5-A/5-A dual-channel gate driver with 5-V UVLO, enable, and dual TTL inputs

The UCC2752x family of devices are

dual-channel, high-speed, low-side gate-driver devices capable of effectively

driving MOSFET and IGBT power switches. Using a design that inherently minimizes

shoot-through current, UCC2752x can deliver 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 13ns). In addition, the drivers

feature matched internal propagation delays between the two channels. These delays

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 current-drive capability or driving two switches in

parallel with one 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.

The UCC2752x family provides the combination of

three standard logic options — dual inverting,

dual noninverting, one inverting and one

noninverting driver. The UCC27526 features a dual

input design which offers flexibility of both

inverting (IN– pin) and non-inverting (IN+ pin)

configuration for each channel. Either IN+ or IN–

pin controls the state of the driver output. The

unused input pin is used for enable and disable

functions. For safety purpose, internal pullup and

pulldown resistors on the input pins of all the

devices in UCC2752x family ensure that outputs are

held LOW when input pins are in floating

condition. The UCC27523 and UCC27525 devices

feature Enable pins (ENA and ENB) to have better

control of the operation of the driver

applications. The pins are internally pulled up to

VDD for active-high logic and are left open for

standard operation.

The UCC2752x family of devices are available in

SOIC-8 (D), MSOP-8 with exposed pad (DGN) and 3mm

× 3mm WSON-8 with exposed pad (DSD) packages. The

UCC27526 is only offered in a 3mm × 3mm WSON (DSD)

package.