Ultrasonic sensing is used in various automotive and industrial applications ranging from liquid level sensing to robot obstacle detection and automated parking assistance. Transformer-based designs can produce highly accurate solutions with maximum ranging distances. This FAQ will review several applications for ultrasonic sensing, compare the capabilities of transformer drive with direct drive solutions, and then […]
Transformers
Gate drive transformer specifications and applications
Gate drive transformers are often a good solution for providing galvanic isolation in high-voltage and high-frequency applications where fast and accurate signal timing is critical. A gate drive transformer is optimized to handle fast-rising and fast-falling rectangular pulses to turn power switches “on” and “off” in switching power converters. Although many gate drive transformers have […]
Push-pull transformers include 2,500 Vac isolation
Würth Elektronik is pleased to announce the expansion of their popular MID-PPTI tiny push-pull transformer series. This series of parts can be used in a host of push-pull and pulse transformer applications and is found on dozens of reference designs. The four parts added to the MID-PPTI series include 750317828, 750317829, 750317830, and 750317331; all […]
PoE++ transformers can provide up to 95 W
Würth Elektronik expands its MID-POE Power over Ethernet transformer series to include PoE++. These SMT transformers are suitable for Flyback or Active Clamp Forward power supplies that comply with the IEEE 802.3bt (four-pair power over Ethernet, 4PPoE, also known as PoE++) standard. The ten new transformers can provide an output power of up to 95 […]
Compact transformers for DC/DC converters
TDK Corporation presents the EPCOS E10 EM series, a new range of insulated SMT transformers that are suitable for various DC/DC converter topologies and gate driver circuits in e-mobility and industrial electronics. There are four models in the series, with basic winding insulation of a working voltage of 500 VRMS and reinforced insulation of 300 […]
SMD transformers optimized for SiC MOSFET gate drivers
The WE-AGDT series makes a new SMT assembly transformer available, which, at the same time, is part of a power supply solution developed by Würth Elektronik for demanding gate control of SiC MOSFETs. The innovative WE-AGDT is a compact transformer in an EP7 package. It features a wide input voltage range from 9 to 36 […]
Surface mount transformers for Power-Over-Ethernet applications
Signal Transformer announces the latest product innovation for Power Over Ethernet (PoE) applications, the SPoE Surface Mount Transformer Series. SPoE is a new product for equipment or devices connecting to an Ethernet or enterprise network and relies on ethernet cables to receive power and digital data signals for operation and processing, respectively. Today’s IoT (Internet of […]
Super-small current transformers boast 750 Vac insulation voltage
Würth Elektronik expands the product family of WE-CST current sense transformers with the new WE-CST EE4.4 series. An innovative manufacturing process not only makes these current sense transformers extremely small (4.7 x 4.65, 3.55 mm), but also provides better insulation. Their insulation voltage of 750 VAC, is 50 percent higher than that of market competitors. […]
RF transformer fabrication – making the best of a non-ideal situation: part 2
As discussed in part 1 of this series, physical RF transformers are non-ideal devices. They include parasitic resistances, inductances, and capacitances, which are nonlinear and complex effects that compromise performance. Several fabrication methods have been developed to mitigate the impact of these parasitics and help optimize RF transformer characteristics for specific applications. Core-and-wire transformers Core-and-wire […]
Dealing with non-ideal transformers — basic RF transformer theory of operation
When current passes through the primary winding of a theoretical (ideal) transformer, it generates a magnetic field, which induces a voltage across the secondary winding. Connecting a load to the secondary causes an AC current to flow through the load. However, a physical transformer is far from ideal and includes parasitic resistances, inductances, and capacitances, […]
