Quick charger circuit
By introducing ESD protection circuit into the output module of the fast charger circuit, the problem that fast charger circuits in the prior art is difficult to protect ESD, and effective protection of the fast charge protocol chip and service life extension are achieved.
CN222654841UActive Publication Date: 2025-03-21XIAMEN TAIHE ELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202420597120.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-03-26
AI Technical Summary
Technical Problem
In the process of fast charging, it is difficult to perform ESD protection in the existing fast charger circuit, which affects the normal use and service life of the fast charging protocol chip.
Method used
A fast charger circuit is designed to connect certain pins of the USB-C interface to the corresponding pins of the fast charging protocol chip by introducing an ESD protection circuit into the output module, and achieve ESD protection of the fast charging protocol chip through a circuit composed of voltage-regulating diodes and resistors.
Benefits of technology
It effectively protects the fast charging protocol chip, extends its service life, and avoids the damage to the chip by ESD.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a rapid charger circuit. An output module comprises a PD switching circuit, an ESD protection circuit and a USB-C interface J1. A pin B5, a pin A7, a pin A6 and a pin A5 of the USB-C interface J1 are respectively and correspondingly connected with a pin CC2, a pin DM, a pin DP and a pin CC1 of the quick charge protocol chip IC301 through the ESD protection circuit, and a pin A1 of the USB-C interface J1 is connected with a grounding end IS; a VIN pin and a GND pin of the fast charge protocol chip IC301 are respectively connected with the output end of the AC / DC power conversion module and a grounding end SGND, and the grounding end SGND is connected with a grounding end IS pin through a resistor R204; a VCC pin, an SDA pin and an SCK pin of the fast charge protocol chip IC301 are respectively connected with a uVCC pin, an SDA pin and an SDL pin of a power management chip IC101 of the AC / DC power conversion module; the fast charging protocol chip IC301 is protected, and the service life of the fast charging protocol chip IC301 is prolonged.
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