1 Features

• Qualified for automotive applications

• AEC-Q100 qualified with the following results:

– Device temperature grade 1: –40°C to +125°C

ambient Operating Temperature Range

– Device HBM ESD classification level H2

– Device CDM ESD classification level C4B

• Industry-standard pin-out

• Typical 9-A sink, 9-A source output currents

• Input pin capable of withstanding up to –5 V

• Absolute maximum VDD voltage: 20 V

• Wide VDD operating range from 4.5 V to 18 V

• Available in 3-mm x 3-mm MSOP8 package

• Typical 25-ns propagation delay

• TTL compatible input thresholds

• Operating junction temperature range of –40°C to

125°C

2 Applications

• Automotive DC/DC converter

• Automotive on-board charger (OBC)

• Telecom switch mode power supplies

• Power factor correction (PFC) circuits

• Solar power supplies

• Motor drives

• High frequency line drivers

• Pulse transformer drivers

• High power buffers

3 Description

The UCC27332-Q1 is a single channel, high-speed,

low-side gate driver capable of effectively driving

MOSFET and GaN power switches. UCC27332-Q1

has a typical peak drive strength of 9-A, which

reduces the rise and fall times of the power switches,

lowering switching losses and increasing efficiency.

The UCC27332-Q1 device's small propagation delay

yields better power stage efficiency by improving

the dead time optimization, pulse width utilization,

control loop response, and transient performance of

the system.

UCC27332-Q1 can handle –5-V on its input, which

improves robustness in systems with moderate

ground bouncing. An independent enable signal

allows the power stage to be controlled independent

of the main control logic. The gate driver can quickly

shut off the power stage if there is a fault in

the system (which requires the power train to be

turned-off). The enable function also improves system

robustness. Many high-frequency switching power

supplies exhibit high frequency noise at the gate of

the power device, which can get injected into the

output pin of the gate driver and can cause the driver

to malfunction. The UCC27332-Q1 performs well in

such conditions due to its transient reverse current

and reverse voltage capability.

The strong internal pulldown MOSFET holds the

output low if the VDD voltage is below the specified

power on reset threshold. This active pulldown feature

further improves system robustness. The small 3-

mm×3mm MSOP package enables optimum gate

driver placement and inproved layout. This small

package also enables optimum gate driver placement

and improved layout.