3 Classic Op Amp Circuit Analyses

Guide to op amp circuits: using virtual short to analyze inverting,ws 809 solder paste noninverting, summing and balanced summing amplifiers with practical examples.

Understanding AGND and DGND Grounding Practices

Practical grounding and decoupling guide for mixed-signal systems covering ground plane, AGND/DGND strategies, PCB layout, and ADC/DAC clock and return-path issues.

ESD Implementation Strategies for Amplifier Inputs

Guide to internal ESD diodes and overvoltage protection for amplifier inputs, covering diode topologies, current limiting, thermal effects, and electromigration.

Crystal Oscillator Operation and Load Capacitor Selection

Practical engineering guide to Pierce oscillator design: crystal equivalent model, load capacitance tuning, startup/gain margin checks, drive-level and PCB layout recommendations.

How to Choose Inductors: Common Parameters

Technical guide to inductors and inductance: covers permeability, resistance, core loss, saturation, self-resonant frequency, ripple and selection for DC/DC converters.

MOSFET Gate Driver Circuit Design

Overview of MOSFET gate drive principles, gate-to-source capacitance and gate charge, threshold behavior, and gate charge calculation for driver circuit design.

China SiC Substrate Prices Fall in 2024; 800V Adoption Nears

Analysis of China SiC substrate price decline in 2024: domestic prices plunged vs global quotes, driven by capacity expansion, competition and potential price war.

Common Diode Uses in LDO Circuits

Summary of common diode applications in LDO circuits: reverse-connection protection, GND isolation, input-output clamping, and output drop/backfeed prevention.

Handling Unused Op Amp or Comparator Pins

Guidance on terminating unused op amp sections and comparators to avoid floating inputs: use voltage followers to set inputs to ground or VCC/2.

Silicon Carbide Power Devices: Properties and Principles

Review of silicon carbide (SiC) power devices covering principles, key characteristics, applications and challenges for high-efficiency power electronics and energy conversion.

Efficient Interconnects for SiC Power Devices

Analysis of silver sintering and copper wire bonding for SiC power devices, comparing sintering methods, substrate surface effects and thermal-shock impact on reliability.

Understanding MOSFET Parameters

MOSFET technical summary of electrical and thermal specs: key ratings (VDSS, VGS, ID), thermal resistance RθJA and Tj calculation, capacitances, gate charge and switching timings.

IGBT Switching Process and Driver Design Factors

Technical analysis of IGBT switching with diode?clamped inductive load: interval-by-interval turn-on/turn-off waveforms, diode recovery, tail current, and driver requirements.

Why Paralleling Schottky Diodes Is Not Recommended

Overview of Schottky diode characteristics and usage notes, including forward voltage, reverse leakage behavior, and why paralleling identical diodes risks unequal current sharing.

What Is Diode Clamping? Applications of Clamping Protection

Overview of diode clamp and clamping circuit operation, positive/negative and bias clamps, RC time-constant design, component selection, and protection applications.

Derating Guidelines for Power Supply Components

Practical derating guidelines for power-supply components: rules, accelerated-test models, and component-specific limits (ICs, capacitors, MOSFETs, resistors) for reliability.

Crystal Growth Methods for Lowering SiC Substrate Costs

Technical overview of silicon carbide substrate production comparing PVT, liquid-phase and HTCVD crystal growth methods, challenges and advances in scaling low-defect wafers.

Nine Essential Circuit Modules for Hardware Engineers

Summarizes nine standard circuit design modules - power module, IO, op amp decoupling, high-speed termination, ground return, test points - to improve PCB design reliability.

Hidden Pitfalls of Inverting Input Amplifiers

Explains how an inverting amplifier's low input impedance (equal to Rin) and source internal resistance reduce closed-loop gain, causing gain error and instability.

MOSFET Gate Circuits and PNP Turn-off Driver

Technical overview of MOSFET gate functions and drive implementations, including direct drive, external drivers, speed?up diode, PNP turn?off, floating and isolated drives.