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.
Schneider Electric partners with Drakenstein Municipality Schneider Electric South Africa
Power Electronics / Power Management
Drakenstein Municipality, situated in Paarl in the Western Cape, is one of the first distribution utilities globally to implement Schneider Electric’s green, SF6-free RM AirSeT switchgear with pure air technology and native digital connectivity.
Read more...E-Mobility: navigate safety, interoperability and conformance Concilium Technologies
Power Electronics / Power Management
Although the concept of electric vehicles is not a new one, the market remains in its infancy, and is not well-regulated or fully operational. This presents a number of challenges for manufacturers throughout the EV and EVSE ecosystem.
Read more...Webinar: Decarbonise with industrial drives
Power Electronics / Power Management
Infineon's TRENCHSTOP IGBT7 and CoolSiC technologies increase the efficiency of your industrial drive design, ultimately resulting in cost savings for you, and a more sustainable future for all.
Read more...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...Hardware architectural options for artificial intelligence systems NuVision Electronics
Editor's Choice AI & ML
With smart sensors creating data at an ever-increasing rate, it is becoming exponentially more difficult to consume and make sense of the data to extract relevant insight. This is providing the impetus behind the rapidly developing field of artificial intelligence.
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.
printer friendly version