MP27942GY: 6-Channel Digital Isolator With 5kV Isolation Strength
MPS: High-Performance & Compact Form Factor
With the MP27942GY, Monolithic Power Systems (MPS) introduces a highly integrated six-channel digital isolator specifically designed for high-speed digital interfaces and use in demanding industrial environments. The device features a total of six channels - four forward and two reverse channels - and supports data rates of up to 150Mbit/s while providing galvanic isolation of 5kVrms.
Download DatasheetSuitable for Harsh Industrial Environments
The MP27942 is ideally suited for applications where digital signals must be transmitted reliably while maintaining galvanic isolation, such as SPI, UART, or GPIO interfaces. Thanks to the high integration of six channels within a single package, the required PCB area is significantly reduced, enabling efficient replacement of traditional optocoupler solutions. In particular, in harsh industrial environments with high levels of interference - such as motor controls or inverters - the IC delivers outstanding performance, featuring a typical common-mode transient immunity (CMTI) of 100kV/µs.
Advantages of Digital Isolators
Digital isolators offer an exceptionally long service life, as capacitive isolation technology is inherently robust and does not suffer from the aging effects associated with optical transmission. In optocouplers, the LED gradually degrades over time, resulting in reduced light output at a constant drive current and a corresponding decline in the current transfer ratio (CTR). More information about digital isolators.
Integrated Failsafe Function
In addition, the MP27942 features an integrated failsafe function that ensures a defined and safe default state. If the input signal is undefined or if the input-side power supply is missing, the device automatically drives the output to a predefined level:
- MP27942GY: high level
- MP27942-LGY: low level
This guarantees a safe and predictable system state even under various fault conditions.
Main Features of the MP27942
- Isolation voltage: 5kVrms
- > 8mm clearance and creepage distance
- Data rate: up to 150Mbit/s
- Supply voltage: 2.5V-5.5V, compatible with 3.3V and 5V logic levels
- Temperature range: -40°C to +125°C
- SOIC-16 housing (wide body)
- DIN EN IEC 60747-17 (VDE 0884-17): 2021-10 certified: 7071 VPK Insulation
- CB certificate according to IEC 62368-1 3rd edition
- CMTI >100kV/µs
Applications
- Industrial control systems: Signal and bus interfaces (e.g. SPI, I²C, UART)
- Medical devices
- Power measurement and motor control
- Galvanically isolated communication: Ideal for interference-free communication between microcontrollers and power electronics
- Applications with high EMC or overvoltage requirements
Supplementary Power Supply
The MIE1W0505BGY DC/DC converter is recommended for applications with low current requirements on the isolated side. It delivers up to 1W in a SOIC 16 housing with 5kVrms isolation.
Why is the Digital Isolator MP27942 Highly Efficient?
The MP27942 combines high data rates, robust galvanic isolation, and a compact form factor, making it a powerful alternative to traditional optocouplers. Designers benefit from significantly simplified circuit design as well as high reliability throughout the device’s lifetime.
Your Contact Person
For more information and samples of the MP27942, please contact Thomas Merkel.
