UCC27511ADBVR

UCC27511A is a compact gate driver offering a high-quality replacement for NPN and PNP discrete driver (buffer circuit) solutions. The UCC27511A is a single-channel, low-side, high-speed gate driver for MOSFETs, IGBTs, and emerging wide-bandgap power devices such as GaN. The device features short rise times, fall times, and propagation delays in the off state, making the UCC27511A well-suited for high-speed applications. Its asymmetric 4A peak source current and 8A peak sink current improve immunity to parasitic Miller turn-on effects. The split-output configuration enables independent adjustment of rise and fall times using just two resistors, eliminating the need for an external diode. Additional features including wide input hysteresis and negative input voltage handling further enhance transient noise immunity.

Applications

• Switching power supplies
• DC-DC converters
• Companion gate driver devices for digital power controllers
• Solar, motor control, uninterruptible power supply (UPS)
• Gate drivers for newly introduced wide bandgap power devices (e.g., GaN)

Key features

• Input pins withstand voltages down to –5V below GND
• Low-cost gate driver offering a high-quality alternative to NPN and PNP discrete solutions
• Strong sink current for enhanced Miller turn-on immunity
• Split output configuration for easy, independent adjustment of turn-on and turn-off speeds
• Fast propagation delay (typical 13ns)
• Fast rise and fall times (typical 9ns and 7ns)
• 4.5V to 18V single-supply VDD range
• Output held low during UVLO, ensuring glitch-free operation at power-up and power-down
• TTL and CMOS compatible input logic thresholds, independent of supply voltage
• Wide hysteresis (typical 1V) for high noise immunity
• Dual-input design — select inverting (IN– pin) or non-inverting (IN+ pin) driver configuration
• Unused input pin can be used for enable/disable function
• Output held low when input pins are floating
• Maximum absolute voltage level on input pins is not limited by VDD pin bias supply voltage