Improved surge protection for mobile/automotive device chargers
The six transient voltage suppressor (TVS) diodes are housed in the small, leadless plastic package DFN2020-3 (2 x 2 mm) with a height of only 0.62 mm. The PTVSxU1UPA product series offers a 300W peak pulse power rating (10/1000 µsec) and reverse stand-off voltages from 7.5 to 26V. These new AEC-Q101 qualified diodes are suited to protect voltage-sensitive components against transient voltage in various applications, such as the charger port in mobile devices.
Surge pulses from the power supply, for example via a car charger, are – NXP asserts – a severe threat for the charger port VBUS line of smart phones and other portables. Standard ESD protection devices are no longer sufficient to protect application circuits from damage, and as a result, devices with higher surge robustness are required. Low leakage current of only 1 nA reduces the power consumption.
This discrete solution, NXP adds, offers superior electrical performance, a higher PCB design flexibility and easier routing than the array of integrated solutions currently available.
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