14 November 2018
Power Electronics / Power Management
Monolithic Power Systems’ HR1200 is a high-performance controller that integrates an advanced digital PFC (power factor correction) controller and a half-bridge LLC resonant controller. It requires fairly low input power at no load or ultra-light load, making it compliant with certain Energy using Product directive (EuP) specifications.
The PFC of the HR1200 employs a patented average current control scheme, which can operate both in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) according to the instantaneous condition of the input voltage and output load. The IC exhibits high efficiency and high power factor at light load.
In CCM, the HR1200 can be used in applications up to 500 W with minimal board size limitations. The performance of the PFC can be optimised by programming multiple parameters through an I²C GUI. Programming can be completed either by the factory or by the customer referring to a detailed user guide.
The half-bridge LLC resonant converter achieves high efficiency with zero-voltage switching (ZVS). The HR1200 implements an adaptive dead-time adjustment (ADTA) function to guarantee ZVS in different load conditions. Additionally, it can prevent the LLC converter from operating in capacitive mode, making it more robust and easier to design.
The chip integrates a high-voltage (HV) current source internally for start-up. When the AC input is removed, the HV current source also functions as an X-cap discharger. Such features are helpful to reduce related devices, thus reducing power consumption at no load.
The HR1200 has multiple protection features including thermal shutdown (TSD), open-loop protection (OLP), over-current protection (OCP), over-voltage protection (OVP) and brown-in/brown-out protection.
Redefining entry-level MCUs NuVision Electronics
DSP, Micros & Memory
The company positions the GD32C231 series as a ‘high-performance entry-level’ solution designed to offer more competitive options for multiple applications.
Read more...3-terminal filters for automotive applications RS South Africa
Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.
Read more...Simple battery charger ICs for any chemistry Altron Arrow
Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.
Read more...Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.
Read more...Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.
Read more...Power and precision in a compact package Conical Technologies
Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.
Read more...Robust PoE module CST Electronics
Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.
Read more...Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.
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