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RT7208EB Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT7208EB Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 51 page  RT7208EB Copyright © 2021 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS7208EB-00 August 2021 www.richtek.com 1 High-Integration USB PD Controller with Internal Feedback Compensation and Synchronous Rectification for ZVS Control General Description The RT7208EB is a programmable USB PD controller with built-in functions of synchronous rectification, bi- direction control and internal feedback compensation. The controller MCU handles various proprietary protocols via the D+/D- interface and supports USB PD Type-C via the CC1/CC2 pins. The RT7208EB provides the highly integrated solution for the off-line high power density AC-DC converter by utilizing the zero-voltage switching (ZVS) on main switch. This is accomplished by built-in compensation for feedback control to regulate output voltage and current. In order to reduce usage of external components, the controller is built-in with a synchronous rectification controller, and integrated with diverse functions and protections. These features improve the efficiency as well as the safety of a power converter. In the IC, an internal synchronous rectifier controller can optimize efficiency and provide safe operation in both continuous-conduction mode (CCM) and discontinuous -conduction mode (DCM) under a wide output voltage range of 3.0V to 22V. Moreover, a dual operational amplifier with the digital- to-analog converter (DAC) is embedded for voltage- loop and current-loop regulation when programming the constant-voltage (CV) and constant-current (CC) regulation in high precision. Applications USB PD Type-C or Proprietary Protocols (e.g., FCP, SCP and AFC) Chargers/Adapters for Smart Phones, NBs, Tablets and All Other Electronics USB PD Extension Cores with Offline AC-DC Converters Features Protocol Support USB PD2.0/PD3.0 and PPS Proprietary Protocols Highly Integrated Embedded MCU with an Mask ROM of 32KB, an OTP-ROM of 16KB, and an SRAM of 3KB Built-in Synchronous Rectifier Controller and Driver Built-in Charge Pump for a Wide VDD Operation Range of 3V to 22V Built-in Bi-direction Function for Programmable Constant-Voltage and Constant-Current Control Built-in Internal Feedback Compensation Built-in Dual Shunt Regulators with Respectively 11-bit and 10-bit DAC Programmable Reference Voltages for CV and CC Control Built-in 10-bit Analog-to-Digital Converter (ADC) Programmable Linear Cable Compensation BLD Pin for Quick Discharge of Output Capacitor VBUS Pin for Detection VBUS Voltage and Quick Discharge of VBUS Capacitor USBP Pin for Direct Drive of External Blocking N-MOSFET Power-Saving Mode in Standby Mode Protection Adaptive Output Over-Voltage Protection Adaptive Under-Voltage Protection CC1/CC2/D+/D- Over-Voltage Protection Firmware-Programmable Constant-Current Protection Firmware-Programmable Over-Current Protection Firmware-Programmable Over-Temperature Protection |
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