UCC27624QDRQ1

The UCC27624-Q1 is a dual-channel, high-speed, low-side gate driver that effectively drives MOSFET, IGBT, SiC, and GaN power switches. UCC27624-Q1 has a typical peak drive strength of 5 A, which reduces rise and fall times of the power switches, lowers switching losses, and increases efficiency. The device's fast propagation delay (17-ns typical) yields better power stage efficiency by improving the deadtime optimization, pulse width utilization, control loop response, and transient performance of the system. UCC27624-Q1 can handle -10 V at its inputs, which improves robustness in systems with moderate ground bouncing. The inputs are independent of supply voltage and can be connected to most controller outputs for maximum control flexibility. An independent enable signal allows the power stage to be controlled independently of main control logic. In the event of a system fault, the gate driver can quickly shut-off by pulling enable low. Many high-frequency switching power supplies exhibit noise at the gate of the power device, which can get injected into the output pin on the gate driver and can cause the driver to malfunction. The device's transient reverse current and reverse voltage capability allow it to tolerate noise on the gate of the power device or pulse-transformer and avoid driver malfunction. The UCC27624-Q1 also features undervoltage lockout (UVLO) for improved system robustness. When there is not enough bias voltage to fully enhance the power device, the gate driver output is held low by the strong internal pull down MOSFET.

Applications

• Automotive DC/DC Converters
• Switched-mode power supplies (SMPS)
• Power factor correction (PFC) circuits
• DC/DC converter
• Motor drives
• Solar power supplies
• Pulse transformer driver

Key features

• Qualified for Automotive Applications
• AEC-Q100 Qualified Device Temperature Grade 1
• Device HBM ESD Classification Level H1C
• Device CDM ESD Classification Level C6
• Typical 5-A peak source and sink drive current for each channel
• Input and enable pins capable of handling -10 V
• Output capable of handling -2-V transients
• Absolute maximum VDD voltage: 30 V
• Wide VDD operating range from 4.5 V to 26 V with UVLO
• Hysteretic-logic thresholds for high noise immunity
• VDD independent input thresholds (TTL compatible)
• Fast propagation delays (17-ns typical)
• Fast rise and fall times (6-ns and 10-ns typical)
• 1-ns typical delay matching between the two channels
• Two channels can be paralleled for higher drive current
• SOIC8 and VSSOP8 PowerPAD package options
• Operating junction temperature range of -40°C to 150°C