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High-Integration Fast Charge Protocols Controller with Internal Feedback Compensation

RT7203T

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The RT7203T is a programmable controller with integration of super charge protocols, and the built-in feedback compensation. An internal MCU is designed in to handle various proprietary protocols via the D+/D- interface.

This controller is a specific design with high integration for off-line AC-DC converters possessing high power density. The RT7203T integrates a constant voltage loop, a constant current loop and the built-in compensation in feedback control to better regulate the design, this IC not only possesses a feature of component saving via its feedback compensation, but also provides an enhanced transient response and safety protections via the integration of diverse functions.

In applications of high precision control, dual operational amplifiers are adopted in the Digital-to-Analog Converter (DAC) to provide reference voltages used for regulation of voltage loop and current loop in programming the constant voltage (CV) and the constant current (CC), respectively.

Applications

  • Travel Adapters with Fast Charge Protocols
Key Spec.
RT7203T
Status Active
Policy Manager Integrated
Alternate Mode Yes
MCU Integrated Yes
Power Role Provider
Realtime VBUS Monitoring Yes
Max Output Voltage (V) 13
Syn. Rectifier No
Features Constant-Current Regulation;Internal Compensation;OVP;SCP;UVP;VBUS OVP;VBUS UVP
Package Type SOP-8
Features
  • Protocol Support
    ► Proprietary Protocols
  • Highly Integrated
    ► Suited for 3.3V to 13V VDD Range
    ► Embedded MCU with an Mask ROM of 20kB, an OTP-ROM of 4kB, and an SRAM of 0.75kB
    ► Built-in Shunt Regulators for Constant Voltage and Constant Current Control
    ► Built-in Feedback Compensation
    ► Built-in Temperature Sensing
    ► Built-in 10-bit Analog-to-Digital Converter
    ► VDD Pin for Quick Discharge of Output Capacitor
    ► < 3mA Operating Current in Normal Mode
    ► < 1.5mA Operating Current in Sleep Mode
    ► < 900μA Operating Current in Green Mode
  • Protection
    ► Adaptive Output Over-Voltage Protection
    ► Adaptive Under-Voltage Protection
    ► D+/D- Over-Voltage Protection
    ► Firmware-Programmable Contant Current Protection
    ► Firmware-Programmable Over-Current Protection
    ► Firmware-Programmable Over-Temperature Protection
Datasheet
TitleLast UpdateShareDownload
High-Integration Fast Charge Protocols Controller with Internal Feedback Compensation2019/09/17
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