Power Electronic Tips

Lithium-ion capacitors operable from -25°C to 85°C

Redding Traiger — Fri, 27 Sep 2024 17:47:27 +0000

Tecate Group has introduced new additions to its lithium-ion capacitor (LIC) product offerings. The new TPLCE product series features increased volumetric energy densities compared to the current TPLC series. TPLCE cells are rated at 3.8V and are available in capacitances from 3F to 1,400F. The cells are UL recognized, RoHS and REACH compliant, and operate from -25°C to +70°C at 3.8V, with operation up to 85°C when at 3.5V. At cold temperatures down to -25°C, the TPLCE series experiences a twofold increase in ESR.

LICs are designed for backup-power and pulse-power applications requiring maintenance-free, long-life, and safe-operation power sources. The TPLCE series is suitable for systems with space constraints. Compared to ultracapacitors, LICs have higher energy density and lower self-discharge. In relation to lithium-ion batteries, LICs offer higher power capability, longer life, and reduced thermal concerns during operation.

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90kW GSPS cabinets enhance power supply line

Redding Traiger — Wed, 10 Jul 2024 19:39:52 +0000

TDK Corporation announces the introduction of 90kW rated GSPS 20U 19-inch racking cabinets to the TDK-Lambda GENESYS+ series of programmable DC power supplies. The GSPS systems seamlessly transition across constant voltage, constant current and constant power limit operating modes. The cabinets are mounted on lockable castors (wheels) to enable them to be easily repositioned around research or production facilities.

The GSPS series meets the demands of testing and measurement of automotive components, batteries for electric vehicles, aerospace, high-power magnets, medical imaging, semiconductor processing, and industrial automation and process control applications.

Internally, twelve of the GENESYS+ 7.5kW power supplies are configured together to provide twelve output voltage ranges from 0 – 20V to 0 – 1500V with output currents of up to 4500A. TDK-Lambda’s patented advanced parallel system provides dynamic load response and ripple and noise characteristics comparable with that of a single power supply.

The input voltage range is three-phase 342 to 528Vac 47 – 63Hz, covering nominal 380, 400, 415, 440, 460 and 480Vac. The input circuit breakers are accessible on the front panel of the cabinet, and the paralleled output bus bar connections are at the rear. Safety features are standard in all GENESYS+ power supplies, providing Safe/Auto Re-Start, Last Setting Memory and built-in protection functions for voltage, current and temperature.

The GSPS series uses common programming across the entire GENESYS+ series, either by the front panel controls, remotely via LAN (LXI 1.5), USB 2.0 and RS232/485 communications or an isolated analogue control and monitoring interface (0-5V, 0-10V), which are provided as standard. Optional interfaces include a choice of GPIB (IEEE488.2), EtherCAT, Modbus-TCP and IS420 (4 to 20mA isolated current programming loop). The software package provides software drivers, a waveform creator, and a virtual front panel GUI.

The GSPS 20U 19-inch racking cabinet measures 553 x 902 x 1028mm (WxDxH) and weighs less than 200kg. The castors can be removed if not needed.

The five-year warranty series is safety certified to IEC/EN/UL 61010-1 and has CE and UKCA markings for the Low Voltage, EMC, and RoHS Directives. The GENESYS+ series also complies with IEC/EN 61204-3 for conducted and radiated EMI and EMC immunity.

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Military-grade transistors meet rigorous standards for radiation exposure

Redding Traiger — Thu, 20 Jun 2024 18:30:04 +0000

Microchip Technology has announced that its portfolio of JAN transistors is now tested and qualified to Military-Standard Enhanced Low Dose Radiation Sensitivity (ELDRS) requirements, including MIL-STD-750, Test Method 1019, and specifications such as MIL-PRF-19500/255, /291, /355, /376, and /391.

These military-grade transistors are designed to withstand varying levels of radiation exposure and are part of the Joint Army Navy (JAN) designation system for specifying components procured for military applications. These designations ensure that electronic components used in critical military and aerospace applications can function reliably in radiation-rich environments.

Microchip offers several JAN transistor designations: JANSE Transistors (30 Krad): Withstand up to 30 Krad per unit of absorbed radiation dose; JANSK Transistors (50 Krad): Withstand up to 50 Krad; JANSU Transistors (100 Krad): Endure up to 100 Krad;

The new families of JAN transistors are supported by comprehensive analysis, test reports, and detailed data sheets. The JANSE (30 Krad), JANSK (50 Krad), and JANSU (100 Krad) transistors are now available.

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