1

ENA

500 kW

2

INA

465 kW

3

GND

4

INB

465 kW

UVLO

V

DD

8

7

6

5

ENB

OUTA

VDD

OUTB

500 kW

UCC27527, UCC27528

www.ti.com

SLUSBD0E – JUNE 2013 – REVISED DECEMBER 2014

8 Detailed Description

8.1 Overview

The UCC2752x family of products represent Texas Instruments’ latest generation of dual-channel, low-side high-

speed gate driver devices featuring 5-A source/sink current capability, industry best-in-class switching

characteristics and a host of other features listed in table below all of which combine to provide efficient, robust,

and reliable operation in high-frequency switching power circuits.

Table 1. UCC27527 and UCC27528 Features and Benefits

FEATURE

BENEFIT

Best-in-class 13-ns (typ) propagation delay

Extremely low pulse transmission distortion

1-ns (typ) delay matching between channels

Ease of paralleling outputs for higher (2x) current capability, ease of

driving parallel power switches

Expanded VDD Operating range of 4.5 V to 18 V

Flexibility in system design

Expanded operating temperature range of -40 °C to 140 °C

(See Electrical Characteristics table)

VDD UVLO Protection

Outputs are held Low in UVLO condition, which ensures predictable,

glitch-free operation at power-up and power-down

Outputs held Low when input pins (INx) in floating condition

Safety feature, especially useful in passing abnormal condition tests

during safety certification

Outputs enabled when enable pins (ENx) in floating condition

Pin-to-pin compatibility with UCC2732X family of products from TI, in

designs where pin #1, 8 are in floating condition

CMOS input threshold logic

Enhanced noise immunity, higher threshold level and wider

hysteresis which is a function of VDD supply voltage and ability to

employ RCD delay circuits on input pins.

Ability of input and enable pins to handle voltage levels not restricted System simplification, especially related to auxiliary bias supply

by VDD pin bias voltage

architecture

8.2 Functional Block Diagram

Figure 22. UCC27528 Block Diagram

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Product Folder Links: UCC27527 UCC27528