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The RTQ7892B-QT is a USB Type-C Power Delivery (USBC PD) and PWM buck-boost converter with integrated low-side MOSFETs, offering highly integrated functions and flexibility for USB PD provider applications. The IC features an embedded ARM Cortex-M0 MCU, which handles various functions such as communication protocol, smart control of the PWM converter, firmware-based protections, and customized functions. The IC also features hardware-based protections, such as inductor peak current limit, VBUS overvoltage protection (VBUS OVP), VIN undervoltage protection (VIN UVP), VIN overvoltage protection (VIN OVP), VO undervoltage protection (VO UVP), and VCONN overcurrent protection, so that the protections have faster responses and can still function even when the MCU is not activated. The RTQ7892B-QT provides an excellent USB PD solution for USB-PD provider applications with minimal external components and a simple PCB layout.The RTQ7892B-QT is available in a WQFN7x7-62 package. The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 125°C.

應用

  • Automotive USB Type-C Power Delivery Chargers
主要規格
RTQ7892-QT
Status Active
Policy Manager Integrated
Alternate Mode Yes
PD Version PD2.0;PD3.1;PD3.2;PPS
MCU Integrated Yes
Power Role Provider
Data Role Dual Role
External Power Path Control N-MOSFET Driver
Internal Power Path VCONN 5V 20mA
Iq (Typ) (μA) 120
Realtime VBUS Monitoring Yes
Dead Battery Support No
PWM Controller Buck Boost
Max Output Voltage (V) 22
Syn. Rectifier Yes
CC Pins 2
VBUS Discharge By BLD;By VBUS
Features AEC-Q100;Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Constant-Current Regulation;Controller for DCDC Power;Current Mode Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;External Synchronization;I2C;Internal Compensation;OCP;OVP;SCP;UVP;VBUS OVP
Package Type WQFN7x7-62
Outline Dimension, Footprint, Drawing Download
關鍵特性
  • AEC-Q100 Grade 1 Qualified
  • Protocol Support
    - USB PD3.2 SPR, PPS, and AVS (TID 14462)
    - UFCS
  • Operating Ambient Temperature: -40°C to 125°C
  • Type-C, USB PD and Communication Protocols
    - Compliant with USB PD 3.2 Specification, USB Type-C Cable and Connector Specification 2.4
    - VCONN Output 100mW
    - Support Alternate Mode
    - Support Other Proprietary Communication Protocols through Internal MCU, DP, and DM Pins
  • Integrated PWM Buck-Boost Converter
    - Wide Input Voltage Range: 4.5V to 30V
    - Wide Output Voltage Range: 3.3V to 21V
    - Peak-Current Mode PWM Operation
    - Internal Compensation for Constant Voltage (CV) and Constant Current (CC)
    - Programmable PWM Switching Frequency (200kHz to 600kHz)
    - Pulse-Skipping Mode for Light-Load Efficiency; Selectable Forced CCM Operation
    - Integrated Internal 2 Low-Side N-channel MOSFETs
  • AnyPower for Constant Voltage Output and Constant Current Outputr
  • PD Safe
    - Adjustable Converter Input Overcurrent Protection (INOC)
    - Fast Response VIN OVP/UVP Detection
    - Programmable VBUS OVP and VO UVP
    - Fast Response OVP for CC1/2 and D+/D- Pins
    - Adjustable External OTP/Internal OTP
    - CC1/2 Output Current Limit
    - CC1/2, D+/D- 25V Tolerant
  • Cable Voltage Drop Compensation for VBUS
  • Switching Frequency Synchronization for Better EMI
  • Adjustable Gate Drive Current for Better EMI
  • Firmware-Based Functions
    - VIN De-Rating and Power Sharing
  • Master and Slave I2C Interfaces, LED Control, GPIOs
  • EN Control for Power Saving
  • Built-In Output Bleeders for Quick VBUS Discharge
  • Built-In Charge Pump for Driving Cost-Effective N-MOSFETs
  • Built-In Internal LDO
  • Online Firmware Update via Slave I2C Interface
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