MAX20457

• 双路高压降压型转换器，集成功率FET，最大程度减小方案面积
• 3.5V至40V输入电源范围
• Buck1提供5V输出，高达3.5A输出电流
• Buck2提供3.3V输出，高达2A输出电流
• 转换器输出电压可利用外部电阻在1V至4V范围内调节
• ±2% buck转换器输出电压精度
• 可选Buck2输入源
• 频率同步输入
• 独立使能输入
• 电压监测PGOOD输出
• 关键节点提供跳线和测试点，简化评估
• 经过验证的PCB布局
• 完全装配并经过测试

MAX20457评估套件(EV kit)为完全装配并经过测试的电路板，用于评估MAX20457 2.1MHz双路buck转换器。全部已安装元件均可工作在汽车级温度范围。为便于评估，包含各种测试点和跳线。

标准评估套件已安装MAX20457ATIE/VY+ (5V、3.3V，2.1MHz)，只需更换MAX20457评估套件材料清单上的极少元件，即可用于评估其他MAX20457版本。

应用

• 汽车启停系统
• 仪表板
• 导航及无线电头单元
• 远程信息处理应用

• Complete reference design for Type 2 EVSE Cordset (IC-CPD)
• Power level from 2.3 kW up to 3.6 kW
• Designed to comply with the applicable standards - IEC61851, IEC62752
• Incorporates a 6 mA DC/30 mA rms RCD and a control pilot circuit
• Stuck relay detection and relay state of health
• Overtemperature detection
• Integrated isolation
• Reduced component count for cost optimization
• Bluetooth 5.2 interface for connectivity to external devices
• Open-source software stack to enable custom firmware development

The AD-ACEVSECRDSET-SL is a complete Type 2 EVSE 3.6 kW charging cable solution, providing a reference design intended for evaluation and prototyping of electric vehicle (EV) charging systems.

The system includes a 3-channel isolated sigma-delta (Σ-Δ) ADC for voltage and current measurement on the single-phase power input and measurement of the relay voltage for solder contacts detection and relay state of health. Safe operation is enabled by the inclusion of a 6 mA DC / 30 mA rms RCD. Detection of overvoltage, undervoltage, overcurrent, overtemperature and EV diode presence is also available.

A MAX32655 low-power, ARM^® Cortex^®-M4 Microcontroller implements the logic for system control and communication with the EV over the control pilot interface. A programming and debugging interface are included. The MAX32655 Bluetooth 5.2 interface enables connectivity to external devices.

The design is accompanied by an open-source software stack and reference applications, enabling custom software development to start from a proven implementation validated to meet the applicable standards. An external programmer such as the MAX32625PICO MAXDAP Programming Adapter, or any other similar programmer supporting the SWD interface, is required to enable firmware programming and debug.

The system is designed to comply with the IEC61851 and IEC62752 standards.

APPLICATIONS

• EV charging