Data Sheet, Rev 1.1, Sept. 2010
TLE7181EM
H-Bridge and Dual Half Bridge Driver IC
Automotive Power
H-Bridge and Dual Half Bridge Driver IC
TLE7181EM
Table of Contents
Table of Contents
1
2
3
3.1
3.2
4
4.1
4.2
4.3
4.4
5
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.3
5.3.1
6
6.1
6.2
7
8
Overview
3
Block Diagram
4
Pin Configuration
5
Pin Assignment 5
Pin Definitions and Functions 5
General Product Characteristics
7
Absolute Maximum Ratings 7
Functional Range 8
Thermal Resistance 9
Default State of Inputs 9
Description and Electrical Characteristics
10
MOSFET Driver 10
Driving MOSFET Output Stages 10
MOSFET Output Stages 10
Dead Time 11
Bootstrap Principle 11
100% D.C. charge pumps 12
Reverse polarity protection of motor bridge 12
Sleep mode 12
Wake up 12
Electrical Characteristics 13
Protection and Diagnostic Functions 17
State diagram of different operation modes 17
Short Circuit Protection 18
SCDL Pin Open Detection 18
Vs and VDH Over Voltage Warning 18
VS Under Voltage Shutdown 18
VREG Under Voltage Warning 18
Over Temperature Warning 19
Over Current Warning 19
Passive Gxx Clamping 19
ERR Pin 19
Electrical Characteristics 21
Shunt Signal Conditioning 23
Electrical Characteristics 23
Application Information
25
Layout Guide Lines 26
Further Application Information 26
Package Outlines
27
Revision History
28
Data Sheet
2
Rev 1.1, 2010-09-30
TLE7181EM
H-Bridge and Dual Half Bridge Driver IC
1
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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Overview
PWM/DIR-interface drives 4 N-Channel Power MOSFETs
Unlimited D.C. switch on time of Low and Highside MOSFETs
0 …95% at 20kHz & 100% Duty cycle of High Side MOSFETs
0 ... 100 % Duty cycle of Low Side MOSFETs
Additional output to drive a reverse polarity protection N-MOSFET
Current sense OPAMP
Low quiescent current mode
Internal shoot through protection
PG-SSOP-24
Adjustable dead time
1 bit diagnosis / ERR
Over current warning based on current sense OPAMP with fixed warning level
Analog adjustable Short Circuit Protection levels via SCDL pin with open pin detection
Over temperature warning
Over voltage warning
Under voltage warning and shutdown
Green Product (RoHS compliant)
AEC Qualified
Description
The TLE7181EM is a H-bridge driver IC dedicated to control 4 N-channel MOSFETs typically forming the converter
for a high current DC motor drives in the automotive sector. It incorporates several protection features such as
over current and short circuit detection as well as under-, over voltage and over temperature diagnosis.
Typical applications are fans, pumps and electric power steering. The TLE7181EM is designed for a 12V power
net.
Table 1
Product Summary
Specified operating voltage
Junction temperature
Maximum output source resistance
Maximum output sink resistance
maximum quiescent current
1)
1) typical value at
T
j
=25°C
C
V
SOP
T
j
R
Sou
R
Sink
I
QVS
7.0 V … 34 V
-40 °C .. 150°C
13.5
Ω
9
Ω
8 µA
Type
TLE7181EM
Data Sheet
Package
PG-SSOP-24
3
Marking
TLE7181EM
Rev 1.1, 2010-09-30
H-Bridge and Dual Half Bridge Driver IC
TLE7181EM
Block Diagram
2
Block Diagram
VS
VREG
Charge
pump
HS2
Charge
pump
HS1
RPP
RPP
VDH
BH1
VREG
Floating HS driver
Short circuit detection
GH1
SH1
____
ERR
SCDL
Diagnostic logic
Under voltage
Over voltage
Over current
Overtemperature
Short circuit
Reset
L
E
V
E
L
S
H
I
F
T
E
R
Floating LS driver
Short circuit detection
GL1
ENA
BH2
Floating HS driver
Short circuit detection
GH2
SH2
DRV
DIS
DT
PWM
DIR
Input control
dead time
Floating LS driver
Short circuit detection
GL2
SL
ISO
ISP
ISN
Shunt signal conditioning
Over current detection
GND
Figure 1
Block diagram TLE7181EM
Data Sheet
4
Rev 1.1, 2010-09-30
H-Bridge and Dual Half Bridge Driver IC
TLE7181EM
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment
BH2
GH2
SH2
GL2
VDH
RPP
Vs
VREG
ENA
ISN
ISP
ISO
Figure 2
Pin Configuration
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
BH1
GH1
SH1
GL1
SL
GND
SCDL
___
ERR
DIR
PWM
DRVDIS
DT
3.2
# of
Pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Definitions and Functions
Symbol
BH2
GH2
SH2
GL2
VDH
RPP
VS
VREG
ENA
ISN
ISP
ISO
DT
DRVDIS
PWM
DIR
Function
Pin for + terminal of the bootstrap capacitor of phase 2
Output pin for gate of high side MOSFET 2
Pin for source connection of high side MOSFET 2
Output pin for gate of low side MOSFET 2
Voltage input common drain high side for short circuit detection
charge pump output for reverse polarity protection of the motor bridge
Pin for supply voltage
Output of supply for driver output stage - connect to a capacitor
Input pin for reset of ERR registers, active switch off of external MOSFETs and low
quiescent current mode, set HIGH to enable operation
Input for OPAMP + terminal
Input for OPAMP - terminal
Output of OPAMP
Input for adjustable dead time function, connect to GND via resistor
Disable DIR/PWM interface & all output stages switched off
control input for PWM frequency and duty cycle
control input for spinning direction of the motor
5
Rev 1.1, 2010-09-30
Data Sheet