LONDON — Dialog Semiconductor plc has unveiled the company's high-efficiency AC/DC adapter interface IC for Qualcomm Quick Charge 2.0 power supplies.
The new iW620 rapid charge interface IC resides on the secondary side of the AC/DC charger power supply and works with Dialogís iW1760 PrimAccurate primary-side digital pulse width modulation (PWM) controller. Efficiency as high as 88 percent enables the higher power density needed for smaller form-factor fast charging adapters, said Dialog Semiconductor in a press release. Quick Charge 2.0 is a proprietary protocol from Qualcomm Technlogies, Inc., a wholly owned subsidiary of Qualcomm Incorporated (NASDAQ: QCOM), for charging smartphones, tablets, and other mobile devices up to 75 percent faster than conventional USB charging technology.
Dialog differentiates its Quick Charge 2.0 rapid charge AC/DC adapter solution from the competition claiming that it delivers "high efficiency up to 83 percent without the need for a synchronous rectifier as required by competing solutions," according to the press release. "For the ultimate in high power density and small form factor, Dialogís Quick Charge 2.0 rapid charge solution can be used with a synchronous rectifier to provide even higher efficiency up to 88 percent."
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— Paul Buckly writes for EE Times Europe. EE Times Europe