Блог компании Mingjiada Supplies and Recycles the Infineon 4DIR1400H ISOFACE™ Four-Channel Digital Isolator (DSO-16 Package)

In high-voltage industrial control and automotive electronic systems, signal isolation is a critical factor in ensuring safe and reliable system operation. As a professional distributor and recycler of electronic components, Shenzhen Mingjiada Electronics Co., Ltd. now supplies and recycles the Infineon ISOFACE™ series 4DIR1400H four-channel digital isolator for customers worldwide. Housed in a PG-DSO-16 wide-body package, this device offers excellent noise immunity and precise timing characteristics, making it an ideal choice for high-power-density designs.

Product Overview: Why Choose the 4DIR1400H?

The 4DIR1400H belongs to Infineon’s ISOFACE™ family of four-channel digital isolators and features a 3+1 channel configuration (3 forward channels and 1 reverse channel). This configuration is specifically designed for applications requiring bidirectional data exchange and is particularly well-suited for isolated SPI communication—the three forward channels carry the SCLK, SDI, and CS signals, while the single reverse channel is used for SDO data transmission, enabling complete SPI interface isolation.

Based on Infineon’s patented core-less transformer (CT) technology, the device uses silicon dioxide (SiO₂) as the insulating layer to provide robust high-voltage isolation and long-term reliability.

Key Technical Advantages

1. Robust High-Voltage Isolation Capability

The 4DIR1400H provides an isolation withstand voltage of up to 5,700 Vrms (compliant with UL 1577), with both creepage distance and clearance reaching 8 mm, meeting reinforced insulation requirements. Its comparative tracking index (CTI) exceeds 600 V, and it is classified as Class I material, making it suitable for demanding high-voltage environments.

2. Excellent Common-Mode Transient Immunity (CMTI)

This device features a common-mode transient immunity of 100 kV/µs (minimum), ensuring error-free signal transmission in SiC/GaN switching power supply or motor drive applications where high dv/dt noise is present.

3. Precise Timing Performance

Typical propagation delay: 26 ns

Channel-to-channel mismatch: 3 ns (typical)

Pulse width distortion: <3 ns (@3.3 V)

Precise timing characteristics help reduce the “dead time” in switching power supplies and improve system efficiency.

4. Wide Supply Voltage Range and Low Power Consumption

Operating supply voltage: 2.7 V to 6.5 V

Low current consumption: 1.6 mA/channel (@1 Mbps, 3.3 V, 15 pF load)

Data rates up to 40 Mbps

Package and Compatibility

Package type: PG-DSO-16 wide-body (300 mil)

Package Dimensions: 10.3 x 10.3 mm

Pin Compatibility: Pin-compatible with commercially available four-channel digital isolators in SOIC-16 wide-body packages

Operating Temperature Range: -40°C to +125°C

Typical Applications

The 3+1-channel configuration of the 4DIR1400H makes it ideal for the following applications:

Isolated SPI Communication: Perfectly meets the 4-wire signal isolation requirements of SPI interfaces

Server and Telecom Power Supplies: Isolated gate drive signal transmission in AC-DC converters

On-Board Chargers (OBC) and DC-DC Converters: High-voltage isolated communication for electric vehicles

Traction Inverters and Motor Control: Power systems with high noise immunity requirements

Battery Management Systems (BMS): Ensures safe monitoring communication for high-voltage battery packs

Supply and Recycling Services

Mingjiada Electronics provides long-term global supply and recycling services for the 4DIR1400H:

Supply Services

Guaranteed genuine OEM products with traceable sourcing

Support for small-batch samples and large-volume orders

Recycling Services

Mingjiada Electronics offers long-term, high-value recycling of various digital isolators and isolation chips, covering brands such as Infineon, ADI, TI, and ST. The recycling process is as follows:

Customers submit an inventory list (including model numbers, brands, quantities, production dates, and other information)

Mingjiada’s professional team provides an evaluation and quote within 24 hours

After both parties reach an agreement, specific transaction methods are negotiated to complete the delivery

Recycling Contact Email: sales@hkmjd.com

Summary

The Infineon ISOFACE™ 4DIR1400H four-channel digital isolator provides a safe and reliable isolation solution for industrial and automotive high-voltage applications, featuring a 3+1 channel configuration, 5700 Vrms reinforced insulation, 100 kV/µs high CMTI, and 26 ns precise timing. As a professional electronic component supplier and recycling service provider, Mingjiada Electronics is committed to providing customers with genuine 4DIR1400H products, while offering fair and transparent recycling services for customers needing to manage their inventory. For purchasing or recycling inquiries, please contact the Mingjiada Electronics sales team via our official website (www.hkmjd.com) or email.