UCC27524D.B中文资料德州仪器数据手册PDF规格书

1 Features

• Industry-standard pin out

• Two independent gate-drive channels

• 5A peak source and sink-drive current

• Independent-enable function for each output

• TTL and CMOS compatible logic threshold

independent of supply voltage

• Hysteretic-logic thresholds for high noise immunity

• Ability to handle negative voltages (–5V) at inputs

• Inputs and enable pin-voltage levels not restricted

by VDD pin bias supply voltage

• 4.5V to 18V single-supply range

• Outputs held low during VDD-UVLO (ensures

glitch-free operation at power up and power down)

• Fast propagation delays (17ns typical)

• Fast rise and fall times (6ns and 10ns typical)

• 1ns typical delay matching between two channels

• Two outputs are paralleled for higher drive current

• Outputs held in low when inputs floating

• SOIC-8, HVSSOP-8 PowerPAD™ package options

• Operating junction temperature range of –40 to

150°C

2 Applications

• Switch-mode power supplies

• DC-to-DC converters

• Motor control, solar power

• Gate drive for emerging wide band-gap power

devices such as GaN

3 Description

The UCC27524 device is a dual-channel, high-speed,

low-side, gate-driver device capable of effectively

driving MOSFET and IGBT power switches. The

UCC27524 adds the ability to handle –5V directly

at the input pins for increased robustness. The

UCC27524 is a dual non-inverting driver. Using

a design that inherently minimizes shoot-through

current, the UCC27524 is capable of delivering

high-peak current pulses of up to 5A source and

5A sink into capacitive loads along with rail-to-rail

drive capability and extremely small propagation

delay typically 17ns. In addition, the drivers feature

matched internal propagation delays between the two

channels which are very well suited for applications

requiring dual-gate drives with critical timing, such as

synchronous rectifiers. This also enables connecting

two channels in parallel to effectively increase currentdrive

capability or driving two switches in parallel

with a single input signal. The input pin thresholds

are based on TTL and CMOS compatible low-voltage

logic, which is fixed and independent of the VDD

supply voltage. Wide hysteresis between the high and

low thresholds offers excellent noise immunity.