Data Sheet TLE6284G

1

2006-01-30

H-Bridge Driver IC

Features

• Compatible to very low ohmic normal

level input N-Channel MOSFETs

• PWM – DIR - Interface

• PWM frequency up to 50kHz

• Operates down to 7.5 V

supply voltage

• Low EMC sensitivity and emission

• Adjustable dead time with shoot through protection

• Deactivation of dead time and shoot through protection possible

• Short circuit protection for each Mosfet can be disabled and adjusted

• Driver undervoltage shut down

• Reverse polarity protection for the driver IC

• Fast disable function / Inhibit for low quiescent current

• Input with TTL characteristics

• 2 bit diagnosis

• Thermal overload warning for driver IC

• Shoot through protection

• Integrated bootstrap diodes

Application

• Dedicated for DC-brush high current motor bridges in PWM control mode for 12, 24 and 42V powernet applica-

tions.

• The input structure allows an easy control of a DC-brush motor

General Description

H-bridge driver IC for MOSFET power stages with multiple protection functions.

The TLE6184G is very similar to the TLE6281G. The major difference is that the Short Circuit protection level of

the TLE6284G can be adjusted by external resistors or even disabled. The pin outs are different as well.

Block Diagram

Input control

Dead time

Undervoltage

Short circuit Detect.

Overtemp. warning

OR

INH

Charge Pump

Level

Shift

Floating LS Driver 1

+

V

+

Short circuit

detect.

+

Undervoltage

Linear

Regulator

Undervoltage HSx

Undervoltage LSx

HS1

LS2

HS2

LS1

V

S

GND

DT/DIS

ER1

BH1

BH2

SH1

GH1

DH1

GH2

DH2

GL1

SH2

GL2

DL1

DL2

Floating LS Driver 2

+

V

+

Short circuit

detect.

+

Undervoltage

Floating HS Driver 2

+

V

+

Short circuit

detect.

+

Undervoltage

Floating HS Driver 1

+

V

+

Short circuit

detect.

+

Undervoltage

SCD

SCD

SCD

SCD

Short Circuit Detection

PWM

DIR

INH

ER2

T

Product Summary

Turn on current

850

mA

Turn off current

580

mA

Supply voltage range

7.5 … 60

V

Gate Voltage

10

V

Temperature range

-40...+150

°C

P-DSO-20