IR3220 Datasheet, PDF (1/10 Pages) International Rectifier – FULLY PROTECTED H-BRIDGE FOR D.C. MOTOR

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
R_ds(on)
12mΩ max.
V _cc.op.
5.5 to 35V
I cont. (Ta = 85oC) 7.0A
I_shutdown
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
Rg
D
G
S ^{SO 8 Mosfet}
Electrical stop
Electrical stop
+5V
10 k
Diagnostic
Feedback
Clockwise motion
10 k
Counter clockwise motion
10 k
Micro
Controller
0V
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