Description

Digital Isolators Dual-Channel Isolators with Integrated DC-to-DC Converter (1/1 Channel Directionality)

The ADuM6210 / ADuM6211 / ADuM6212 represent dual-channel digital isolators featuring isoPower, an integrated, isolated dc-to-dc converter. Leveraging Analog Devices, Inc.'s iCoupler technology, the dc-to-dc converter delivers regulated, isolated power with an adjustable range between 3.135 V and 5.25 V. These isolators accommodate input supply voltages ranging from slightly below the required output to significantly higher values, as detailed in Table 2 for popular voltage combinations and their corresponding power levels.

In low-power, isolated designs, the ADuM6210 / ADuM6211 / ADuM6212 negate the necessity for a separate, isolated dc-to-dc converter. The iCoupler chip-scale transformer technology is utilized for both isolated logic signals and the magnetic components of the dc-to-dc converter. The outcome is a compact, all-encompassing isolation solution.

isoPower employs high-frequency switching elements to transfer power through its transformer. Careful attention must be given to printed circuit board (PCB) layout to meet emissions standards. Refer to the AN-0971 Application Note for recommended board layout practices.

Features and Benefits:

• isoPower integrated, isolated dc-to-dc converter
• Regulated 3.135 V to 5.25 V output
• Up to 150 mW output power
• Dual dc-to-100 Mbps (NRZ) signal isolation channels
• Soft start power supply
• 20-lead SSOP package with 5.3 mm creepage
• Supports SPI up to 15 MHz
• High temperature operation: 105°C
• High common-mode transient immunity: >25 kV/μs
• Safety and regulatory approvals
• UL recognition
  
  • 3750 V rms for 1 minute per UL 1577
• CSA Component Acceptance Notice 5A
• VDE certificate of conformity
  
  • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
  • VIORM = 849 V peak

Applications:

• RS-232 transceivers
• Power supply start-up bias and gate drives
• Isolated sensor interfaces
• Industrial PLCs