ایزولاتور ایزولاتور- درایور گیت

Product Attributes

Introduction

The ADuM4121/ADuM4121-1 are 2 A isolated, single-channel drivers that employ iCoupler technology to provide precision isolation. The ADuM4121/ADuM4121-1 provide 5 kV rms isolation in the wide-body, 8-lead SOIC package. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as the combination of pulse transformers and gate drivers. The ADuM4121/ADuM4121-1 operate with an input supply ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers that employ high voltage level translation methodologies, the ADuM4121/ ADuM4121-1 offer the benefit of true, galvanic isolation between the input and the output. The ADuM4121/ADuM4121-1 include an internal Miller clamp that activates at 2 V on the falling edge of the gate drive output, supplying the driven gate with a lower impedance path to reduce the chance of Miller capacitance induced turn on. Options exists to allow the thermal shutdown to be enabled or disabled. As a result, the ADuM4121/ADuM4121-1 provide reliable control over the switching characteristics of insulated gate bipolar transistor (IGBT)/metal oxide semiconductor field, effect transistor (MOSFET) configurations over a wide range of switching voltages.

Features

• 2 A peak output current (<2 Ω RDSON)
• 2.5 V to 6.5 V input
• 4.5 V to 35 V output
• Undervoltage lockout (UVLO) at 2.5 V VDD1
• Multiple UVLO options on VDD2 Grade A: 4.4 V (typical) UVLO on VDD2 Grade B: 7.3 V (typical) UVLO on VDD2 Grade C: 11.3 V (typical) UVLO on VDD2
• Precise timing characteristics 53 ns maximum isolator and driver propagation delay
• CMOS input logic levels
• High common-mode transient immunity: >150 kV/μs
• High junction temperature operation: 125°C
• Default low output
• Internal Miller clamp
• Safety and regulatory approvals (pending) UL recognition per UL 1577 5 kV rms for 1-minute withstand CSA Component Acceptance Notice 5A VDE certificate of conformity (pending) DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 Vpeak = 849 V
• Wide-body, 8-lead SOIC

Applications

• Switching power supplies
• Isolated IGBT/MOSFET gate drives
• Industrial inverters
• Gallium nitride (GaN)/silicon carbide (SiC) power devices