Firmenblog über Recycle Infineon Gate Drivers: Half-Bridge/High-Side/Low-Side/Isolated Gate Driver

Recycle Infineon Gate Drivers: Half-Bridge/High-Side/Low-Side/Isolated Gate Driver

Shenzhen Mingjiada Electronics Co., Ltd., a specialist service provider with over twenty years’ experience in the electronic component recycling sector, offers comprehensive assurance for electronic component recycling through its global business network, professional technical team and standardised service processes.

Mingjiada’s Recycling Advantages:

Firstly, high-value recycling with immediate cash settlement. Leveraging its global supply chain network and real-time market monitoring, Mingjiada offers highly competitive industry quotes for electronic components, whilst strictly avoiding price suppression or deductions; it supports various settlement methods, including cash and bank transfers, to ensure prompt payment, helping clients swiftly free up tied-up capital and optimise inventory turnover efficiency.

Secondly, professional testing and accurate valuation. The company is equipped with a dedicated chip testing team and a full suite of testing equipment to conduct functional tests and verify product authenticity. Through X-ray inspection, we ensure the integrity of the wafer layers, accurately determine product grades and provide fair valuations. We refuse to accept refurbished or counterfeit products to safeguard the interests of both parties.

Thirdly, a global network for convenient transactions. Our recycling network spans both domestic and international markets, with collection points in Japan, Hong Kong, Russia, Europe and the Americas, supporting shipments from all over the world. We support multiple transaction methods, including on-site collection and courier delivery. The process is streamlined, sparing customers from cumbersome procedures and thereby achieving ‘rapid connection and efficient recycling’.

Recycling Guide

Mingjiada Electronics recycles electronic components with no minimum quantity requirement. We accept all types of products, including brand-new, factory-sealed items; slow-moving stock; surplus engineering materials; and serviceable products recovered from dismantled idle equipment. Customers need only provide basic information such as product model, quantity and specifications (e.g. packaging, frequency, version) to receive a prompt quotation; Once the quotation has been confirmed by both parties, Mingjiada will immediately arrange for collection, testing and settlement, ensuring the entire process is fully transparent and manageable. With over twenty years of industry experience, Mingjiada has established long-term, stable partnerships with thousands of factories and traders worldwide. We have earned an excellent reputation in the electronic components recycling sector for our ‘integrity, professionalism and convenience’, providing customers with more precise and efficient inventory solutions.

I. Low-Side Gate Drivers: A Simple and Efficient Low-End Switching Drive Solution

1. Operating Principle and Key Characteristics

Low-side gate drivers are the simplest power driver devices in terms of structure. The driver terminal is connected to the gate of the power device, whilst the source of the power device is directly earthed. The driver circuit shares a common ground with the power ground, eliminating the need for a floating power supply design. Their core advantages lie in their extremely simple circuitry, low cost and ease of debugging; they require only the amplification of low-voltage signals and gate charging/discharging functions, without the need for complex level-shifting or isolation circuits.

Infineon’s low-side drivers are compatible with standard CMOS/LSTTL logic and are designed for 3.3 V low-voltage control systems. They feature an integrated anti-interference Schmitt trigger circuit that effectively suppresses false triggering caused by circuit noise. Additionally, they incorporate essential protection functions such as under-voltage lockout (UVLO), overcurrent protection and active gate shutdown to ensure the stable operation of power devices.

2. Key Products and Technical Specifications

Infineon’s low-side drivers are primarily designed for general-purpose applications in the small-to-medium power range. The classic product range covers various drive currents and channel configurations: single-channel and dual-channel low-side drivers can meet the control requirements for multiple low-side switches, with peak sink/source currents ranging from 1 A to 9 A, making them suitable for driving small-to-medium power MOSFETs and IGBTs. Based on mature manufacturing processes, these products feature extremely low propagation delay and switching losses, making them ideal for high-frequency, lightweight applications.

3. Typical Application Scenarios

Primarily used in circuit topologies where the power device is grounded, including secondary rectifier drive in switching power supplies, LED lighting drivers, relay/contactor switching control, low-end motor speed control, and automotive low-voltage switching circuits. These are the preferred drive solutions for small-to-medium power non-isolated circuits in both consumer and industrial applications.

II. High-Side Gate Drivers: A Precise High-Side Drive Solution with Floating Potential

1. Operating Principle and Key Characteristics

In contrast to low-side drivers, high-side gate drivers are used to drive power devices located on the upper side of the load and the high-voltage side of the bus in circuit topologies. As the source of the power device is floating and not earthed, level-shifting technology is required to convert low-voltage logic signals into floating high-voltage drive signals. Infineon’s high-side drivers are exclusively equipped with SOI (Silicon-on-Insulator) technology, offering exceptional resistance to negative voltages; certain models can withstand a DC negative voltage of –11 V at the VS pin, effectively suppressing device failures caused by switching noise, with noise immunity and durability far exceeding those of products manufactured using conventional processes.

These drivers incorporate dedicated level-shifting circuits and floating voltage-regulating circuits, enabling precise matching to the floating potential of the high-voltage bus. They also integrate UVLO, short-circuit protection and fault feedback functions, thereby resolving the challenges of level offset, noise interference and erroneous switching associated with high-voltage floating drive applications.

2. Core Products and Technical Advantages

Infineon’s high-side drivers support high-voltage operating conditions ranging from 600 V to 1200 V and are compatible with high-voltage MOSFETs, IGBTs and SiC devices. The products feature high timing accuracy, low temperature drift and excellent propagation delay consistency, enabling precise high-frequency switching control. Some high-end models incorporate programmable dead-time and soft-switch functions, which effectively suppress voltage spikes and electromagnetic interference in high-voltage switching.

3. Typical Application Scenarios

Widely used in high-voltage high-side switching topologies, including high-side bridge arm drives for single-phase/three-phase inverters, high-voltage buck/boost converters, high-side motor speed control circuits, photovoltaic micro-inverters, and automotive high-voltage power supply systems—all of which require floating high-voltage drivers.

III. Half-Bridge Gate Drivers: Integrated High-Side and Low-Side Drive Solution

1. Product Positioning and Key Advantages

Half-bridge gate drivers are the flagship general-purpose products in Infineon’s EiceDRIVER™ series. They integrate two independent drive channels—high-side and low-side—on a single chip, and are specifically designed for half-bridge power topologies. Compared to discrete high-side and low-side drivers, integrated half-bridge drivers eliminate the need for additional timing alignment between the two channels. They feature built-in hardware interlock logic to prevent conduction, completely eliminating the risk of breakdown caused by simultaneous conduction of the upper and lower bridge arms, thereby significantly simplifying circuit design, reducing PCB area and lowering component costs.

The entire product range is based on Infineon’s proven thin-film SOI technology, offering exceptional immunity to interference, negative voltage tolerance and high-voltage stability, making it suitable for high-frequency, high-voltage and highly interfered industrial environments. The inputs are compatible with 3.3V logic levels, making them suitable for mainstream MCU and DSP control systems.

2. Key Core Product Series

- 2ED21xx Series: Classic 600V high-voltage half-bridge drivers, with representative models including the 2ED2106S06F and 2ED21091S06F. These support a negative voltage tolerance of -11V, offer excellent noise immunity, and feature peak drive currents suitable for medium- to high-power MOSFETs and IGBTs. They are highly versatile, covering applications such as industrial power supplies and variable-frequency drives in household appliances.

- 2ED2304S06F: A 650V high-voltage half-bridge driver that integrates Schmitt trigger inputs and high-precision interlock logic to minimise cross-conduction, significantly enhancing switching stability. It is suitable for small-to-medium-power high-frequency switching power supplies.

- IR2214SS: A 1200V high-voltage half-bridge driver integrating a full suite of protection functions—including DESAT short-circuit detection, soft shutdown, TLTO temperature lockout and fault reporting—specifically designed for high-voltage, high-power industrial inverter equipment and compatible with IGBTs and high-voltage SiC devices.

- IRS21844S: A 600V general-purpose half-bridge driver featuring a programmable dead time, with a drive capability of 1.9A sink current and 2.3A source current. Available in a wide range of package options, it is suitable for conventional industrial variable-frequency drives and switching power supply applications.

3. Typical Application Scenarios

Comprehensive coverage of half-bridge topology applications, including variable-frequency air conditioners, induction hobs, switching power supplies, DC-DC converters, single-phase inverters, low-voltage servo motor drives and automotive half-bridge power circuits. This is the most widely used category of gate drivers in the consumer electronics and industrial automation sectors.

IV. Isolated Gate Drivers: Highly Reliable Electrical Isolation Drive Solutions

1. Technical Positioning and Core Value

Isolated gate drivers are core products in Infineon’s high-end power drive portfolio. Through chip-level electrical isolation technology, they achieve complete electrical isolation between the low-voltage control side and the high-voltage power side, thereby completely preventing damage to the control system caused by high-voltage crosstalk, ground potential disturbances and common-mode interference. Compared to non-isolated drivers, they offer higher safety, immunity to interference and reliability, making them essential components for high-voltage, high-noise and high-safety-level applications.

Infineon’s isolated drivers are categorised into two main technical approaches: junction isolation and capacitive isolation. The entire EiceDRIVER™ 2EDi series of isolated products features ultra-high common-mode transient immunity (CMTI), with some high-end models reaching 150 V/ns, making them perfectly suited to the high-speed switching conditions of high-frequency, wide-bandgap devices such as GaN and SiC.

2. Core Products and Technical Highlights

- 2EDi dual-channel isolated series: Dual-channel isolated drivers specifically designed for half-bridge topologies, compatible with the full range of CoolMOS™, CoolSiC™ and CoolGaN™ power devices. They support both hard-switching and soft-switching topologies, optimising power conversion efficiency and ensuring stable operation under both nominal and abnormal conditions.

- 2EDB8259Y: A high-performance isolated driver specifically designed for GaN, featuring high peak sink and source currents of 5A/9A, an ultra-short propagation delay of 38ns, minimal temperature drift and timing errors, and ultra-high CMTI immunity; suitable for high-frequency, high-power new energy equipment.

- 1ED3131MU12H: A compact, single-channel isolated driver in a DSO-8 wide-body package with ample creepage distance. It integrates independent sink/source current outputs, input filtering, active shutdown and short-circuit clamping functions, making it suitable for high-voltage IGBT and SiC MOSFET drive applications.

- 2EDL8034G4B: A 120 V junction-isolated high-side and low-side driver characterised by high integration and a compact form factor, suitable for high-frequency isolated drive applications in small to medium power ranges.

3. Typical Application Scenarios

Focusing on industrial and new energy applications requiring high reliability, high safety and resistance to strong interference, including photovoltaic inverters, energy storage converters, new energy vehicle electronic control systems, industrial servo drives, high-voltage variable-frequency drives, medical power supplies and rail transport power systems, these devices effectively mitigate safety risks associated with high-voltage breakdown, electromagnetic interference and leakage current.