1 Features
• 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
• 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 (17-ns typical)
• Fast rise and fall times (3.5-ns and 6-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

2 Applications
• Switched-mode power supplies (SMPS)
• Power factor correction (PFC) circuits
• DC/DC Converter
• Motor drives
• Solar power supplies
• Pulse transformer driver

3 Description
The UCC27624 is a dual-channel, high-speed, lowside
gate driver that effectively drives MOSFET,
IGBT, SiC, and GaN power switches. UCC27624
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
UCC27624'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 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 UCC27624'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 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.