onsemi NCP51561 isolated gate driver

The NCP51561 are isolated dual-channel gate drivers with 4.5-A/9-A source and sink peak current respectively. They are designed for fast switching applications to drive silicon and SiC MOSFETs. The NCP51561 offers short and matched propagation delays.

Two independent and 5 kVRMS (UL1577 rating) galvanically isolated gate driver channels can be used in any possible configurations of two low side, two high-side switches or a half-bridge driver with programmable dead time. The NCP51561 offers other important protection functions such as independent under-voltage lockout for both gate drivers and enable function.

Key features

• 4.5-A Peak Source, 9-A Peak Sink Output Current Capability
• Output Supply Voltage from 6.5 V to 30 V with 5-V, 8-V, and 17-V UVLO threshold.
• Propagation Delay Typical 36 ns with 8 ns Max Delay Matching per channel
• Common Mode Transient Immunity CMTI > 200 V/ns

Additional features

• User Programmable Input Logic for Single or Dual-input modes via ANB
• 5 kVRMS Galvanic Isolation from input to each output & 1200 V peak differential voltage between output channels
• User Programmable Dead-Time
• Enable or Disable pin

Applications

• Industrial Drives
• Motor Drives
• UPS
• Server & Telecom Power supply / bricks
• High Power DC/DC converters
• Isolated Converters in DC-DC and AC-DC Power Supply