Charger interface IC is compatible with Qualcomm's Quick Charge 3.0

Used alongside Power Integrations’ InnoSwitch AC/DC switcher ICs, the CHY103D device incorporates all of the functions needed to support QC 3.0 and enhances the efficiency of the charging process. The CHY103D is suitable for use in battery chargers for mobile devices such as tablets, smartphones, Bluetooth accessories and various USB power output ports. It is also compatible with Quick Charge 2.0 products.

The IC improves charging efficiency and reduces heat dissipation by enabling voltage changes in 200mV increments instead of the larger steps (e.g., from 5 to 9 or 12V) employed in many current rapid-charging designs. This technique allows the mobile device to optimise the supply voltage from the offline charger, minimising losses in the phone’s internal charge-management system.

CHY103D includes a wealth of protection features including adaptive output overvoltage protection, which prevents the output from exceeding 120% of the set output voltage, output soft short-circuit protection, which detects partial shorts and stops power delivery to prevent overheating of cable and connector, and a remote shutdown protection feature which enables the powered device to shut the adapter off remotely if a fault is detected.

The CHY103D device itself consumes less than 1mW at 5V output; in combination with highly efficient InnoSwitch devices, this low power consumption aids designers in complying with stringent efficiency requirements for chargers, such as the upcoming revision to U.S. federal standards for external power supplies.

Shyam Dujari, Director of Marketing, Power Integrations: “Fast charging of mobile devices requires more power than traditional charging, so the question of how to avoid overheating is a critical issue. CHY103D helps solve this challenge by improving charging efficiency. We are excited to be working alongside Qualcomm Technologies in their efforts to enhance the utility of mobile devices with Quick Charge 3.0 technology.”