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Diodes Incorporated AP43671 USB Type-C™ Power Delivery (PD) Controller is highly integrated and intelligent with an embedded Synchronous Rectification (SR) controller. This USB controller supports Programmable Power Supply (PPS) and Qualcomm QC4/QC4+ protocols. The AP43671 controller can accommodate popular quick charging protocols for firmware stored in One-Time-Programmable (OTP) memory by leveraging its embedded MCU and supporting circuitry. This USB controller enables optimal system BOM and performance implementation of quick chargers. The AP43671 controller features MCU-based implementation for protocol decoding, application firmware, parameter fine-tuning, and calibration. This USB controller operates at -40°C to +150°C operating temperature range, 3V to 21V supply voltage range, and 3.3mA operating supply current. The AP43671 controller is ideally used in wall and travel chargers for AC/DC adaptors (Type-C equipped notebook PCs).
The AP43671 IC adopts a relatively small current-sensing resistor (5mΩ) that is used to provide accurate current measurements without sacrificing power consumption. This USB interface IC embeds a multiple-mode adaptive SR controller where its key performance and safety parameters can be fine-tuned by a built-in MCU. The AP43671 IC provides robust protection schemes, which include a CC1/CC2 short protection against VBUS (up to 24V) as well as built-in OVP/OCP/SCP/OTP features to provide necessary safety protection.
