ST L6204 User Manual
DMOS DUAL FULL BRIDGE DRIVER
■
SUPPLY VOLTAGE UP TO 48V
■
R
■
CROSS CONDUCTION PROTECTION
■
THERMAL SHUTDOWN
■
0.5A DC CURRENT
■
TTL/CMOS COMPATIBLE DRIVER
■
HIGH EFFICIENCY CHOPPING
■
MULTIPOWER BCD TECHNOLOGY
DESCRIPTION
The L6204 is a dual full bridge driver for motor
control applications realized in BCD technology
which combines isolated DMOS power transistors
with CMOS and Bipolar circuits on the same chip.
By using mixed technology it has been possible to
optimize the logic circuitry and the powe r stage to
achieve the best possible performance.
The logic inputs are TTL/CMOS compatible. Both
channels are controlled by a separate Enable.
1.2Ω L6204 (25°C)
DS(ON)
L6204
MULTOPOWER BCD TECHNOLOGY
Powerdip 16+2+2 SO 24+2+2
ORDERING NUMBERS:
L6204 L6204D
Each bridge has a sense resistor to control the
currenrt lev e l.
The L6204 is mounted in an 20-lead Powerdip and
SO 24+2+2 packages and the four center pins are
used to conduct heat to t he PC B. A t normal operating temperatures no external heatsink is required.
BLOCK DIAGRAM
VBOOT
IN1
ENABLE 1
IN2
BOOTSTRAP
OSCILLATOR
CHARGE
PUMP
Vs1
OUT 1
SENSE 1
OUT 2
THERMAL
SHUT DOWN
GND
Vs2
OUT 3
OUT 4
IN4
ENABLE 2
IN3
SENSE 2
July 2003
1/12
L6204
PIN CONNECTIONS
SENS1
IN1
ENABLE1
OUT1
GND GND
GND
OUT3
ENABLE2
IN3
SENSE2
1
2
3
4
5
6
7
8
9
10 11
20
19
18
17
16
15
14
13
12
DIP20
DIP16+2+2
VBOOT
IN2
OUT2
Vs1
GND
Vs2
OUT4
IN4
VCP
SENSE1
IN1
ENABLE1
N.C.
N.C.
OUT1
GND
GND
OUT3 VS2
N.C. N.C.
N.C.
ENABLE2
IN3 IN4
2
3
4
5
6
7
8
9
10
12
13
SO24+2+2
28
27
26
25
24
23
22
21
20
19
18
17
16
1514SENSE2 VCP
VBOOT1
IN2
OUT2
N.C.
N.C.
VS1
GND
GND
N.C.11
OUT4
SO24+2+2
PIN DESCRIPTION
SO
(*)
DIP
Pin
Symbols Functions
1 1 SENSE 1 Sense resistor to provide the feedback for motor current control of the bridge
A
2 2 IN1 Digital input from the motor controller (bridge A)
3 3 ENABLE 1 A logic level low on this pin disable the bridge A
6 4 OUT 1 Output of one half bridge of the bridge A
7 5 GND Common Power Ground
8 6 GND Common Power Ground
9 7 OUT 3 Ouput of one half bridge of the bridge B
12 8 ENABLE 2 A logic level low on this pin disable the bridge B
13 9 IN 3 Digital input from the motor controller (bridge B)
14 10 SENSE 2
Sense resistor to provide the feedback for motor current control of the bridge B
15 11 BOOSTRAP OSC. VCP Oscillator output for the external charge pump
16 12 IN 4 Digital input from the motor controller (bridge B)
17 13 OUT 4 Output of one half bridge of the bridge B
20 14
VS2
Supply voltage bridge B
21 15 GND Common Power Ground
22 16 GND Common Power Ground
23 17
VS1
Supply Voltage bridge A
26 18 OUT 2 Output of one half bridge of the bridge A
27 19 IN 2 Digital input from the motor controller (bridge A)
28 20 VBOOT Overvoltage input for driving of the upper DMOS
Pin
(*) For SO pac kage the pins 4, 5, 10, 11, 18, 19, 24 and 25 are not connected.
2/12
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
IN
V
V
T
V
, V
I
o
SENSE
BOOT
P
tot
stg
Supply Voltage 50 V
S
Input or Enable Voltage Range -0.3 to +7 V
EN
Pulsed Output Current 3 A
Sensing Voltage -1 to 4 V
Bootstrap Supply 60 V
Total power dissipation: ( T
= 80°C)
pins
(T
= 70°C no copper area on PCB)
amb
(T
= 70°C 8cm2 copper area on PCB)
amb
5
1.23
2
, TjStorage and Junction Temperature -40 to 150 °C
THERMA L D ATA
Symbol Parameter SO DIP Unit
R
th j-pins
R
th j-amb
Thermal Resistance Junction-pins Max 16 14 °C/W
Thermal Resistance Junction-ambient Max 73 65 °C/W
L6204
W
W
W
ELECTRICAL CHARACTERISTCS
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
S
f
C
T
J
T
d
TRANSISTORS
I
DSS
R
DS
LOGIC LEVELS
V
, V
INL
V
, V
INH
, I
I
INL
I
, I
INH
Supply Voltage 12 48 V
Total Quiescent Current EN1=EN2=H; IN1=IN2=IN3=IN4=L
EN1 = EN2 = L
Commutation Frequency 20 KHz
Thermal Shutdown 150 °C
Dead Time Protection 500 ns
Leakage Current OFF 1 mA
On Resistance ON 1.2 Ω
Input Low Voltage -0.3 0.8 V
ENL
Input High Voltage 2 7 V
ENH
Input Low Current IN1 = IN2 = IN3 = IN4 = EN1 = EN2
ENL
= L
Input High Current IN1 = IN2 = IN3 = IN4 = EN1 = EN2
ENH
50 µA
= H
10
10
-10 µA
mA
mA
3/12
L6204
APPLICATION DIAGRAM
Vs
D1
C1
VBOOT
Vs1
OUT1
OUT2
A
STEPPER MOTOR
B
Vs2
OUT3
OUT4
IN1
ENABLE1
IN2
CHARGE
PUMP
BOOTSTRAP
OSCILLATOR
D2
C2
SENSE1
SENSE1
RS1
THERMAL
SHUT DOWN
GND
SENSE2
SENSE2
RS2
IN4
ENABLE 2
IN3
CIRCUIT DESCRIPTION
L6204 is a dual full bridge IC designed to drive DC motors, stepper motors and other inductive loads. Each
bridge has 4 power DMOS transistor with R
= 1.2Ω and the relative protection and control circuitry.
DSon
(see fig. 3)
The 4 half bridges can be controlled independen tly by means of the 4 inputs I N!, IN2, IN3 , IN4 and 2 en-
able inputs ENABLE1 and ENABLE2.
External connections are provided so that sensing resistors can be added for c onstant current chopper
applications.
LOGIC DRIVE (*)
INPUTS
IN1 IN2
OUTPUT MOSFETS
IN3 IN4
L L Sink 1, Sink 2
EN1=EN2=H
L H Sink 1, Source 2
H L Source 1, Sink 2
H H Source 1, Source 2
EN1=EN2=L X X All transistor turned OFF
L = Low H = High X = Don’ t care
(*) True table for the two ful l bri dges
4/12
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