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PDF IR3220 Data sheet ( Hoja de datos )
| Número de pieza | IR3220 | |
| Descripción | FULLY PROTECTED H-BRIDGE FOR D.C. MOTOR | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Preliminary Data Sheet No.PD60180-B
IR3220
FULLY PROTECTED H-BRIDGE FOR D.C. MOTOR
Features
• Over temperature shutdown
• Over current shutdown
• Inrush current limited by Soft-Start sequence
• E.S.D protection
• Status feedback
• Sleep mode for direct battery connection
• Braking/non-braking operation
Description
The IR 3220 is a Fully Protected Dual High Side Switch I.C.
With two additional Low Side switches (e.g. IRF7474 - avail-
able 01/01), the IR 3220 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 opera-
tion modes and the PWM Soft-Start sequence cycles the cor-
responding active low side switch in order to limit the motor
inrush current. 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.
Typical Connection
Product Summary
Rds(on)
12mΩ max.
V cc.op.
5.5 to 35V
I cont. (Ta = 85oC) 7.0A
Ishutdown
30A
Oper. Freq.
20 kHz
Packages
8 Lead SOIC
(e.g. IRF7474)
20 Lead SOIC (wide body)
(IR3220)
+ Bat.
R
C
VCC
Vrc
SS
IN 1 LS gate 1
14!
M1 M2
Gnd
DG
LS gate 2 IN 2
Rg
D
G
SO 8 Mosfet S
D
G
S SO 8 Mosfet
Rg
Electrical stop
Electrical stop
+5V
10 k
Diagnostic
Feedback
Clockwise motion
10 k
Counter clockwise motion
10 k
Micro
Controller
0V
www.irf.com
1
1 page  
IR3220
Truth Table
IN1 IN2
LL
LH
LH
HL
HL
HH
MODES
Stand-by with braking - sleep mode**
Foward rotation (normal operation)
Foward rotation (protection triiggered)
Reverse rotation (normal operation)
Reverse rotation (protection triggered)
Stand-by without braking
DG
H
H
L
H
L
H
* During Soft-start sequence, the low side part is switching.
HS1
OFF
OFF
OFF
ON
OFF
OFF
LSS1
ON
ON*
ON*
OFF
OFF
OFF
HS2
OFF
ON
OFF
OFF
OFF
OFF
LSS2
ON
OFF
OFF
ON*
ON*
OFF
** Protections are reset in this mode
SS reset
ON
OFF
OFF
OFF
OFF
ON
Lead Definitions
Vcc Positive power supply
M1 Motor 1 output ( high side source - leg 1 )
M2 Motor 2 output ( high side source - leg 2 )
G1 Gate 1 drive output ( low side gate - leg 1 )
G2 Gate 2 drive output ( low side gate - leg 2 )
Gnd
Power supply return
IN1 Logic input 1 ( Leg 1 Cdt. / mode )
IN2 Logic input 2 ( Leg 2 Cdt. / mode )
Dg Diagnostic output ( open drain )
Vrc Voltage ref. output ( soft-start RC )
SS RC soft-start input ( the voltage on this input
drives the switching duty cycle )
Recommended Low Side MOSFET
e.g. IRF7413 OR a 10mΩ /40V - SOIC 8 packaged Power Mosfet
Lead Assignments
Vcc Vcc m 1 m 1 m 1 nc g1 Gnd In1Vrc
D DDD
Vcc Vcc m 2 m 2 m 2 nc g2 In2 Dg SS
20 Lead - SOIC (wide body)
IR3220
WWW.IRF.COM
Part Number
SSSG
8 Lead - SOIC
e.g. IRF7474
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet IR3220.PDF ] | |
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