MAX20461

Automotive High-Current Step-Down Converter with USB-C Protection/Host Charger

Industry's First Automotive Single Chip USB Type-C Charge Enumerator with Buck Converter


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说明

The MAX20461 combines a 3A high-efficiency, automotive-grade, step-down converter, a USB Type-C/BC1.2 host charger-adapter emulator, and high-bandwidth USB protection switches for automotive USB 2.0 host applications. The device also includes a USB load current-sense amplifier and a configurable feedback-adjustment circuit that provides automatic USB voltage compensation for voltage drops in captive cables often found in automotive applications. The device limits the USB load current using both a fixed internal peak-current threshold and a user-configurable external current-sense USB load threshold.

The MAX20461 is optimized for high-frequency operation and includes programmable frequency selection from 310kHz to 2.2MHz, allowing optimization of efficiency, noise, and board space based on the application requirements. The fully synchronous DC-DC converter integrates high-side and low-side MOSFETs with an external SYNC input/output, and can be configured for spread-spectrum operation.

The MAX20461 allows flexible configuration and advanced diagnostic options for both stand-alone and supervised applications. The device can be programmed using either external programming resistors and/or internal I²C registers through the I²C bus.

The MAX20461 is available in a small, 5mm x 5mm 32-pin TQFN package. It is designed to minimize required external components and layout area.

关键特性

  • One-Chip Type-C Solution Directly from Car Battery to Portable Device
    • USB Type-C Compliant DFP Controller with VCONN Protection
    • 1GHz Bandwidth USB 2.0 Data Switches
    • 4.5V to 28V Input (40V Load Dump), Synchronous Buck Converter
    • 5V to 7V, 3A Output Capability
  • Optimal USB Charging and Communication for Portable Devices
    • User-Programmable Voltage Gain Adjusts Output for Up to 500mΩ Cable Resistance
    • User-Programmable USB Current Limit
    • Type-C Cable Orientation Indicator for USB3 Applications
    • Integrated Apple® and Samsung® Dedicated Charger Termination Resistors
    • Supports USB BC1.2 CDP and DCP Modes
    • Supports China YD/T 1591-2009
    • Compatible with USB On-the-Go Specification and Apple CarPlay®
  • Low-Noise Features Prevent Interference with AM Band and Portable Devices
    • Fixed-Frequency 275kHz to 2.2MHz Operation
    • Fixed-PWM Option at No Load
    • Spread Spectrum for EMI Reduction
    • SYNC Input/Output for Frequency Parking
  • Robust Design Keeps Vehicle System and Portable Device Safe in an Automotive Environment
    • Short-to-Battery Protection on VBUS, HVD± Pins
    • CC1 and CC2 Tolerant to 20V Transients
    • Advanced Diagnostics Through I²C Bus
    • ±25kV Air/±8kV Contact ISO 10605 (330pF, 2kΩ)*
    • ±15kV Air/±8kV Contact IEC 61000-4-2 (150pF, 330Ω)*
    • ±15kV Air/±8kV Contact (330pF, 330Ω)*
    • Overtemperature Protection, Warning, and Intelligent Current Foldback
    • -40°C to +125°C Operating Temperature Range

应用

  • 汽车连通性/远程信息处理
  • 车载无线电与导航
  • 专用USB充电端口(DCP)
  • 主机用USB接口
Part NumberSupported Charging ConfigurationsSupported USB Battery Charging SpecificationCharging ModesCDP EmulationRemote Wake-Up SupportVBUS Reset Time
(sec)
Package/Pins
typ
MAX20461 NEW!
Apple 0.5A
Apple 1.0A
Apple 2.1A
China YD/T 1591-2009
Samsung Galaxy Tablet 2A
USB CDP
USB Dedicated Charger
USB SDP
1.2
Auto Detection
Auto Detection with Apple 1A
Auto Detection with Apple 2A
CDP Emulation Pass-Through
Forced Dedicated Charger
Pass-Through
Samsung Galaxy Tablet 2A
YesYes0.016
THIN QFN/32
查看所有USB Host Adapter Emulator (23)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX20461EVKIT: Evaluation Kit for the MAX20461

质量和环境数据

申请可靠性报告: MAX20461 
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型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

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相关资料


MAX20463
Automotive USB Type-A to Type-C Port Converter with Protection

  • USB Type-C R1.3 compliance with integrated VBUS Discharge
  • Designed for Cooperative Protection with Head-Unit Protector
  • Robust Design Keeps Vehicle System and Portable Devices Safe in Automotive Environment

MAX20461
Automotive High-Current Step-Down Converter with USB-C Protection/Host Charger

  • One-Chip Type-C Solution Directly from Car Battery to Portable Device
  • Optimal USB Charging and Communication for Portable Devices
  • Low-Noise Features Prevent Interference with AM Band and Portable Devices

MAX16972, MAX16972A
3A、汽车级、高速USB保护器,带有Apple iPhone/iPad和USB 2.0充电检测

  • 拥有业界领先的RDS(ON),最大程度降低总线压降,有助于器件连接器上满足USB电压规范
  • 支持汽车应用环境的可靠过压和ESD保护,节省外部保护元件
  • 通过智能状态机实现充电模式自动转换,支持设备无缝集成

MAX16972A
3A、汽车级、高速USB保护器,带有Apple iPhone/iPad和USB 2.0充电检测

  • 拥有业界领先的RDS(ON),最大程度降低总线压降,有助于器件连接器上满足USB电压规范
  • 支持汽车应用环境的可靠过压和ESD保护,节省外部保护元件
  • 通过智能状态机实现充电模式自动转换,支持设备无缝集成