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Product Attributes

Introduction

The ADuM3220/ADuM3221 are isolated, 4 A dual-channel gate drivers based on iCoupler technology. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to the alternatives, such as the combination of pulse transformers and gate drivers. The ADuM3220/ADuM3221 provide digital isolation in two independent isolation channels. They have a maximum propagation delay of 60 ns and 5 ns channel-to-channel matching. In comparison to gate drivers that employ high voltage level translation methodologies, the ADuM3220/ADuM3221 offer the benefit of true, galvanic isolation between the input and each output, enabling voltage translation across the isolation barrier. The ADuM3220 has shoot-through protection logic, which prevents both outputs from being on at the same time, whereas the ADuM3221 allows both outputs to be on at the same time. Both parts offer a default output low characteristic as required for gate drive applications. The ADuM3220/ADuM3221 operate with an input supply voltage ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems. The outputs of the ADuM3220A/ADuM3221A can be operated at supply voltages from 4.5 V to 18 V. The outputs of the ADuM3220B/ADuM3221B can be operated at supply voltages from 7.6 V to 18 V. The junction temperature of the ADuM3220/ADuM3221 is specified from -40°C to +125°C.

Features

• 4 A peak output current
• Precise timing characteristics 60 ns maximum isolator and driver propagation delay 5 ns maximum channel-to-channel matching
• High junction temperature operation: 125°C
• 3.3 V to 5 V input logic
• 4.5 V to 18 V output drive
• UVLO at 2.5 V VDD1 ADuM3220A/ADuM3221A UVLO at 4.1 V VDD2 ADuM3220B/ADuM3221B UVLO at 7.0 V VDD2
• Thermal shutdown protection at >150°C
• Output shoot-through logic protection on the ADuM3220
• Default low output
• High frequency operation: dc to 1 MHz
• CMOS input logic levels
• High common-mode transient immunity: >25 kV/μs
• Enhanced system-level ESD performance per IEC 61000-4-x
• Safety and regulatory approvals UL recognition 2500 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 V10RM = 560 V peak
• Small footprint and low profile Narrow body, RoHS-compliant, 8-lead SOIC 5 mm×6 mm×1.6 mm
• Qualified for automotive applications

Applications

• Isolated synchronous dc-to-dc converters
• MOSFET/IGBT gate drivers