一个快速过渡的自适应的按时控制的BUCK转换器,带有双调制
Mengyuan Sun1, Chufan Chen1, Leiyi Wang1,2
1State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China.
Micromachines
|October 28, 2023
概括
本研究介绍了一种自适应按时 (AOT) 控制的逆转器,可以提高效率和短暂响应. 它可以有效地在脉冲宽度调制 (PWM) 和脉冲跳转调制 (PSM) 之间切换,以在不同负载下获得最佳性能.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 集成电路 集成电路
背景情况:
- 巴克转换器对于电压调节至关重要.
- 在buck转换器中实现快速过渡响应和高光负载效率仍然具有挑战性.
- 适应性及时控制 (AOT) 提供了提高性能的潜力.
研究的目的:
- 提出一个完全集成的自适应,按时控制的逆转器.
- 通过启用自适应模式切换来提高轻载荷效率.
- 为了实现快速负载的短暂响应.
主要方法:
- 实现了适应性定时发电机,以获得稳定的输出频率.
- 集成了一个零电流检测电路,用于自适应脉冲宽度调制 (PWM) 和脉冲跳转调制 (PSM) 切换.
- 设计和制造了使用TSMC 0.18微米BCD工艺的buck转换器.
主要成果:
- 转换器在5.5至15V的输入电压和高达5A的输出负载下工作.
- 实现了13μs (轻到重) 和15μs (重到轻) 的短暂恢复时间.
- 证明了最小的电压超值 (57 mV) 和低压 (53 mV).
结论:
- 拟议的双调制AOT控制转换器有效平衡了效率和短暂响应.
- 在PWM和PSM之间进行自适应切换可以在不同的负载条件下提高性能.
- 该设计适用于需要高效和响应性功率转换的应用.
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