The design of an LLC resonant converter illustrates how eGaN FETs can shrink the physical size of modern supply circuitry. Alex Lidow, Efficient Power Conversion Corp. The rapid expansion of computing and telecommunications has brought a migration to a 48 V-based power architecture. Applications for this higher-voltage architecture include artificial intelligence, 5G, big data, and […]
Controllers
Improvements in stacked load architectures
Stacked-load schemes have made power conversion more economical in server racks. New developments in this technology promise to provide additional gains in efficiency. Laszlo Lipcsei, Alexandr Ikriannikov, Di Yao — Maxim Integrated, now part of Analog Devices Load currents continue to rise in server applications while rail voltages tend to drop. Consequently, the conduction losses […]
Rack-mounted, standalone, stepper motor controllers drive single and multi-axis stages
To complement the Optimal Engineering Systems (OES) expanding line of single and multi-axis motion control stages, OES has added the ADAGIO-X-STPR Series of Motion Control Systems. The ADAGIO-X-STPR Series of rack-mounted Stand-alone Stepper Motor Controllers are cost-effective solutions for controlling and driving single and multi-axis stepper motor stages such as AQ single and dual axes […]
Active clamp flyback controller targets power adapters up to 100 W
Silanna Semiconductor has launched a new integrated active clamp flyback (ACF) controller that will reduce the operational and no-load/ standby power consumption of high-efficiency chargers and adapters while driving down component count, BOM cost, and size. The SZ1131 ACF controller is the latest addition to Silanna Semiconductor’s family of CO2 Smart Power technologies. These technologies […]
Flyback LED controllers for LEDs supporting flicker-free dimming
Cost-effective dimmable and intelligent LED systems are expected to increase the market share disproportionately in the coming years. Introducing the ICL8800, ICL8810, and ICL8820 single-stage flyback LED controllers for constant output voltages, Infineon Technologies AG addresses the need of LED driver manufacturers in this regard. With their unique features, the ICs meet the necessary performance requirements for LED lighting applications, such as LED […]
Ruggedized dc/dc converters help keep ocean water clean
Ruggedized power modules now play a role in minimizing the contamination of sea water from the world’s shipping industry. Axel Schütz, TRACO Power There are more than 90,000 ships of various types and sizes on the seven seas: Cargo and container ships, oil, gas and chemical tankers, ferries, tugboats and so forth. One aspect common […]
Single-channel interface ICs integrate Type-C/PD controller element
In order to strengthen its portfolio of devices supporting USB power delivery, FTDI Chip has unveiled the FT23xHP series. These compact, streamlined interface ICs are supplied in QFN packages. They support operation across just one channel, thereby enabling systems that are subject to space or budgetary constraints to still benefit from elevated levels of power […]
PFC controller IC carries integrated reverse-recovery charge-boost diode
The HiperPFS-4 power factor correction (PFC) controller IC is now available with an integrated Qspeed low reverse recovery charge (Qrr) boost diode. This highly integrated solution delivers greater than 98% full-load efficiency in PCs, TVs, and similar applications between 75 W and 400 W. The new HiperPFS-4 IC combines continuous conduction mode (CCM) PFC control […]
High frequency, ZVS flyback switcher ICs target phone/laptop/tablet charging
Power Integrations announced the InnoSwitch4-CZ family of high frequency, zero voltage switching (ZVS) flyback switcher ICs. InnoSwitch4-CZ devices incorporate a robust 750 V primary switch using Power Integrations’ PowiGaN technology and a novel high-frequency active clamp flyback controller to facilitate a new class of ultra-compact chargers suitable for phones, tablets, and laptops. The first consumer devices based […]
GaN FET USB-C power adapter reference design boasts 30 W/in3 power density
Transphorm, Inc. announced a world-class GaN power adapter reference design. The solution is an open frame, 65W USB-C Power Delivery (PD) charger that combines Transphorm’s SuperGaN Gen IV platform with Silanna Semiconductor’s proprietary Active Clamp Flyback (ACF) PWM controller. Together, the technologies yield an unprecedented peak efficiency of 94.5 percent with an uncased power density […]
