Explain About 5G Charger IC (MT6360up) /MTK Charging IC की पूरी डिटेल वीडियो
Introduction to New Training Batches
Upcoming Training Sessions
- The speaker welcomes viewers and announces the start of a new offline training batch for "A" on March 25, and another for "I" starting April 7. Interested individuals can book seats by calling the provided number.
Understanding AT6360 IC
Overview of AT6360
- The topic shifts to the AT6360 IC, commonly known as a charging IC, which has been experiencing numerous faults. The speaker emphasizes its importance in mobile phone repairs.
Importance of Studying the IC
- Understanding this IC is crucial due to various issues it can cause, such as phone restarts, fingerprint problems, dead sets, and charging issues including fast charging failures.
Components and Functionality of AT6360
Key Features
- The AT6360 is found in many 5G phones and includes multiple sections beyond just charging functionalities. It is essential to understand these components for effective diagnosis.
Internal Sections
- This IC contains at least seven sections: smart power management, charging circuit, PD controller (for fast charging), LED control for camera flashlights, RGB LED driver for color control, and buck converters that manage voltage distribution.
Power Management Capabilities
Smart Power Management
- The smart power management section allows the device to handle various power needs effectively. A malfunction here could lead to significant issues like device shutdown or rebooting.
Fast Charging Support
- The inclusion of a PD controller enables support for modern fast-charging technologies that enhance user experience by reducing charge times significantly.
Diagnosis and Repair Considerations
Diagnostic Importance
- When diagnosing any 5G phone with an AT6360 chip, it's critical to assess this component thoroughly since its failure can lead to complete device failure or other operational problems.
Circuit Analysis
Understanding Voltage Requirements in Mobile Phone Repair
Importance of Voltage in RAM and Network IC
- The voltage of 1.2 volts is crucial for the RAM to function properly; if this voltage line is shorted or fails, the RAM will not activate, potentially causing phone malfunctions.
- For network-related issues, a voltage of 1.3 volts generated by coils is necessary for the MT6190 network IC used in many MediaTek phones; failure to produce this voltage can lead to connectivity problems.
LDO Voltages and Their Functions
- Six essential voltages are produced by LDOs (Low Dropout Regulators); the first being 1.8 volts for fingerprint sensors, which can cause reboots if shorted.
- The second voltage at 1.8 volts supports touch panels operating on I2C and API protocols; a drop here may result in touch functionality failures.
Offline Voltages and Their Activation
- The third voltage of 2.8 volts activates when an SD card is detected, while the fourth ranges from 2.8 to 3.0 volts for CPU operations; these are termed offline voltages as they only generate under specific conditions.
- The fifth voltage relates to CPU requirements (EVDD), while the sixth (VDDK) specifically powers RAM with two required voltages: one at 1.8 volts and another at 0.6 volts.
Consequences of Voltage Drops
- If any critical voltages drop, such as those needed for RAM or SD cards, it could lead to device reboots or complete shutdown scenarios.
- Understanding that all these voltages stem from a single charging IC emphasizes its importance in mobile repair processes.
Summary of Key Voltages Generated by Charging IC
- A recap indicates that six key voltages are generated:
- Fingerprint sensor: 1.8V
- Touch panel: 1.8V
- SD card: 2.8V
- CPU feedback: up to 3.0V
- RAM power: VDDI (for CPU), VDDK (for RAM).