Texas Instruments UCC27624V/UCC27624V-Q1 Dual-Channel Gate Drivers
Texas Instruments UCC27624V/UCC27624V-Q1 Dual-Channel Gate Drivers effectively drive MOSFET, IGBT, and SiC power switches. UCC27624V has a typical peak drive strength of 5A, which reduces the rise and fall times of the power switches, lowers switching losses, and increases efficiency. The device’s fast propagation delay (17ns typical) yields better power stage efficiency by improving the deadtime optimization, pulse width utilization, control loop response, and transient performance of the system.
The robustness in systems with moderate ground bouncing is improved in the UCC27624V since it can handle -10V at its inputs. The inputs can be connected to most controller outputs for maximum control flexibility and are independent of the supply voltage. The power stage can be controlled independently of the main control logic with an independent enable signal. In a system fault, the gate driver can quickly shut off by pulling the 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 cause the driver to malfunction. The device’s transient reverse voltage and reverse current capability allow it to tolerate noise on the gate of the pulse transformer or power device and avoid driver malfunction.
The UCC27624V also features undervoltage lockout (UVLO) for improved system robustness. When there is not enough bias voltage to fully enhance the power device, the strong internal pull-down MOSFET holds the gate driver output low. The Texas Instruments UCC27624V-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Typical 5A peak source and sink drive current for each channel
- Input and enable pins capable of handling -10V
- Output capable of handling -2V transients
- Absolute maximum VDD voltage of 30V
- Wide VDD operating range from 9.5V to 26V with UVLO
- Two independent gate drive channels
- Independent enable function for each output
- Hysteretic-logic thresholds for high noise immunity
- VDD independent input thresholds (TTL compatible)
- Fast propagation delays (17ns typical)
- Fast rise and fall times (6ns and 10ns typical)
- 1ns typical delay matching between the two channels
- Two channels can be paralleled for higher drive current
- SOIC-8 and VSSOP-8 PowerPAD™ package options
- Operating junction temperature range of -40°C to 150°C
Applications
- Switched-mode power supplies (SMPS)
- Power factor correction (PFC) circuits
- DC/DC converter
- Motor drives
- Solar power supplies
- Pulse transformer driver
Functional Block Diagram
