Texas Instruments TPS546C23同步降压转换器
Texas Instruments TPS546C23同步降压转换器是集成了FET且符合PMBus 1.3规范的非隔离式直流-直流转换器。 这些器件都能在高频下运行并输出35A电流，采用5mm × 7mm封装。 两个TPS546C23器件可以并联，以便产生高达 70A 的负载电流。 通过针对少量功率级电流进行采样实现电流感测，与器件温度无关。 集成NexFET功率级和优化驱动器提供高频低损耗开关功能，可实现超高密度电源解决方案。 PMBus接口通过VOUT_COMMAND启用AVS功能，同时支持灵活转换器配置以及关键参数监控功能（包括输出电压、电流和内部芯片温度监控）。 对故障条件的响应可设为重启、锁存或忽略，具体取决于系统要求。
特性
- 35A PMBus™ 1.3 compliant converters
- 2-device stackable for up to 70A with current sharing
- 4.5V to 18V input voltage range
- 0.35V to 5.5V output voltage range
- 5mm×7mm LQFN package
- Single thermal pad
- Integrated 3.2mΩ and 1.4mΩ stacked NexFET™ power stage
- 350mV to 1650mV reference for Adaptive Voltage Scaling (AVS) function and margining through PMBus
- 0.5% reference accuracy at 600mV and above
- Lossless low-side MOSFET current sensing
- Voltage mode control with input feed-forward
- Differential remote sensing
- Monotonic start-up into a pre-biased output
- Output voltage and output current reporting
- Internal die temperature monitoring
- Programmable via the PMBus interface
- VOUT_COMMAND and AVS VOUT transition rate
- Overcurrent protection with thermal compensation
- UVLO, soft-start, and soft-stop
- PGOOD, OV, UV, OT levels
- Fault responses
- Turn-on and turn-off delays
- Thermal shutdown
- Pin strapping for switching frequency (200kHz to 1MHz)
- Frequency synchronization to an external clock or output clock to sync out
应用
- Test and instrumentation
- Ethernet switches, optical switches, routers, base stations
- Servers
- Enterprise storage SSD
- High-density power solutions
Simplified Application
Related Development Tools
Texas Instruments TPS546C23EVM1-746 评估模块 (EVM)
旨在有助于评估 TPS546C23、电压模式、35A 同步降压转换器。
Texas Instruments TPS546C23EVM2-746转换器评估模块
旨在演示TPS546C23（PMBus同步降压转换器）的堆叠操作。
发布日期: 2016-10-21
| 更新日期: 2022-05-24