ISOW7741-Q1 Automotive Quad-Channel 3/1 Reinforced Digital Isolator

Texas Instruments’ isolator features an integrated low-emission, low-noise DC/DC converter

Texas Instruments’ ISOW7741-Q1 is a galvanically-isolated quad-channel digital isolator with an integrated high-efficiency power converter with low emissions. The integrated DC/DC converter provides up to 550 mW of isolated power, eliminating the need for a separate isolated power supply in space-constrained isolated designs.

Features

• AEC-Q100-qualified for automotive applications:
  • Ambient temperature range Grade 1: -40°C to +125°C
• Data rate: 100 Mbps
• Integrated DC/DC converter with low emissions and low noise:
  • Emission-optimized to meet CISPR25
  • Low-frequency power converter: 25 MHz enables low-noise performance
  • Low output ripple: 24 mV
• High-efficiency output power:
  • Efficiency at max. load: 46%
  • Output power: up to 0.55 W
  • V_ISOOUT accuracy: 5%
  • 5 V to 5 V available load current: 110 mA (max.)
  • 5 V to 3.3 V available load current: 140 mA (max.)
  • 3.3 V to 3.3 V available load current: 60 mA (max.)

• Independent power supply for a channel isolator and power converter:
  • Logic supply range (V_IO): 1.71 V to 5.5 V
  • Power converter supply range (V_DD): 3 V to 5.5 V
• Robust electromagnetic compatibility (EMC):
  • System-level ESD, EFT, and surge immunity
  • IEC 61000-4-2 contact discharge protection: ±8 kV across the isolation barrier
• Reinforced and basic isolation options
• High CMTI: 100 kV/µs (typ.)
• Safety-related certifications:
  • VDE reinforced and basic insulation per DIN EN IEC 60747-17 (VDE 0884-17)
  • UL 1577 component recognition program
  • IEC 62368-1, IEC 61010-1, IEC 60601-1, and GB 4943.1-2011
  • ISOW774xB devices are planned
• Extended temperature range: -40°C to +125°C
• Package: 20-pin wide-body SOIC

Applications

• Hybrid, electric, and powertrain systems (EV/HEV):
  • Battery management systems (BMS)
  • Onboard chargers (OBC)
  • Traction inverters
  • DC/DC converters