Latest Electronic Power Supplies News

Prepare for IEC 62368 with X capacitor safety discharger

With IEC 62368 replacing earlier safety standards for TVs and IT equipment, Power Integrations is certifying its X capacitor discharge ICs to the new standard. X capacitors control conducted emissions from equipment, and are connected straight across the incoming mains – meaning that residual charge in them could cause electric shock…

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LED flash driver for phones and tablets

Aiming at LED camera flashes, Micrel has introduced a 1.2A boost converter and LED driver. Consistent with use in phones and tablets, it comes in a 1.3×1.3mm 9pin chip-scale package and runs at 4MHz so inductors can be small – total driver area can be as small…

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Driver IC for big LED light arrays

A programmable multi-output LED driver from Allegro Microsystems integrates a current-mode boost converter with internal power switch and eight current sinks. The IC operates from 4.5 to 36V, and is able to withstand up to 40V load-dump conditions encountered in automotive systems. The I2C interface allows…

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Power supply makes 6-1/2 digit precision measurements

Keithley Instruments has introduced a range of programmable DC power supplies which are designed to have a precision measurement capability. This is typically used to measure standby current loads and load current pulses that battery-powered wireless, medical, and industrial devices produce. The supplies can make voltage and current readback…

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DC-DC converter in a BGA has 2kV isolation

Linear Technology has introduced a 2.5W output DC/DC converter with 2kVAC galvanic isolation in a 9x15x4.92mm ball grid array (BGA) package. The isolated transformer, control circuitry, power switches, and a modest amount of input and output capacitance are encased in the BGA package. A minimum creepage distance…

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300kW SiC half-bridge offers 99% efficiency

Silicon carbide is a route 99% efficiency in induction heating drivers, claimed Cree as it introduced a 300A, 1.2kV half-bridge module. Bolting straight into a industry-standard 62mm footprint, it includes two 5mΩ SiC mosfets and two SiC free-wheeling Schottky diodes, that drop 1.7V at 300A…

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Supercapacitor balancing kit

Kemet has introduced a supercapacitor balancing development kit for its S301 family of 60mm diameter capacitors. Used in series, supercapacitors need electronics to ensure no capacitor goes over the rated voltage as the string approaches full charge – 2.7V in this case, see below. The kit includes two-stage active…

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Digitally controlled converter drives 60A

TDK-Lambda has introduced an non-isolated surface mount DC-DC converter which will handle 60A currents. The iJB series converters are PMBus read and write compliant and digitally controlled. The input voltage range is 8-14Vdc and the output is adjustable from 0.6 to 2.0V with a…

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