Shenzhen CXW Technology., Co Ltd
15 years of experience
Summary:
CX2965C is a multi-protocol port controller that integrates USB Type-C, USB Power Delivery (PD) 2.0/3.0, PPS QC3.0/2.0Class A fast charging protocol, Huawei FCP/SCP fast charging protocol, Samsung AFC fast charging protocol, BC1.2 DCP, and Apple device 2.4A charging protocol.
CX2965C supports LINKTM multi chip interconnection patented technology and can communicate between chips through bus interconnection. By using this unique interconnection technology, it can be flexibly applied to multiple USB charging port devices, providing a simple and cost-effective solution for multi-port charging devices.
The built-in TYPE-C protocol of CX2965C can support TYPE-C devices to be inserted into the automatic wake-up system, intelligently recognize the forward and reverse insertion of plugs, and achieve connection. The integrated TYPE-C PD3.0 protocol supports Bidirectional Markup Coding (BMC), integrates hardware's physical layer protocol and protocol engine, and does not require software to participate in encoding and decoding.
CX2965C supports a maximum output power of 65W, and the broadcast PDO voltage can be configured as 5V/9V/12V/15V/20V. The APDO voltage can be selected from two levels of 5V Prog/9V Prog/15V Prog/20V Prog, and the APDO voltage range can be flexibly configured.
CX2965C achieves dynamic voltage regulation through a Sink/Source current source connected to the feedback pins of AC-DC or DC-DC. It has a soft start function during both startup and voltage regulation processes, achieving smooth voltage transition.
CX2965C has multiple built-in protection mechanisms to ensure equipment safety, including dynamic overvoltage/undervoltage/overcurrent protection (the protection point can be adjusted proportionally based on the operating voltage/current requested by the equipment); Start monitoring (before VBUS output, it will monitor whether the port voltage is in a safe state); DP/DM and CC1/CC2 overvoltage protection.
CX2965C integrates a 10m Ω VBUS channel power switch and a dual discharge channel, and integrates a constant voltage control loop. It is also possible to quickly shut down the output and restore to a safe state when an error occurs.
CX2965C adopts ESOP8 packaging form, and the periphery can work without additional components providing optimal BOM cost characteristics, and can easily pass USB PD certification testing.
CX7538BS is a high-performance secondary side synchronous rectification control circuit for switch-mode power <br/><br/>supplies. It easily meets the Level VI energy efficiency requirements in low-voltage, high-current switch-mode power <br/><br/>supply applications, making it an ideal solution for ultra-low forward voltage drop rectification devices. It also supports <br/><br/>various operating modes of switch-mode power supplies, such as CCM, QR , and DCM . Its extremely low forward <br/><br/>voltage drop results in much less conduction loss compared to Schottky diodes, greatly improving the system&#039;s <br/><br/>conversion efficiency and significantly reducing the temperature of the rectification device.<br/><br/><br/><br/>The CX7538BS chip features an NMOSFET synchronous rectification switch with a built-in voltage tolerance of 60V <br/><br/>and an extremely low internal resistance, with a typical RdsON as low as 12mΩ, providing the system with an output <br/><br/>capability up to 4A. The chip determines its switching state by detecting the source-drain voltage of the built-in <br/><br/>MOSFET, making it compatible with flyback converters in continuous mode, discontinuous mode, and quasi-resonant <br/><br/>operation modes.
Overview
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OverviewCX8831CA is a synchronous step‑down converter integrating multiple fast‑charging protocols. It supports USB Type‑C, PD3.2 and PPS protocols, Qualcomm QC2.0/3.0/3.0+, Huawei FCP/SCP/HVSCP, VOOC, MediaTek PE2.0, Samsung AFC, USB BC1.2 DCP, and Apple...
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