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提高集成度和能效,将USB-C™ PD充电提升到新的水平

由  Julie Tyler 发布  - 03-10-2020 

USB-C正成为电子和充电方面家喻户晓的术语。多年来,大多数家居周围都有各种各样的充电电缆,似乎总是有人放错了“他们需要的那根”。根据IHS Markit的数据,从2016年到2021年,USB-C™连接器的普及率预计将达到74.1%的复合年增长率(CAGR)。

USB-C采用对称的通用连接器,改变了电子行业连接器无法方便地正反逆插的状况。随着USB-C普及率的提高,家庭中使用的电缆类型将会减少,从而减轻了寻找“正确”电缆的烦恼。

随着USB-C越来越多地渗透到电子行业中,它给半导体供应商提出了挑战,对为市场提供的方案进行创新和改进。电源适配器在变得越来越小,能效更高,并且能够进行更高功率的充电。安森美半导体紧跟这些市场趋势,了解行业需求并开发集成方案以满足这些需求。安森美半导体延续其在电源管理和USB-C方案的领先地位,终推出这首款集成的同步整流器和自主USB-C™PD 3.0和可编程电源(PPS)控制器,简化次级端系统设计。

安森美半导体最近推出了FAN6390,符合最新的USB-C PD 3.0和PPS标准,适用于移动和超便携式AC - DC电源适配器。PPS标准是电源设计人员特别感兴趣的,因为它为特定供电(PD)功率范围内的充电水平提供了更精细的粒度。被充电的设备现在可以以20mV的微小增量请求3.3V至21V范围内的任何电压,并以50mA的增量请求从1A至5A范围内的恒定电流限制。

该产品将PHY、协议和策略层集成在一个单片方案中,简化了对最新标准的适应。该方案不需要固件编程或不基于微控制器,因为它包含了所有必需的功能。由于集成度更高,因此该方案可实现更高的功率密度设计,同时最小化物料构建(BOM)的器件数。由于BOM更少的器件,设计人员有更大的灵活性部署器件,并可最小化所需的PCB面积。

FAN6390是安森美半导体USB-C PD 3.0控制器系列集成PPS的首款器件。更大容量电池需具备相同或更快充电时间的趋势正在加速USB-C PD/ PPS的采用。FAN6390产品系列实现的集成度令人注目,将增强行业设计并提高各种物体的功率密度,如用于各种电子设备的旅行适配器、AC-DC电源适配器和辅助电源及内部电源。优化的结构提供基于状态机的运行模式,实现PD 3.0和PPS功能所需的所有功能,从而简化了最终产品的设计和制造。FAN6390利用极低的5mΩ检测电阻器可产生高能效。领先业界的同步整流器FET驱动技术进一步提高了能效。 FAN6390的微调选项设置还为设计人员提供灵活性和可编程性。

内置高分辨率10位数模转换器(DAC) 完全符合USB-C™ PD 3.0要求,精细地解决了PPS恒流/恒压(CC / CV)要求。此外,FAN6390提供N-FET驱动器、温度监控和VCONN 低压降稳压器(LDO),以进一步简化系统要求并最小化总体BOM成本。

安森美半导体不仅以FAN6390等方案最大程度地降低系统复杂性,还为客户提供完整的参考设计,以快速高效地优化新系统。

FAN6390搭配使用FAN604H PWM控制器可实现灵活的27W参考设计FAN6390FAN604 PWM控制器也可供货。

请务必要查看我们的FAN6390设计资源

立即了解有关我们的USB-C方案的更多信息,以及它们如何满足您的设计和方案需求用于各种电子设备的应用,如旅行适配器、AC-DC电源适配器和辅助电源以及内部电源。

标签:Power Supply, Portable and Wireless, Consumer, Automotive, Computing and Peripherals, IoT, Internet of Things
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