Integrated lossless load current sensing method for buck–boost DC–DC converters

Ma Y.

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Integrated lossless load current sensing method for buck–boost DC–DC converters

机译：降压-升压型DC-DC转换器的集成无损负载电流感测方法

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摘要

An integrated lossless load current sensing method for buck–boost DC–DC converters is presented. The load current is detected by sensing the average current flowing through the power transistor connected between the inductor and the output capacitor. The circuit is almost independent of voltage and temperature by using a sense resistor method. A second-order on-chip lowpass filter is adopted to average the sensed voltage. The buck–boost converter could automatically switch between heavy and light load modes with a fixed switching current for different input and output voltages.

机译：提出了一种用于降压-升压型DC-DC转换器的集成无损负载电流感测方法。通过感测流经连接在电感器和输出电容器之间的功率晶体管的平均电流来检测负载电流。通过使用感测电阻器方法，该电路几乎与电压和温度无关。采用二阶片上低通滤波器来平均感测电压。降压-升压转换器可以针对不同的输入和输出电压，以固定的开关电流自动在重载和轻载模式之间切换。

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来源
《Electronics Letters》 |2015年第1期|88-90|共3页
作者
Ma Y.;
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作者单位

Northwestern Polytechnical University, People's Republic of China;

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正文语种 eng
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关键词
DC-DC power convertors; electric current measurement; low-pass filters; resistors; buck-boost DC-DC converters; fixed switching current; heavy load modes; inductor; input voltages; integrated lossless load current sensing method; light load modes; load current detection; output capacitor; output voltages; power transistor; second-order on-chip low-pass filter; sense resistor method;

机译：DC-DC功率转换器;电流测量;低通滤波器;电阻器;降压-升压DC-DC转换器;固定开关电流;重载模式;电感器;输入电压;集成无损负载电流感测方法;轻载模式;负载电流检测;输出电容器;输出电压;功率晶体管;二阶片上低通滤波器;感测电阻器方法;

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专利

1. Load current-sensing circuit integrated in high-frequency PWM/PFM hybrid DC–DC buck converter [J] . Yuan B., Lai X., Liu Y. Electronics Letters . 2014,第18期

机译：集成在高频PWM / PFM混合DC-DC降压转换器中的负载电流检测电路
2. Absolute Value, 1% Linear and Lossless Current-Sensing Circuit for the Step-Down DC-DC Converters With Integrated Power Stage [J] . Michal V. IEEE Journal of Solid-State Circuits . 2014,第5期

机译：具有集成功率级的降压型DC-DC转换器的绝对值，1％线性无损电流检测电路
3. A 3.3-MHz fast-response load-dependent-on/off-time buck-boost DC-DC converter with low-noise hybrid full-wave current sensor [J] . Wang Zhao, Chen Biao, Zhu Lei, Microelectronics journal . 2018,第APRa期

机译：具有低噪声混合全波电流传感器的3.3MHz快速响应负载相关的开/关时间降压-升压型DC-DC转换器
4. A digitally controlled DC-DC buck converter with lossless load-current sensing and BIST functionality [C] . Liu Tao, Yeom Hyunsoo, Vermeire Bert, 2011 IEEE International Solid-State Circuits Conference Digest of Technical Papers . 2011

机译：具有无损负载电流检测和BIST功能的数控DC-DC降压转换器
5. Digitally Controlled DC-DC Buck Converters with Lossless Current Sensing [D] . Liu, Tao 2011

机译：具有无损电流感应的数控DC-DC Buck转换器
6. An Optimal Current Observer for Predictive Current Controlled Buck DC-DC Converters [O] . Run Min, Chen Chen, Xiaodong Zhang, 2014

机译：预测电流控制降压DC-DC转换器的最佳电流观测器
7. Integrated Single-Inductor Buck-Boost or Boost- Boost DC-DC Converter with Power-Distributive Control [O] . Hung-wei Chang, Wei-hsun Chang, Chien-hung Tsai 2015

机译：具有功率分配控制的集成单电感器降压 - 升压或升压 - 升压DC-DC转换器
8. ASDTIC CONTROL AND STANDARDIZED INTERFACE CIRCUITS APPLIED TO BUCK, PARALLEL AND BUCK-BOOST DC TO DC POWER CONVERTERS [R] . A. D. Schoenfeld, Y. Yu 1973

机译：适用于降压，并联和降压直流到直流电源转换器的asDTIC控制和标准化接口电路

Integrated lossless load current sensing method for buck–boost DC–DC converters

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