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

Product Summary
Rds(on) V cc.op. I cont. (Ta = 85oC) Ishutdown Oper. Freq. 12m max. 5.5 to 35V 7.0A 30A 20 kHz

Description
The IR 3220 is a Fully Protected Dual High Side Switch I.C. With two additional Low Side switches (e.g. IRF7474 - available 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 /overtemp. 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 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.

Packages

8 Lead SOIC (e.g. IRF7474) 20 Lead SOIC (wide body) (IR3220)

Typical Connection
+ Bat. VCC Gnd Vrc SS IN 1 LS gate 1 M1

+5V
10 k

14!


M2 LS gate 2

DG IN 2

Diagnostic Feedback

R
10 k

Clockwise motion

Rg D G
SO 8 Mosfet

Rg D G S S
SO 8 Mosfet
10 k

Counter clockwise motion

Micro Controller

Electrical stop

Electrical stop 0V

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Absolute Maximum Ratings

Absolute maximum ratings indicates sustained limits beyond which damage to the device may occur. All voltage parameters are referenced to Gnd lead. (TAmbient = 25o C unless otherwise specified). Symbols with (2) refer to M2 output.

Symbol
Vm1 (2) Vin1 (2) Vcc/gnd I in1 (2) Vg1 (2) Vss Vrc Irc Vdg Idg Isd cont. Isd pulsed ESD 1 ESD 2 PD TJ max. TL Vcc max. Ig1 (2) max. Ig1 (2) avg.

Parameter
Maximum M1 (M2) voltage (active clamp) Maximum IN 1 (IN 2) voltage Maximum Vcc pin to GND pin voltage Maximum IN1 (IN 2) current Maximum Gate 1 ( Gate 2 ) voltage Maximum SS voltage Maximum Vrc voltage Maximum output current of the Vrc pin Maximum diagnostic output voltage Maximum diagnostic output current Diode max. permanent current (Rth=60C/W) (1) (Rth=45C/W) (1) Diode max. pulsed current (1) Electrostatic discharge ( human body model C=100pF, R=1500) Electrostatic discharge ( machine model C=200pF, R=0, L=10H) Maximum power dissipation ( Rth = 60C/W ) Max. storage & operating junction temperature Lead temperature ( soldering 10 seconds ) Maximum Vcc voltage Maximum gate current (Ton < 5S) Maximum average gate current

Min.

Max.

Units
V mA V mA V mA A

Vcc-37 Vcc+0.3 -0.3 5.5 0.3 50 -1 10 -0.3 7.5 -0.3 5.5 -0.3 5.5 1 -0.3 5.5 -1 10 3.0 -40 4.0 15 tbd tbd 1.5 +150 300 37 100 10

V W C V mA

(1) Limited by junction temperature (pulsed current limited also by internal wiring)

Thermal Characteristics
Symbol
Rth 1 Rth 2

Parameter
Thermal junction to amb. resistance (stnd footprint 1 MOS on) Thermal junction to ambient resistance (1" sq. footprint 1 MOS on)

Typ.
60 45

Max.

Units
C/W

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Recommended Operating Conditions

These values are given for a quick design. For operation outside these conditions, please consult the application notes.

Symbol
Vcc Vin1 (2) Vin1 (2) Iout Ta=85C Iout Ta=105C R in R dg R C R gate

Parameter
Continuous Vcc voltage (2) High level IN 1 (IN 2) input voltage Low level IN 1 (IN 2) input voltage Continuous output current (Rth/amb < 5 C/W, Tj = 125C) Continuous output current (Rth/amb < 5 C/W, Tj = 125C) Recommended resistor in series with IN pin Recommended pull-up resistor on DG pin Soft-Start resistor Soft-Start capacitor Recommended gate resistor for Low Side Switch

Min.
8 4 -0.3 10 1 5.0 0.1 0

Max.
18 5.5 0.9 7.0 4.5 20 20 100 3.3 50

Units
V

k F

Static Electrical Characteristics

(Tj = 25oC, Vcc = 14V unless otherwise specified.)

Symbol
Rds1 on Rds2 on Vcc oper. Vclamp1 (2) Vf1 (2) IM1 (2) leakage Icc off Icc on Vdgl Idg leakage Vih1 (2) th. Vil1 (2) th. Iin1 (2) Vccuv VccuvVss+ VssIss leakage

Parameter
ON state resistance Tj = 25oC ON state resistance Tj = 150oC Functional voltage range Vcc to M1 (M2) clamp voltage Body diode 1 (2) forward voltage M1 (M2) output leakage current Supply current when off (sleep mode) Supply current when on Low level diagnostic output voltage Diagnostic output leakage current IN1 (IN2) high threshold voltage IN1 (IN2) low threshold voltage ON state IN1 (IN2) positive current Vcc UVLO positive going threshold Vcc UVLO negative going threshold SS high level threshold SS low level threshold SS pin leakage current

Min. Typ.
5.5 37 9 16 40 0.9 10 10 8 0.3 2.6 2.0 25 5 4 4 1 0.1

Max. Units Test Conditions

12 22 35 48 50 50 10 10 m Vin1,2 = 5V,1m1,2 = 5A Id =10mA see Figs.1,2 Id = 5A, Vin1,2 = 0V Vm1, 2 = 0V; Tj = 25C Vin1(2) = 0V Vin1 = 5V Idg = 1.6mA Vdg = 5.5V

V A mA V A V A

Vin1, 2 = 5V

V A

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Switching Electrical Characteristics
Vcc = 14V, Resistive Load = 3.0, Tj = 25oC, (unless otherwise specified).

Symbol
Tdon Tr1 Tr2

Parameter

Min. Typ. Max. Units

15 50 2.0 5 4 65 3 65 8 5 500 20 7 30 s

Test Conditions

Turn-on delay time Rise time to Vout = Vcc -5V Rise time from the end of Tr1 to Vout = 90% of Vcc dV/dt (on) Turn ON dV/dt Tdoff Turn-off delay time Tf Fall time to Vout = 10% of Vcc dV/dt (off) Turn OFF dV/dt IN1 (2) max. freq. Max. frequency on IN1 (IN2) Soft-Start freq. Soft-Start oscillator frequency Ig1 (2) min. Min. Gate 1 (Gate 2) current Trd Min. IN1 (2) OFF time to reset SS Vg1 Gate 1 (gate 2) voltage

see figure 3 V/s s V/s Hz kHz mA ms V see figure 4

low side driver C=3.0F, IN1 = IN2

Protection Characteristics
Symbol Parameter
Tsd Isd Treset Over-temperature threshold Over-current threshold Minimum time to reset protections

Min.
25

Typ.
165 30 100

Max. Units Test Conditions

35
oC

A S

See figure 2 See figure 2 IN1 = IN2 = 0V

Note: The low side switches present sufficient cooling capability in order to have the whole H Bridge function protected by the IR3220 inner temperature sensor.

Functional Block Diagram

SS Vrc Ref. Soft Start duty cycle
+

S S reset
uvlo

Oscillator
Gnd

VCC IN 1

VCC

H Bridge logic control & status feedback

40 V Active Clamp 40 V Active Clamp

IN 2

DG

Shoot-through protection

Over current shutdown

Over temp. protection

Over current shutdown

Shoot-through protection

G1

Low Side Driver

Low Side Driver

G2

M1

M2

Gnd

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Truth Table
IN1 IN2 L L L H L H H L H L H H 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 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 SS reset ON OFF OFF OFF OFF ON

* During Soft-start sequence, the low side part is switching.

** Protections are reset in this mode

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 Dg Vrc SS Logic input 1 ( Leg 1 Cdt. / mode ) Logic input 2 ( Leg 2 Cdt. / mode ) Diagnostic output ( open drain ) Voltage ref. output ( soft-start RC ) RC soft-start input ( the voltage on this input drives the switching duty cycle )

Recommended Low Side MOSFET

e.g. IRF7413 OR a 10m /40V - SOIC 8 packaged Power Mosfet

Lead Assignments
V cc Vcc m 1 m 1 m 1 nc g1 G nd In1 Vrc

D D DD

V cc Vcc m 2 m 2 m 2 nc g2 In2 D g S S

S S S G
8 Lead - SOIC e.g. IRF7474 Part Number

20 Lead - SOIC (wide body) IR3220

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Soft-start sequence
IN1
(IN2)

SS M1-M2
(M2-M1)

Vss+ VssDuty cycle modulation follows SS voltage Tss ( approximately 1.4 x RC time constant ) Trd

t t t

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
Vcc Micro Diagnostic Controller Additional Schottky diodes Dg In1 In2 ss

+Bat
Over-voltage protection

Direction & Braking Speed

IR 3220
DC Motor

Gnd

Star Connection

0V

-Bat

T clamp

5V

IN1 (2) 0 V
IN1 (2)

t < T reset I shutdown

t > T reset

I M1(2)
I M1(2) M1(2)
0V V clamp ( + Vcc )

Tj DG

Tsd

T shutdown

5V 0V

( see IPS Appl . Notes to evaluate power dissipation )

Figure 1 - Active clamp waveforms

Figure 2 - Protection Timing diagram

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IN 1(2)
Vcc 90% Vcc - 5 V

IN1(2)
90%

M1(2)
10% dV/dt on Td off Tr 1 Tr 2 Tf

dV/dt off

M1 (2)
10% Td on

Figure 3 - Switching Time Definitions (turn-on)

Figure 7 - Switching Time Definitions (turn-off)

IN1

IN2

SS

M1

Soft-Start sequence t

M2 Breaking Mode (M1 & M2 grounded) Stand-by Mode (M1 & M2 opened)

Motor Current

Figure 5 - IN1 (2) & M1 (2) Timing Diagrams

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50 40 30

6 5 4 3 IN1H (2) IN1L (2) IN1 (2) Hyst.

20
2

10 0 -50 -25

1 0

25

50

75

100 125 150

-50

50

100

150

Figure 6 - IN1 (2) current (A) vs Tj (oC)

Figure 7 - IN1 (2) thresholds (V) vs Tj (oC)

30

15

12.5

- - - 1 square footprint ------- standard footprint

20

10

7.5

10

2.5

0 0 -50 -25 0 25 50 75 100 125 150 -50 0 50 100 150 200

Figure 8 - Rdson (m) vs Tj (oC)

Figure 9 - Max. Cont. current (A) vs Amb. Temp. (oC)

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100

1000

10

100

10

0 1.00E-06 1.00E-04 1.00E-02 1.00E+00 1.00E+02 1.00E+04

0 1.00E03 1.00E02 1.00E- 1.00E+ 1.00E+ 1.00E+ 1.00E+ 01 00 01 02 03

Figure 10 - Transient Thermal Imped. (oC/W) vs Time (s)

Figure 11 - Iclamp (A) vs Power Supply Wire Inductance (mH - single pulse)

Case Outline - 8 Lead SOIC

(MS-012AA) 01-0021 09

4/12/2000

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Case Outline

20 Lead SOIC (wide body)

(MS-013AC) 01-3080 00

IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 Data and specifications subject to change without notice. 3/9/2001

10

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