CHY103D

CHY103 is a USB interface IC that supports Class A and Class B of the Quick Charge 3.0 specification. It includes features that protect the power supply and its connected Powered Device (PD) from excessive output voltages, secondary-side thermal overload, and faulty power delivery while adapter is unplugged.

The CHY103 interface IC automatically detects whether a connected PD is Quick Charge 3.0 or Quick Charge 2.0 capable before enabling output voltage adjustment. If a PD that is not compliant to Quick Charge 2.0 or 3.0 is detected, the CHY103 disables output voltage adjustment to ensure safe operation with legacy 5 V-only USB PDs.

Product Highlights

• Supports Quick Charge 3.0 specification
  • Class A: 3.6 V to 12 V output voltage
  • Class B: 3.6 V to 20 V output voltage

• Adaptive output overvoltage protection (AOVP)
  • Protects output from exceeding 120% of set output voltage

• Secondary over-temperature protection (SOTP)
  • NTC resistor can be freely positioned inside enclosure

• Output soft short-circuit protection (OSSP)
  • Protects output from delivering power while unplugged
  • Monitoring initiated automatically or remotely through PD

• Remote shutdown protection (RESP)
  • Enables Powered Device to shutdown adapter

• Very low power consumption
  • Below 1 mW at 5 V output

• Fail safe operation
  • Adjacent pin-to-pin short-circuit fault
  • Open-circuit pin fault

• Supports InnoSwitch, TinySwitch, and TOPSwitch