applications RF Design
Power Electronics / Power Management
The GNA-63-5W+, from Mini-Circuits, is a GaN MMIC Power Amplifier (PA) designed for demanding RF applications requiring high efficiency, excellent linearity, and a compact footprint.
Read more...1200 V QSiC modules
Power Electronics / Power Management
SemiQ Inc has launched the QSiC Dual3, a family of 1200 V half-bridge MOSFET modules for motor drives in data centre cooling systems, grid converters in energy storage systems, and industrial drivers.
Read more...Universal IR receiver module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Vishay Intertechnology has introduced a new series of infrared (IR) receiver modules for IR remote control applications, which feature a wide modulation frequency acceptance from 30 kHz to 68 kHz.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version