IRS21844STRPBF-JSM

The IRS21844S is a high-voltage, high-speed power MOSFET/IGBT high- and low-side gate driver IC featuring separate logic ground and power ground to better reduce power-stage noise interference on logic circuits. Dead time is flexibly configurable via external resistors. The device integrates protection circuits including high- and low-side UVLO and overvoltage clamp circuits, and features high-current pulse output capability. Logic input levels are compatible with CMOS or LSTTL logic outputs down to 3.3V, with a maximum output current of 4A and a floating channel maximum operating voltage of 700V. Suitable for driving N-channel high-voltage power MOSFETs/IGBTs and similar devices. The IRS21844S is available in a SOP-14 package and operates over a temperature range of -40°C to 125°C.

Applications

• General-purpose inverters
• Half-bridge and full-bridge converters in AC and DC power supplies
• High-density switching power supplies for server, telecom, and industrial infrastructure
• Solar inverters, motor drives, and UPS

Key features

• Floating channel for bootstrap operation
• Maximum operating voltage 700V
• Compatible with 3.3V and 5V input logic
• Single input (IN) dual output logic
• Shutdown input logic disables both high- and low-side outputs simultaneously
• Dead time adjustable via external resistor (RDT):
• DT = 400ns@RDT = 0
• DT = 5μs@RDT = 200kΩ
• dV/dt immunity
• Gate drive voltage: 10V to 20V
• High- and low-side UVLO
• UVLO positive threshold 8.9V
• UVLO negative threshold 8.2V
• High- and low-side propagation delay matching
• Logic ground isolated from power ground
• Drive current capability:
• Source/Sink = 4A/4A
• RoHS compliant
• SOP-14 package