The difference between high-side and low-side power switching is not apparent to many new designers, but it is a critical aspect of a viable circuit. Applying power (voltage and current) to a load and removing it using a mechanical or electronic switch is a requirement in most systems. Even if the system is powered on, […]
AC-DC
What are the different single-phase transformerless PV inverter configurations?
A transformerless PV inverter has no galvanic isolation between the input and the output, leading to current leakage problems. Parasitic capacitance plays a crucial role in the circulation of leakage current. Several types of transformerless PV inverter configurations can address this issue. This FAQ discusses why parasitic capacitance matters and the four commonly used configurations […]
Flyback controllers feature adaptive synchronous rectification for AC-DC conversion
Nexperia introduced a new series of AC/DC flyback controllers as the latest additions to its continuously expanding portfolio of power ICs. The NEX806/8xx and NEX8180x are designed for GaN-based flyback converters in devices such as power delivery (PD) chargers, adapters, wall sockets, strip sockets, industrial power and auxiliary power supplies, and other AC/DC conversion applications […]
AC-DC power supplies target cardiac floating requirements
Advanced Energy has announced the NCF150 series of high-isolation, low-leakage current AC-DC power supplies that enable medical equipment designers to meet the cardiac floating (CF) requirements of the IEC 60601-1 medical safety standard using off-the-shelf products. Type CF is the most stringent medical electrical safety classification and is essential for medical products that may come […]
FAQ on voltage and current sources: part 2
Voltage and the lesser-known current sources provide important IC, circuit, and system functions. Current sources We have examined voltage sources, and now we can examine their less-known but necessary complement, the current source. Q: What is a current source? A: As the name implies, the current source is like a voltage source but different. It […]
FAQ on voltage and current sources: part 1
Voltage and the lesser-known current sources provide critical IC, circuit, and system functions. Voltage sources and their complement to current sources are essential elements of many systems, circuits, and IC designs. Experimenters and novice engineers are familiar with voltage sources of various types — even if not by that name — in the form of […]
AC-DC power supplies deliver 3 V to 48 V over wide input voltage range
XP Power introduces the EHL series of PCB mount AC-DC power supplies that deliver single output voltages ranging from 3.3VDC to 48VDC. Available in both open-frame and encapsulated mechanical formats, the EHL05 (5W) and EHL20 (20W) high-power density power supplies feature an ultra-wide input range of 85VAC to 528VAC for global compatibility and high stability during fluctuating power conditions. […]
Regenerative power source and simulator line targets electrification testing
Pacific Power Source announces its regenerative product line to support the growing demand for electrification. The line includes the All-in-1 AGX Regenerative AC/DC Source, 2-in-1 RGS Regenerative Grid Simulator, and RLS Regenerative Load Simulator. These bidirectional sources and loads emulate real-world power flows, making them suitable for testing utility grids, EV chargers, Vehicle-to-Grid (V2G), Vehicle-to-Home […]
Versatile, ac-dc power supply for medical and industrial use
TDK Corporation announces the introduction of the TDK-Lambda brand CUS800M and CUS1000M AC-DC power supply series in a 6.73 x 3.35 x 1.67” (171 x 85 x 42.5mm) case size. Rated at up to 800W and 1000W, these very compact products also feature a variable speed fan with typically 30 – 42dBA audible noise. The […]
GaN gate driver optimizes e-mode GaN HEMT performance
Innoscience Technology announced the INS1001DE which is designed to drive single-channel GaN HEMTs in either low-side, high-side, or secondary-side SR applications. The new gate driver has dual non-inverting and inverting PWM inputs, enabling flexible operation with the controller, optocoupler, and digital isolator. Independent Pull-up and Pull-down outputs facilitate the control of turn-on and turn-off speeds. Driver […]
