PRODUCTS POWER ELECTRONICS NEW BONDING RIBBON FOR POWER MODULES
this bonding ribbon it is possible to optimise the use of new SiC chips. The benefits of using copper
A
new copper bonding ribbon from Heraeus Electronics
enables power modules to be designed and manufactured more reliably, efficiently and cost- effectively. The PowerCuSoft Ribbon is
enhanced for surface contacting on wide bandgap semiconductors based on silicon carbide (SiC). With
include better thermal, electrical and mechanical properties compared to aluminium wire and ribbons. The material heats up less than aluminium and can withstand higher module temperatures – this improves the lifespan and reliability of power modules. Resilient to heat, this ribbon can withstand module temperatures of up to 250°C. Tests have proven, copper ribbons show a ten to twenty times longer service life than comparable products made of aluminium, while at the same time increasing the energy density in the module. "SiC semiconductors are in the
fast lane due to their high power density," says Christian Kersting, product manager power bonding wires at Heraeus Electronics. "In order to be able to use the advantages of these products, module manufacturers need high- performance packaging and interconnection technologies.” Compared to copper wires,
ribbons also offer cost advantages, as one ribbon replaces several copper wires. Manufacturers are thus able to optimise the manufacturing costs per module as output increases. Depending on the module design, even twice the number of modules per hour can be produced.
www.heraeus.com
HIGH-VOLTAGE SWITCHER ICS CERTIFIED FOR AUTOMOTIVE USE
PROGRAMMABLE DC POWER SUPPLIES IN FULL OR HALF RACK SIZES
New 1U high programmable DC power supplies have been added to TDK-Lambda’s GENESYS series. The G1kW and GH1kW series offer up to 1,000W output power in a choice of full or half-rack package sizes. These devices are ideally suited for bench-top or rack-mount equipment in a wide variety of OEM, industrial and laboratory applications. Ten models are available rated at 0V to 10V, 20V, 30V, 40V,
60V, 80V, 100V, 150V, 300V and 600V, with output currents of 0-1.7A to 0-100A. All models transition seamlessly between constant voltage and constant current operation and also have
constant power limit mode. Multiple power supplies can be connected in parallel with an advanced patented master/slave system that provides dynamic load response and ripple and noise characteristics comparable with that of a single power supply. The input voltage range is 85 to 265Vac facilitating global use. The half-rack GH1kW measures 214mm wide and the full-rack G1kW 483mm. Using the GH/RM option kit,
two GH units can be mounted side by side in a standard 19” rack. The 1kW GENESYS+ units weigh less than 3.5kg (half-rack) and 5kg (full-rack) for easy movement or installation. Where user access is not required or needs to be restricted, a blank front panel option (with no metering or control functions) is available. Snap-on dust filters can also be added to restrict airborne contamination.
www.emea.lambda.tdk.com/genesysplus
Power Integrations’ AEC-Q100-qualified version of its LinkSwitch-TN2 switcher IC for buck or non-isolated flyback applications features an integrated 750V MOSFET. The new automotive-qualified LinkSwitch-TN2 IC supplies power for EV sub-systems connected to the high-voltage bus, including HVAC, climate control, battery management, battery heater, DC-DC converter and on-board charger systems. The surface-mount device requires no heatsink, needs few external components and occupies a very small PCB footprint. The 7W (flyback) / 360mA (buck)
LinkSwitch-TN2 has a wide input voltage range of 60VDC to 550DC, efficiently supporting the 400VDC bus commonly seen in electric vehicle applications. The new power supply IC provides accurate regulation of better than +/-5% across line voltage, load, temperature and component tolerances. Power Integrations’ product marketing
manager Edward Ong said: “Our automotive switcher ICs reduce size while increasing the reliability and robustness of automotive sub- systems. By supplying auxiliary systems directly from the high-voltage bus with a LinkSwitch- TN2 power supply, automotive engineers can reduce the requirement for the conventional 12V distributed rail, saving assembly and material cost.”
ac-dc.power.com
ELECTROLYTIC CAPACITORS FOR ENERGY-STORAGE IN DEFENCE, INDUSTRY AND RAIL SECTORS
Charcroft Electronics is sampling high energy-density aluminium electrolytic capacitors from Exxelia. Suitable for use in energy-storage applications in the defence, railway, industrial and power-supply sectors, samples of the FELSIC HC screw-terminal capacitors and SNAPSIC HC snap-in capacitors can now be requested. The high density achieved by these devices enables some 30 percent reduction in
function price and a reduction in board space, weight, and assembly time. Samples of the FELSIC HC capacitors are rated at 200V, 300V or 450V, and the SNAPSIC HC samples at 400V or 450V. Both series deliver low ESR and support an ultra-long lifetime of 8000 hours at 85°C with operation over a temperature range from -40°C to 85°C. The increase in energy density reduces board space by enabling six of these
capacitors to replace 12 standard capacitors in energy-storage applications. The full range of voltages is from 10V to 500V and capacitance values from 100µF to 2.7F. These capacitors simplify battery assembly and have the flexibility to meet custom
designs. The 2-pin capacitors provide a full voltage range from 25V to 500V and capacitance values from 33µF to 47,000µF across 24 case sizes.
www.charcroft.com
30 JULY/AUGUST 2020 | ELECTRONICS / ELECTRONICS
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