ICs improve charging performance of smart devices

26 January 2016

Power Integrations’ InnoSwitch-CP family of off-line CV/CC flyback switching ICs incorporate a constant power output profile. 

When the device is paired with an adaptive-voltage protocol such as Qualcomm Quick Charge 3.0 or USB-PD, it permits smart mobile device makers to optimise charging time across a range of products. Developers employing adaptive charging technology achieve dramatically faster charge times, improved charging efficiency and backward compatibility with the popular 5V USB BC 1.2 specification, all while minimising overall thermal management and battery charging system cost.

InnoSwitch-CP ICs use Power Integrations’ FluxLink technology which enables high-performance secondary-side control to be implemented with the simplicity and low component count usually associated with primary-side regulation. FluxLink technology also optimises the effectiveness of output synchronous rectification, resulting in extremely high efficiency across the full load range. For example, no-load consumption at 230 VAC is less than 10mW, while full-load efficiency exceeds 90%. InnoSwitch-CP devices easily meet all global energy efficiency regulations. 

InnoSwitch-CP ICs incorporate a comprehensive suite of advanced protection features including: OVP; output OCP with 3V auto restart; hysteretic thermal shutdown and line input overvoltage protection with accurate brown-in/brown-out thresholds. Devices are fully compliant with safety and regulatory standards, including: 100% production HIPOT compliance testing equivalent to 6 kV DC/1 sec; reinforced insulation; and isolation voltage testing to above 3,500 VAC. They are UL1577 and TUV (EN60950) safety approved and EN61000-4-8 (100 A/m) and EN61000-4-9 (1000 A/m) compliant.

Two devices are available. The INN2214K IC delivers 15W output power for universal voltage chargers and adapters, while the larger INN2215K part delivers up to 22W for similar applications. 


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