Datasheet

UCC27210

UCC27211

SLUSAT7E –NOVEMBER 2011 –REVISED AUGUST 2013

www.ti.com

APPLICATION INFORMATION

Functional Description

The UCC27210/11 represent Texas Instruments’ latest generation of high voltage gate drivers which are

designed to drive both the high-side and low-side of N-Channel MOSFETs in a half-/full-bridge or synchronous

buck configuration. The floating high-side driver is capable of operating with supply voltages of up to 120 V. This

allows for N-Channel MOSFET control in half-bridge, full-bridge, push pull, two-switch forward and active clamp

forward converters.

The UCC27210/11 feature 4-A source/sink capability, industry best-in-class switching characteristics and a host

of other features listed in the table below. These features combine to ensure efficient, robust and reliable

operation in high-frequency switching power circuits.

Table 1. UCC27210/11 Highlights

FEATURE BENEFIT

High peak current ideal for driving large power MOSFETs with

4-A source and sink current with 0.9-Ω output resistance

minimal power loss (fast-drive capability at Miller plateau)

Increased robustness and ability to handle under/overshoot. Can

Input pins (HI and LI) can directly handle -10 VDC up to 20 VDC interface directly to gate-drive transformers without having to use

rectification diodes

120-V internal boot diode Provides voltage margin to meet telecom 100-V surge requirements

Allows the high-side channel to have extra protection from inherent

Switch node (HS pin) able to handle -18 V maximum for 100 ns negative voltages caused parasitic inductance and stray

capacitance.

Robust ESD circuitry to handle voltage spikes Excellent immunity to large dV/dT conditions

Best-in-class switching characteristics and extremely low-pulse

18-ns propagation delay with 7.2-ns / 5.5-ns rise/fall Times

transmission distortion

2-ns (typ) delay matching between channels Avoids transformer volt-second offset in bridge

Symmetrical UVLO circuit Ensures high-side and low-side shut down at the same time

CMOS optimized threshold or TTL optimized thresholds with Complementary to analog or digital PWM controllers. Increased

increased hysteresis hysteresis offers added noise immunity

In UCC27210/11, the high side and low side each have independent inputs which allow maximum flexibility of

input control signals in the application. The boot diode for the high-side driver bias supply is internal to the

UCC27210 and UCC27211. The UCC27210 is the Pseudo-CMOS compatible input version and the UCC27211

is the TTL or logic compatible version. The high-side driver is referenced to the switch node (HS) which is

typically the source pin of the high-side MOSFET and drain pin of the low-side MOSFET. The low-side driver is

referenced to V

which is typically ground. The functions contained are the input stages, UVLO protection, level

shift, boot diode, and output driver stages.

Product Folder Links: UCC27210 UCC27211