SL27517A

SL27517A is a 4A symmetric drive, single-channel, high-speed low-side gate driver capable of effectively and safely driving MOSFETs, IGBTs, and emerging WBG power switches. Its low propagation delay and compact SOT-23 package support fast switching frequencies of hundreds of kHz. This driver is ideally suited for synchronous rectification drive applications in server and telecom power supplies, where dead-time accuracy of the synchronous MOSFET directly impacts converter efficiency. Its wide VDD operating range (4.5V to 20V) enables effective driving of MOSFETs or GaN power switches. Integrated UVLO protection ensures the output remains low under abnormal conditions. The dedicated input pin supports a voltage range of -5V to 20V, ensuring stable operation under undershoot or overshoot conditions caused by parasitic inductance. Its input threshold is compatible with TTL logic input levels.

Applications

• Power Tools
• Motor Control
• AC/DC and DC/DC Converters
• Server and Telecom Rectifiers
• EV/HEV Inverters and DC/DC Converters

Key features

• 5-pin SOT-23 package option
• 4A peak source and 4A peak sink drive current
• Wide VDD operating range up to 24V, operating voltage 4.5V to 20V with UVLO protection
• Dual inputs, supports non-inverting or inverting input; unused input can serve as enable/disable control
• Capable of handling negative voltage (-5V) input
• Compatible with TTL and CMOS logic input levels
• Low propagation delay (typically less than 20ns)
• Output remains low when input is floating
• Operating temperature range: -40℃ ~ 125℃