WXNSIC NSG21844

NSG21844 is a high-voltage, high-speed power MOSFET/IGBT high- and low-side gate driver IC series, with logic ground isolated from power ground to better reduce power-stage noise interference on logic circuits. Dead time is flexibly configurable via external resistors. Integrated protection features include high- and low-side UVLO, overvoltage clamp circuits, and more. The device offers high-current pulse output capability, with logic input levels compatible with CMOS or LSTTL outputs as low as 3.3V. Peak output current reaches up to 4A, and the floating channel supports a maximum operating voltage of 700V. Suitable for driving N-channel high-voltage power MOSFETs/IGBTs and similar devices.

• Floating channel maximum voltage for bootstrap operation: 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
• Matched propagation delay for high and low side
• Logic ground isolated from power ground
• Drive current capability: source/sink = 4A/4A
• RoHS compliant
• SOP14 package

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