Design and manufacture semiconductor products - SHYSEMI

IPM vs. Discrete IGBTs: Which is Better for Motor Drive Applications?

Mon, 15 Jun 2026 01:52:33 -0700

In industrial automation, variable frequency drives (VFDs), servo drives, and pump/fan motor control systems rely heavily on robust power semiconductor solutions. When selecting the optimal architecture, designers typically face a choice between Intelligent Power Modules (IPMs) and Discrete IGBTs.

For standard industrial motor drive applications, the consensus among design engineers is clear: IPMs are the preferred choice for the vast majority of motor control designs, whereas discrete IGBT solutions are reserved for ultra-high-power systems or highly specialized, custom-engineered equipment.

1. Structural Comparison: The Core Difference

Discrete IGBT Architecture

Characteristics: Power devices, gate drivers, protection circuitries, and current/temperature sensing components are all independently implemented externally. This discrete layout increases circuit complexity and relies heavily on the engineer's peripheral hardware design expertise.

IPM (Intelligent Power Module)...Read More

Semiconductor Testing Deep Dive: Technical Analysis of WAT, CP, and FT

Wed, 10 Jun 2026 23:46:12 -0700

In the semiconductor supply chain, transitioning an integrated circuit (IC) from design to mass production requires navigating hundreds of highly challenging fabrication steps. As the backbone of quality control (QC), the semiconductor testing process acts as three rigorous checkpoints that directly determine the reliability of the final delivered silicon. Driven by the continuous expansion of the semiconductor test equipment market, the wafer and package test matrix—comprising WAT (Wafer Acceptance Test), CP (Circuit Probing), and FT(Final Test) —has emerged as a strategic imperative for manufacturers to optimize yield and control manufacturing costs.
SHYSEMI has entered into a partnership with Huahong Group, the sixth largest in the world, and possesses high-precision and comprehensive chip testing and inspection systems. By providing an in-depth analysis of these three core test stages, we aim to help the industry transition from passive inspection to proactive yield management.
1. The Complete IC Test Workflow: Three Checkpoints Working in Synergy
IC testing in semiconductor manufacturing is far more than a simple electrical continuity check. It is a comprehensive quality monitoring and failure analysis (FA) framework spanning the entire lifecycle of wafer fabrication, packaging, and final product delivery. Wafer Acceptance Test (WAT), Circuit Probing (CP), and Final Test (FT) establish sequential defensive lines, forming an IC test network characterized by layered screening and data cross-verification.
[Wafer Fab Complete] -> [WAT: Process Window...Read More

High-Efficiency IPM Solution for Fish Pond Aerator Pumps: Reliable Variable Frequency Drive (VFD) Design

Mon, 08 Jun 2026 22:46:15 -0700

1. Executive Summary
Traditional fish pond aerator pumps rely primarily on discrete component drives running at a fixed, constant speed. Operating in harsh outdoor conditions—such as high humidity, heavy condensation, drastic day-night temperature fluctuations, and unstable rural power grids—these legacy systems frequently suffer from motor burnout, nuisance tripping, overcurrent shutdowns, and excessive energy consumption.
To address these pain points, SHYSEMI introduces an industrial-grade IPM (Intelligent Power Module) solution in an SDIP26 package tailored specifically for aerator pumps. By integrating power inverters, gate drivers, and comprehensive protection circuitry into a single module, this solution eliminates the need for bulky discrete layouts. Designed for three-phase aerator pumps up to 1.5kW (including paddlewheel, impeller, and surge types), it enables variable frequency drive (VFD) control, high energy efficiency, exceptional moisture resistance, and maintenance-free operation.
2. Industry Challenges & Technology Comparison
2.1 Drive Architecture Comparison
For Electric Vehicle (EV) owners, winter driving brings two major pain points: significant driving range reduction and inefficient cabin heating in cold weather. As the critical system designed to address these challenges, the performance of the EV heat pump air conditioner heavily relies on the component selection inside its core unit—the Compressor Controller.
What Triggers the Shift from IGBTs to SiC MOSFETs in EV Heat Pumps?
Traditional Internal Combustion Engine (ICE) vehicles rely on wasted engine heat to warm the cabin. Lacking this "natural heat source," battery electric vehicles (BEVs) have turned to heat pump systems as the mainstream solution. By moving thermal energy from the ambient air into the cabin, heat pumps consume only about one-third of the energy used by traditional PTC resistive heaters, significantly preserving winter driving range.
However, the performance ceiling of a heat pump is entirely dictated by its compressor controller. The controller must drive the compressor motor with high precision, maintaining stable power output across a wide range of temperatures and rotational speeds.
Historically, IGBTs (Insulated Gate Bipolar Transistors) were the default power semiconductors for these controllers....Read More

Why Industrial Motor Drives Are Increasingly Dependent on Intelligent Power Modules (IPMs)

Wed, 27 May 2026 00:37:58 -0700

With the rapid advancement of industrial automation, smart manufacturing, and energy-efficiency initiatives, traditional motor drive circuits built with discrete components can no longer meet the demands of modern industrial systems. Today's industrial motors require high reliability, high-frequency speed control, compact designs, intelligent operation, and low power loss.
Leveraging high integration, built-in protection functions, and compatibility with intelligent control systems, Intelligent Power Modules (IPMs) have become the preferred power solution for industrial applications such as variable frequency drives (VFDs), servo drives, fans, pumps, and CNC machine tools.
What Is an IPM? (Structure Overview)
An IPM (Intelligent Power Module) is an integrated power semiconductor module specifically designed for inverter-based motor drive systems. Unlike standalone power switching devices, an IPM integrates power devices, gate driver circuits, protection circuitry, and sensing functions into a single package, forming a compact power drive system.
Key Advantages of IPMs
Simplified peripheral circuitry
Minimal debugging...Read More

How does the thermal shutdown protection function of IGBT IPM work?

Thu, 14 May 2026 02:19:22 -0700

SHYSEMI IPM solutions integrate a thermal shutdown protection circuit designed to monitor the junction temperature of the LVIC (Low-Side Gate Driver).
When the LVIC junction temperature (Tj) exceeds the specified threshold, the TSD function is activated. The system immediately turns off the lower-arm IGBTs of all phases and outputs an FO fault signal.
It is important to note that the monitored temperature is the LVIC chip temperature rather than the IGBT chip temperature. Due to thermal response delay, the TSD function cannot effectively respond to rapid IGBT junction temperature rise caused by severe fault conditions.
This article introduces the third protection feature: Thermal Shutdown Protection (TSD).
Thermal Shutdown Protection (TSD) BM6337xS Series Only
01 Thermal Shutdown Protection (TSD)
SHYSEMI IPMs include an integrated thermal shutdown circuit capable of monitoring the temperature of the LVIC (Low-Side Gate Driver).
When the LVIC temperature exceeds the predefined protection threshold, the TSD function is activated.
At this point, the lower-arm IGBTs in all phases are forcibly...Read More

Half-Bridge vs. Three-Phase Full-Bridge in IGBTs: What’s the Difference? | SHYSEMI

Tue, 28 Apr 2026 00:44:58 -0700

In power electronics, the topology of an IGBT (Insulated Gate Bipolar Transistor) defines how current is controlled and where the device can be used.
Two of the most common configurations are the half-bridge and the three-phase full-bridge.
In simple terms, the half-bridge is a building block, while the three-phase full-bridge is a complete system for driving multi-phase loads.
1. Topology Comparison: Half-Bridge vs. Three-Phase Full-Bridge
Half-Bridge Topology
Structure:
Two IGBT switches connected in series (high-side and low-side).
Output:
One AC output node taken from the midpoint of the two switches.
Current Path:
Requires either:
A split DC bus (with capacitors), or
Another half-bridge to complete the circuit
This is the most basic power switching cell in many converter designs.
Three-Phase Full-Bridge Topology
Structure:
Three half-bridge legs combined into one system, totaling six IGBTs.
In any semiconductor device, I/O (Input/Output) circuits are essential building blocks that interface the internal core logic with the external system.
Although the basic structure of CMOS I/O circuits appears simple, achieving robust performance under ground bounce (SSN) and maintaining signal integrity can be highly challenging.
At this article, we focus on practical I/O design methodologies for modern semiconductor devices, including:
1.What is an I/O circuit in a chip?
2.Types of I/O architectures
3.Key electrical parameters of I/O circuits
4.Design challenges and critical considerations
5.Ground bounce simulation setup
6.VIH/VIL measurement under noise conditions
An I/O circuit refers to the interface circuitry that connects internal core logic to external pins.
Physically, I/O cells are typically located in the pad ring at the periphery of the chip layout.
1. Core Functions of I/O Circuits
1.1 Level Shifting
Internal voltage domains often differ from external system levels. I/O circuits provide voltage level translation between core and I/O domains.
Driven by the trends of home appliance inverterization and high energy efficiency, washing machines—as core "white goods"—now face stricter requirements for drive efficiency, acoustic comfort, and reliability.
SHYSEMI, leveraging its self-developed core components and algorithms, introduces a full-power-range inverter washing machine solution. Covering 300W to 1500W, it is compatible with top-load, front-load, and washer-dryer combos. Centered on "Self-developed IPM + 6th Gen IGBT + Sensorless FOC Algorithm," this solution balances performance with cost, assisting manufacturers in the rapid deployment of high-efficiency, highly competitive models.
1. IPM Solution Architecture
The solution adopts the classic topology of "PFC Power Correction + IPM Inverter Drive + BLDC Motor Closed-loop Control." Its core advantages lie in integrated design and algorithmic optimization, which significantly simplify hardware layout and enhance operational stability.
1.1 Breakdown of the Three Core Links
Power Supply Link: Main Input → SHYSEMI Read More

How to Better Characterize SiC MOS Dynamic Performance Using Double Pulse Testing

Thu, 16 Apr 2026 00:38:54 -0700

Introduction
With the rapid evolution of silicon carbide (SiC) MOSFET technology, its high-frequency switching advantages over traditional Si IGBTs have attracted increasing attention from engineers.This advantage primarily stems from the high electron saturation drift velocity of SiC MOS devices, enabling rapid transitions between on and off states, significantly reducing switching time.
At the same time, as a unipolar device, SiC MOSFETs exhibit no minority carrier storage during freewheeling, unlike bipolar Si IGBTs. This results in dramatically lower reverse recovery losses. In fact, the reverse recovery charge (Qrr) of SiC MOS is typically only about one-tenth that of comparable silicon devices.
In many applications, such as: motor drives, EV charging, solar inverters, the intrinsic body diode of the SiC MOSFET can be directly used as the freewheeling diode, improving power density while reducing system cost.
To fully exploit these high-frequency...Read More

Design and manufacture semiconductor products - SHYSEMI

IPM vs. Discrete IGBTs: Which is Better for Motor Drive Applications?

Semiconductor Testing Deep Dive: Technical Analysis of WAT, CP, and FT

High-Efficiency IPM Solution for Fish Pond Aerator Pumps: Reliable Variable Frequency Drive (VFD) Design

Why Industrial Motor Drives Are Increasingly Dependent on Intelligent Power Modules (IPMs)

How does the thermal shutdown protection function of IGBT IPM work?

SHYSEMI IPMs include an integrated thermal shutdown circuit capable of monitoring the temperature of the LVIC (Low-Side Gate Driver).
When the LVIC temperature exceeds the predefined protection threshold, the TSD function is activated.

Half-Bridge vs. Three-Phase Full-Bridge in IGBTs: What’s the Difference? | SHYSEMI

Structure:
Two IGBT switches connected in series (high-side and low-side).

Structure:
Three half-bridge legs combined into one system, totaling six IGBTs.

An I/O circuit refers to the interface circuitry that connects internal core logic to external pins.

1.1 Level Shifting

Internal voltage domains often differ from external system levels. I/O circuits provide voltage level translation between core and I/O domains.

How to Better Characterize SiC MOS Dynamic Performance Using Double Pulse Testing

Design and manufacture semiconductor products - SHYSEMI

IPM vs. Discrete IGBTs: Which is Better for Motor Drive Applications?

Semiconductor Testing Deep Dive: Technical Analysis of WAT, CP, and FT

High-Efficiency IPM Solution for Fish Pond Aerator Pumps: Reliable Variable Frequency Drive (VFD) Design

Why Industrial Motor Drives Are Increasingly Dependent on Intelligent Power Modules (IPMs)

How does the thermal shutdown protection function of IGBT IPM work?

SHYSEMI IPMs include an integrated thermal shutdown circuit capable of monitoring the temperature of the LVIC (Low-Side Gate Driver).When the LVIC temperature exceeds the predefined protection threshold, the TSD function is activated.

Half-Bridge vs. Three-Phase Full-Bridge in IGBTs: What’s the Difference? | SHYSEMI

Structure:Two IGBT switches connected in series (high-side and low-side).

Structure:Three half-bridge legs combined into one system, totaling six IGBTs.

An I/O circuit refers to the interface circuitry that connects internal core logic to external pins.

1.1 Level Shifting

Internal voltage domains often differ from external system levels. I/O circuits provide voltage level translation between core and I/O domains.

How to Better Characterize SiC MOS Dynamic Performance Using Double Pulse Testing

SHYSEMI IPMs include an integrated thermal shutdown circuit capable of monitoring the temperature of the LVIC (Low-Side Gate Driver).
When the LVIC temperature exceeds the predefined protection threshold, the TSD function is activated.

Structure:
Two IGBT switches connected in series (high-side and low-side).

Structure:
Three half-bridge legs combined into one system, totaling six IGBTs.