IRF IR3221

Preliminary Data Sheet No. PD60205
IR3221
FULLY PROTECTED H-BRIDGE for DC MOTOR
Features
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Product Summary
Over temperature shutdown
Over current shutdown
Ιnrush current limited by Soft-Start
sequence
E.S.D protection
Sleep mode for direct battery connection
Braking / non-braking operation
Internal switching oscillator
Direct interface for End switches
Rdson
Vcc.op.
I cont. ( heat sink )
I shutdown
Oper. Freq.
15 mΩ max.
5.5 to 35 V
20.0 A
50 A
20 kHz
Packages
Description
The IR3221 is a Fully Protected Dual High Side Switch
I.C. With two additional Low Side switches (IRL1404),
the IR3221 drives and controls the whole H bridge
topology. It provides shoot-through protection for each
leg, H bridge logic control, soft-start sequence and
over-current /over-temp. protections. The signals IN1
and IN2 select the operation modes and the PWM
Soft-Start sequence cycles the corresponding active
low side switch in order to limit the motor inrush curSIP 15
TO220 - IRL1404
rent. By using the recommended part number and the
proper cooling, the inner High Side IPS protects the
whole H-bridge function. The Soft-Start sequence is programmed by an RC time constant and reset itself
automatically.
Block Diagram
+ Bat.
+5V
VCC
Gnd
IR 3221
SS
IN 1 LS gate 1
M1
M2
LS gate 2
IN 2
Clockwise motion
10 k
R
D
D
S
S
Counter clockwise motion
G
TO 220 Mosfet
5V
G
10 k
TO 220 Mosfet
Debouncing
RC networks
( e;g 10 nF )
C
Electrical stop
Micro
Controller
Electrical stop
0V
IR3221
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are referenced to GROUND pin . T Ambient = 25 °c unless otherwise specified.
Symbol
Vm1(2)
Vin1 (2)
I in1 (2)
Vg1 (2)
Vss
Isd cont.
Isd pulsed
Esd 1
Esd 2
Pd
Tj max.
T lead
1
Parameter
Maximum M1 (M2) voltage ( active clamp )
Maximum IN 1 (IN 2) voltage
Maximum IN1 (IN 2) current
Maximum Gate 1 ( Gate 2 ) voltage
Maximum SS voltage
Diode max. permanent current (Rth=50°C/W)
Diode max. pulsed current
Electrostatic Disch. (human body model)C=100 pF R= 1500 Ω
Electrostatic Disch. ( Machine model ) C=200 pF R= 0 Ω
Maximum power dissipation (Rth=50°C/W)
Maximum storage & operating junction temperature
Lead temperature ( soldering 10 s )
1
1
Min.
Vcc-37
-0.3
-1
-0.3
-0.3
-40
-
Max.
Vcc+0.3
5.5
10
7.5
5.5
4
45
4
0.5
2.5
+150
300
Unit
V
V
mA
V
V
A
A
kV
kV
W
°C
°C
typ
50
1.0
max
-
Unit
°C/W
°C/W
Limited by junction temperature ( pulsed current limited also by internal wiring
Thermal Characteristics
Symbol
R th 1
R th 2
Parameter
Junction to amb. Thermal resistance
Junction to tab Thermal resistance
Recommended Operating Conditions
Those values are given for a quick design. For operation outside those conditions, please consult the application note
AN 1032
Symbol
Vcc
Vin1(2)
Vin1(2)
Iout max. 1
Iout max 2
R in
R
C
R gates
2
2
Parameter
Continuous Vcc voltage
High level IN1 (IN 2) input voltage
Low level IN1 (IN2) input voltage
Output cont. current ( Rthja=50°C/w, tamb=85°C, Tj=150°C )
Output cont. current ( Rthja=5°C/w, tamb=105°C, Tj=150°C )
Recommended resistor in series with IN pin
Soft-Start resistor
Soft-Start capacitor
Recommended gate resistors for Low Side Switches
2
Min.
8
4
-0.3
10
5.0
0.1
0
Max.
28
5.5
0.9
7.7
24
20
390
3.3
50
Unit
V
V
V
A
A
kΩ
kΩ
µF
Ω
Protections are operating down to 5.5 V
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IR3221
Static
Electrical Characteristics
o
Tj = 25 C, VCC = 14V unless otherwise specified.
Min.
Typ.
Max.
Unit
Rds on @ Tj = 25°C
Symbol
ON state resistance Tj = 25 °C
-
12
16
mΩ
Vin1,2 = 5 V ; Im1,2 = 5 A
Rds on @ Tj = 150°C
ON state resistance Tj = 150 °C
-
20
-
mΩ
Vin1,2 = 5 V ; Im1,2 = 5 A
Operating voltage range
5.5
-
35
V
V clamp1 (2)
Vcc to M1 (M2) clamp voltage
37
40
48
V
Vf1(2)
Body diode 1(2)forward voltage
-
0.9
-
V
Id = 5 A ; Vin1,2 = 0 V
Vcc oper.
Parameter
Test Conditions
Id = 10 mA see Fig. 1 & 2
M1 (M2) output leakage current
-
10
50
µA
Vm1,2 = 0 V ; Tj = 25 °c
Icc off
Supply current when off
-
10
50
µA
Vin1,2 = 0 V, Tj = 25 °c
Icc on
Supply current when on
-
8
-
mA
Vin1 = 5 V
V ih1(2) threshold
IN1 (IN2) high threshold voltage
-
2.6
-
V
V il1 (2) threshold
IN1 (IN2) low threshold voltage
-
2.0
-
V
ON state IN1 (IN2) positive current
-
35
-
µA
Vcc UVLO positive going threshold
-
4.5
-
V
I M1(2) leakage
I in1(2)
Vccuv+
Vccuv-
(sleep mode )
Vcc UVLO negative going threshold
-
4.2
-
V
Vss +
SS high level threshold
-
4.2
-
V
Vss -
SS low level threshold
-
1.2
-
V
I ss leakage
SS pin leakage current
-
-
10
uA
Vin1,2 = 5 V
Switching Electrical Characteristics
VCC =14V, Resistive Load =2.8Ω, R input = 10kΩ, and Tj = 25oC for each high side switch (unless otherwise specified).
Symbol
Parameter
Min.
Typ.
Max.
Unit
Test Conditions
5
-
µS
see fig. 3
td-on
Turn-on delay time
-
Tr 1
Rise time to Vout = Vcc - 5 V
-
4
-
µS
see fig. 3
Tr 2
Rise time to Vout = 90% of Vcc
-
65
-
µS
see fig. 3
see fig. 3
dV/dt ( on )
Turn-ON dV/dt
-
3
-
V/µs
Eon
Turn-ON energy
-
3
-
mJ
td-off
Turn-off delay time
-
65
-
µS
see fig. 4
Tf
Fall time to Vout = 10% of Vcc
-
8
-
µS
see fig. 4
Turn-OFF dV/dt
-
5
-
V/µs
see fig. 4
Turn-OFF energy
-
0.75
-
mJ
dV/dt ( off )
Eoff
IN1(2) Max. Freq.
Max. Frequency on IN1 (IN2 )
-
500
-
Hz
Soft-Start freq.
Soft-Start oscillator frequency
15
20
30
kHz
I g1 (2) Max.
Trd
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Max. Gate 1 ( Gate 2 ) current
50
-
-
mA
low side driver
Min. IN1(2) OFF time to reset SS
2.0
-
-
mS
C=3.0 uF,IN1=IN2
3
IR3221
Protection Characteristics
(High side switch protection)
Symbol
Parameter
Tsd
Over-temperature threshold
Isd
Over-current threshold
T reset
Note :
Min.
Typ.
Max.
Unit
-
165
-
°C
50
60
A
see fig. 2
300
-
µS
IN1=IN2 = 0 V
42
Minimum time to reset protections
Test Conditions
see fig. 2
The low side switches present sufficient cooling capability in order to have the whole H-bridge function
protected by the IR 3221 inner temperature sensor.
Truth Table
IN1
IN2
L
L
L
H
H
H
L
H
H
L
L
H
*
MODES
HS1
LSS1
HS2
LSS2
SS reset
Stand-by with braking - sleep mode **
forward rotation ( normal operation )
forward rotation ( protection triggered )
reverse rotation ( normal operation )
reverse rotation ( protection triggered )
Stand-by without braking
OFF
OFF
OFF
ON
OFF
OFF
ON
ON*
ON*
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON*
ON*
OFF
ON
OFF
OFF
OFF
OFF
ON
During Soft-Start sequence, the low side part is switching.
** Protections are reset in this mode
Block Diagram
SS
Soft Start duty cycle
+
S S reset
-
Oscillator
10 mA
Gnd
VCC
VCC
H Bridge logic control
& status feedback
IN 1
40 V Active Clamp
Shoot-through
protection
G1
Over current
shutdown
40 V Active Clamp
Over current
shutdown
Over temp.
protection
Low Side
Driver
Shoot-through
protection
Low Side
Driver
M1
4
IN 2
M2
G2
Gnd
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IR3221
Lead Definitions
Vcc
M1
M2
G1
G2
Gnd
Positive power supply
Motor 1 output ( high side source - leg 1 )
Motor 2 output ( high side source - leg 2 )
Gate 1 drive output ( low side gate - leg 1 )
Gate 2 drive output ( low side gate - leg 2 )
Power supply return
IN1
IN2
SS
Logic input 1 ( Leg 1 Cdt. / mode )
Logic input 2 ( Leg 2 Cdt. / mode )
RC soft-start input ( the voltage on this input
drives the switching duty cycle )
Recommended Low Side Mosfet
4.5 m Ω / 40 V – TO 220 packaged Power Mosfet
IRL1404
Lead Assignments
G D S
m1 m1 m1 nc g1 gnd ss Vcc in2 in1 g2 nc m2 m2 m2
SIP 15
TO 220
IR 3221
IRL1404
Soft-Start Sequence
IN1
(IN2)
SS
t
Vss+
Vss-
t
M1-M2
(M2-M1)
Duty cycle modulation follows SS voltage
Tss ( approximately 2 x RC time constant )
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t
Trd
5
IR3221
Permanent Switching Operation
(Without external RC time constant)
+5V
Additional Schottky diodes
have to be implemented if
the I.C temperature appears
too high.
A over-voltage protection
may be needed depending
on the power supply wire
length
Note:
+Bat
Additional
Schottky diodes
Vcc
Micro
Controller
Over-voltage
protection
In1
In2
ss
Direction &
Braking
Gnd
IR 3221
DC Motor
Speed
Star Connection
0V
-Bat
SS pin ( through a resistor ) can either drive the PWM duty cycle of the inner 20 kHz oscillator or force the
switching frequency ( 5V external clock signal ).
IN 1(2)
Vcc
90%
Vcc - 5 V
M1 (2)
dV/dt on
10%
Td on
Tr 1
Tr 2
Figure 3 - Switching times definition (turn-on)
IN1(2)
90%
M1(2)
dV/dt off
10%
Td off
Tf
Figure 4 - Switching times definition (turn-off)
6
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IR3221
IN1
t
IN2
t
SS
t
M1
Soft-Start sequence
t
M2
t
Stand-by Mode
(M1 & M2 opened)
Breaking Mode
(M1 & M2 grounded)
Motor
Current
t
Figure 5 - IN1 (2) & M1 (2) Timing Diagrams
50
5
40
4
30
3
20
2
10
1
0
----- IN1h (2)
-- -- IN1l (2)
- - - -IN1 (2) hysteresis
0
-50
-25
0
25
50
75
100
125
Figure 6 - IN1 (2) current (µA) Vs Tj (oC)
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150
-50
-25
0
25
50
75
100
125
150
Figure 7 - IN1 & IN1h (2) thresholds (V) Vs Tj (oC)
7
IR3221
25
30
20
20
15
10
10
5
0
0
0
10
20
30
-50
Figure 8 - Rdson (mΩ) (V) Vs Vcc (V)
-25
0
25
50
75
100
125
150
Figure 9 - Rdson (mΩ) (V) Vs Tj (oC)
6
15
- - - 1’’ square footprint
------- standard footprint
12,5
Eon
Eoff
10
4
7,5
5
2
2,5
0
-50
0
50
100
150
200
Figure 10 - Max. Cont. current (A) Vs Amb. Temp. (oC)
8
0
0
3
5
8
10
13
15
Figure 11 - Eon, Eoff (mJ) Vs | M1(2) (A)
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IR3221
10 0
10 00
10
10 0
1
10
0
1
0
1,00E -06
1,00E -04 1,00E -02 1,00E +0 0 1,00E +0 2 1,00E +0 4
Figure 12 - Transient Thermal Imped. (oC/W) Vs Time (S)
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0
1.00E 03
1.00E 02
1.00E 01
1.00E + 1.00E + 1.00E + 1.00E +
00
01
02
03
Figure 13 - Iclamp (A) Vs Power Supply Wire
Inductance (mH - single pulse)
9
IR3221
20 A H-Bridge Demoboard
VCC
Gnd
+ Bat.
IR 3221
SS
680Ω
IN 1 LS gate 1
M2
M1
LS gate 2
IN 2
IN 1
390k
R10
Clockwise motion
1k
39Ω
39Ω
100nF
M1
G
IRL 1404
2x1000uF
M2
D
D
S
G
S IRL 1404
IN 2
Counter clockwise motion
1k
5 1V
SS
Duty cycle ( if forced by an
analog voltage )
0V
Logic circuitry return
2.2uF
CP1
10k
10k
100nF
100nF
Note: Refer to AN 1032 application note for a detailed description of the functionality.
DC Power Suplly
20 A Continuous operation DC Motor
M1
VCC
M2
OV
M2
5V Logic command signals
( forward, reverse, braking, variable duty cycle … etc )
Soft Start Programmable time constant R10 / CP1
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105
Data and specifications subject to change without notice. 11/14/2002
10
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