电子工程专辑

揭秘DC-BIAS效应：电容“缩水”对电源噪声的影响

不可能吧？电容不还是那个电容吗？为什么接到1V的直流电压时和接到3.3V的直流电压效果会不一样？相信大多数粉丝都不知道 ...
电子工程专辑

答题|揭秘DC-BIAS效应：电容“缩水”对电源噪声的影响

大家再复习下在PCB电源设计中哪些因素会影响用电芯片的PDN阻抗或者说是噪声呢？ 1，从文章的这个DC-BIAS特性来说，这个是 ...
EDN电子技术设计

揭秘DC-BIAS效应：电容“缩水”对电源噪声的影响

我们这篇文章简单的介绍了DC-Bias的原理并用了一个电容来验证了直流偏置对电容PDN阻抗的影响。
Electronic Design

Diagnosing Class II MLCC Effective Capacitance and Aging Under DC Bias

For decades, multi-layer ceramic capacitors (MLCCs) have been the go-to choice for surface-mounted capacitors due to their many advantages, such as wide available capacitance range, non-polarity, low ...
EDN

DC/DC bias-supply module cuts EV power solution by 50%

Texas Instruments (TI) Inc. has claimed the industry’s smallest and most accurate 1.5-W isolated DC/DC bias-supply module with an integrated transformer. By delivering more than 1.5 W at ambient ...
Electronic Design

Use LTspice Simulations to Gauge the Effect of Voltage Dependence

Using LTspice to determine the effect of voltage dependence caused by MLCCs. How to simulate for applications with variable voltage. Nonlinear models vs. the standard constant-capacitance model. This ...
EDN

Power Tips #139: How to simplify AC/DC flyback design with a self-biased converter

The demand for smaller, lighter, and more efficient AC/DC USB power delivery (PD) chargers is always a challenge for power-supply design engineers. Below 100 W, the quasi-resonant flyback is still the ...