AUIR33401S_技术文档

August 2008

Automotive Grade

AUIR33401S

PROTECTED HIGH SIDE SWITCH

FOR AUTOMOTIVE DC MOTOR DRIVE

Features

Product Summary

•

Up to 20Khz PWM switching capability

Rds(on)@25°C

Max current

3.5mΩ max.

33A

Charge pump for DC operation

Active Dv/Dt control

Load current feedback

Operating voltage 6 – 18V

Short-circuit protection

Programmable over current shutdown

Over temperature shutdown

Under voltage shutdown

Gnd, IN and bootstrap pin loss protection

E.S.D protection

Low power mode

Leadfree, RoHS compliant

Automotive qualified*

Application

•

Fan engine cooling

Air conditioning blower

Pumps (oil, fuel, water…)

Compressor

Package

Description

The AUIR33401S is a 7 terminals high side switch for variable

speed DC motor. It features simplify the design of the DC

motor drive with a microcontroller. The Mosfet switches the

power load proportionally to the input signal duty cycle at the

same frequency and provides a current feedback on the Ifbk

pin. The over-current shutdown is programmable from 10A to

33A. Over-current, over-temperature latch OFF the power

switch, providing a digital diagnostic status on the input pin. In

sleep mode, the device consumes less than 10uA.

D2Pak - 7 leads

Further integrated protections such as ESD, GND and Cboot

disconnect protection guarantee safe operation in harsh

conditions of the automotive environment.

* Qualification standards can be found on IR’s web

site ww.irf.com

1

AUIR33401S

Qualification Information^†

Automotive

(per AEC-Q100^††)

Qualification Level

Comments: This family of ICs has passed an Automotive qualification. IR’s

Industrial and Consumer qualification level is granted by extension of the

higher Automotive level.

MSL1, 260°C

7L-DDPAK

Moisture Sensitivity Level

(per IPC/JEDEC J-STD-020)

Class M3

(per AEC-Q-100-003)

Machine Model

Class H2

per AEC-Q-100-002

Human Body Model

ESD

(

)

Class C5

(per AEC-Q-100-011)

Charged Device Model

RoHS Compliant

Yes

Qualification standards can be found at International Rectifier’s web site http://www.irf.com/

Exceptions to AEC-Q100 requirements are noted in the qualification report.

†

††

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AUIR33401S

Design: basic schematic with micro-processor

The basic circuit is giving all the functionality to drive a motor up to 33A DC. R_Ifbkset both the level current shutdown and

the current feedback reading scale. The IN signal provides the Pwm duty cycle to the AUIR33401S. D1 is the free

wheeling diode during PWM operation. As the equivalent circuit between Vbat and – Mot is 2 diode in series (the body

diode of the AUIR33401S and D1), the system requires T1, D2, R1 and R2 to sustain the reverse battery.

Recommended connection with reverse battery protection ¹:

+Bat

C3

C4

C1

100nF

IN

Vcc

R_IN

CBoot

I/O

Cboot

100nF

Diag

IN

AUIR33401S

Ifbk

R_pdiag

Vbat

+ Mot

Output

D1

MBR

3045CT

Ifbk

R2

10k

R_pIfbk

A/D

Gnd

- Mot

GND

C2

1nF

Current shutdown

programming resistor

R_Ifbk

T1

IRF140

Gnd

D2

12V

Gnd

Figure 1: Recommended schematic

This is the recommended schematic with an optional reverse battery¹. The recommended load is an inductive load. This

part may not be suitable for application conditions other than those specified above. Please contact IR’s Automotive

Technical support for further details on other applications requirement.

DC to 20 kHz operation

The AUIR33401S is able to operate in DC and high speed switching operation. To be able to switch at 20 kHz, a

bootstrap capacitor is used externally. The device integrates the power supply of the bootstrap capacitor. In DC operation,

when the capacitor is discharged, the charge pump maintains the device ON.

¹The reverse battery is optional. Remove T1, D2, R2 and connect –Mot to Gnd to remove the features.

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AUIR33401S

Active dv/dt control to reduce EMI Typical Connection

The AUIR33401S includes a special gate drive, managing the Mosfet dv/dt controlled internally, by managing the gate

voltage dynamically. To have the best compromise between the EMI levels and power loss, during the turn on and off

phase, the dv/dt output is dv/dt is not linear. The output voltage shape is an “S” shape.

Sense Load current feedback and programmable current shutdown

The Ifbk pin allows an analog measurement of the load current and with an external resistor allows to program the over

current shutdown level from 10A to 33A. The voltage threshold level of the Ifbk pin is internally set to 4V (See the formulas

below). It is also possible to dynamically adjust the current shutdown protection versus time by adding some external

components. This protection is latched. The operating mode is recovered after resetting by the sleep mode.

Vifbk

− gnd min

Rifbk

=

× Ratio min

Imax appli + Offset

Where:

Imax appli is the maximum application current

Ishtd max is the maximum output shutdown current

Vifbk − gnd max

Rifbk calculated

Ishtd max

=

× Ratio max + Offset

Internal over current shutdown

The maximum current shutdown threshold value is internally fixed to 50A typ. This protection is latched. The operating

mode is recovered after resetting by the sleep mode.

Under voltage lock-out

The AUIR33401S remains operational from UV Lo threshold. Under this continuous voltage, the device will be locked until

the voltage recovers the operating range, according to an internal hysteresis fixed to 0,5V min. The maximum rating

voltage is given by the Trench VDMOS technology where the avalanche voltage is up to 43V typically.

Sleep mode and reset fault:

The sleep mode is enabled if the IN pin stay low (Vin < V_{in µpower}) more than Tslp time. The consumption in sleep mode is

Icc off. The AUIR33401S wakes up at first rise edge on the IN pin (Vin > V_{in µpower}). This mode allows resetting all the

latched faults. (Cf. Figure 2: Wake sequence, sleep mode and reset latched fault.)

Wake up sequence:

The AUIR33401S has a power on reset. After wake up it by the IN signal, the devices wait for T_{pwr_on_rst}before activate the

output power mosfet. This time is necessary to charge properly the bootstrap capacitor and to stabilize the internal power

supply. (Cf. Figure 2: Wake sequence, sleep mode and reset latched fault.)

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AUIR33401S

In pin and digital diagnostic

The IN has two functions. In normal working condition, the output follows the IN pin digital level. In latched fault condition

(over current and over temperature shutdown), the IN pin provides a digital frequency signal feedback to the µ-processor.

Reset

fault

Fault

Vpwm

T_{pwron_rst}

T_slp

5v

Input pin

Diag

1

2

1

×

F_Diag

5v

V_diagL

Vout

Vcc

Figure 2: Wake sequence, sleep mode and reset latched fault.

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AUIR33401S

Absolute Maximum Ratings

Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters

are referenced to Vcc lead. (Tambient=25°C unless otherwise specified).

Symbol

Vout

Vin

Vcc max.

Vcc cont

Iin, max.

Pd

Parameter

Min.

Gnd-5v

-0.3

⎯

-0.3

⎯

Max.

Vcc+0.3

5.5

Units

V

mA

W

Maximum output voltage

Maximum input voltage

Maximum Vcc voltage

Maximum continuous Vcc voltage

Maximum input current

36

28

10

2

Maximum power dissipation

Rth=60°C/W

Electrostatic discharge voltage (Human body)

C=100pF, R=1500Ω

ESD1

⎯

4

kV

ESD2

Tj max.

Tsoldering

Charge device model (CDM)

Max. storage & operating temperature junction temperature

Soldering temperature (10 seconds)

⎯

-40

⎯

1

150

300

°C

Thermal Characteristics

Symbol

Rth1

Parameter

Typ.

60

0.65

Max.

⎯

Units

Thermal resistance junction to ambient

°C/W

Rth2

Thermal resistance junction to case

⎯

Recommended Operating Conditions

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

Symbol

Vcc max.

Iout

C_boot

R_IN

Parameter

Power supply voltage

Min.

6

⎯

100

1

Max.

18

33

220

10

Units

V

A

nF

kΩ

DC output current Tj=145°C, Tamb=85°C, Rth=5°C/W

Bootstrap capacitor

Recommended resistor in series with In pin

Recommended resistor in series with In pin to read the

diagnostic

R_pdiag

10

50

R_Ifbk

Recommended resistor to program over current shutdown

Recommended resistor in series with R_Ifbkpin to read the

current feedback

0.6

10

⎯

5

kΩ

R_pIfbk

F max.

25

20

Maximum input frequency

kHz

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AUIR33401S

Static Electrical Characteristics

Tj=25°C, Vcc=14V (unless otherwise specified)

Symbol

Parameter

Min. Typ. Max. Units Test Conditions

⎯

ON state resistance Tj=25°C

ON state resistance Tj=150°C

Forward voltage of the body diode

Supply current in µPower mode

Gnd current when the device is on

Output leakage when the MOSFET

is off and the device is woken up

Breakdown voltage between Vcc and

Vout

3

5.5

⎯

1

3.5

⎯

1.1

10

5

Iout=30A

Iout=17A Vcc=6V

Iout=30A

⎯

0.55

⎯

Rds(on)

mΩ

2

Vf

Icc off

Icc on

V

µA

mA

Vin=0V

I_Cboot = 0A Out = 0V

3

Mos Lkg on

⎯

39

0.6

8.5

43

15

⎯

mA

V

V_brk

V_{in µpower}

Input threshold voltage to enter in

µpower mode

0.8

V

V_IL

V_IH

V_{in Hyst}

Iin, on

IN Low threshold voltage

IN High threshold voltage

Input hysteresis

2

⎯

0.25

10

2.5

2.8

⎯

3

0.8

30

V

On state input current

20

µA

Vin = 5v

Vout = 0V

Cboot =500nF

Iboot

Bootstrap current charge

0.5

⎯

1.3

A

Vboot

V_diagL

Bootstrap voltage

Low level diagnostic output voltage

⎯

5.4

⎯

0.4

V

Vin = 5V Rin = 1kΩ

Switching Electrical Characteristics

Vcc=14V, Inductive load= 1Ω resistor, Tj=25°C (unless otherwise specified)

Symbol

Td on

Tr

dv/dt(on)

Td off

Tf

Parameter

Turn-on delay time

Rise time

Turn on dv/dt

Turn-off delay time

Fall time

Min. Typ. Max. Units Conditions

0.5

⎯

8

1.5

⎯

8

1.35

1

20

2.5

1

1.8

⎯

30

3.8

⎯

µs

V/µs

µs

dv/dt(off)

Turn off dv/dt

20

30

V/µs

²Guaranteed by design

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AUIR33401S

Protection Characteristics

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

Symbol

Parameter

Min. Typ. Max. Units Conditions

Vifbk - Gnd Over current threshold voltage

Isd

3.8

40

18

155

⎯

4

50

25

165

5

4.2

0.8

30

4.15

80

33

175

5.7

4.8

1.5

50

V

A

°C

V

ms

µs

Hz

Maximum over current shutdown

Current shutdown Rifbk = 1k

Over temperature threshold

Under voltage turn on

Isd 1k

Tsd

UV Ho

UV Lo

UV Hyst

Tslp

⎯

Under voltage turn off

Under voltage hysteresis

Sleep mode time and fault reset

Power on reset time

0.5

20

7

T_{pwr_on_rst}

Fdiag

8.5

250

15

⎯

diagnostic frequency

Current Sense Characteristics

Tj=25°C (unless otherwise specified), Rifb=1kΩ

Symbol

Offset

Parameter

Load current diagnostic offset

Min. Typ.

Max. Units Conditions

-3

0.18

3

A

Ratio

I load / (Ifb – Offset )

5250

6400

7450

⎯

Leads Assignment

AUIR33401S

PART NUMBER

1 : I_fbk

2 : IN

3 : Gnd

4 : Vcc (Tab)

5 : C_Boot

6 : OUT

7 : OUT

D2Pak 7 leads

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8

AUIR33401S

Vpulse

Vboot

dV

dt

Iboot = Cboot ×

Vboot

4V

dV

1V

dt

Figure 3 : Iboot test circuit

Vin

Vout

90%

60%

Dv on

Dv off

10%

Dt on

Tr

Dt off

Tf

Tdoff

Tdon

Figure 4 : Switching time test circuit

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AUIR33401S

Functional Block Diagram

All values are typical

Vcc

Vss

Treset

Boot strap

regulator

Internal power

supply

Cboot

Charge

Pump

On/Off

Uvlo 6v

R

Q

S

Level

Shifter

Driver &

Dv/dt

43V

Logic input

control

75V

Tj > 165°C

IN

+

Isd

fixed

6V

-

Vdd

-

+

-

4V

Gnd

Ifbk

OUT

Internal diode schematic

All values are typical

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AUIR33401S

4

3

2

1

0

5

4

3

2

1

0

VIL

VIH

Hihyst

Vin uP

Vifb-gnd

-50 -25

0

25 50 75 100 125 150

Temperature in °C

-50 -25

0

25 50 75 100 125 150

Temperature in °C

Figure 5: Input parameters vs. temperature

Figure 6: Vifb-gnd vs. temperature

6

5

4

180%

160%

140%

120%

100%

80%

60%

40%

20%

0%

UV LO

3

UV HI

UV Hyst

2

1

0

-50 -25

0

25 50 75 100 125 150

Temperature in °C

-50 -25

0

25 50 75 100 125 150

Tj, junction temperature in °C

Figure 7: Under voltage parameters vs.

temperature

Figure 8: Normalized Rdson Vs Tj

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AUIR33401S

12

10

8

40

35

30

25

20

15

10

5

6

Tpwr_on_rst

Tslp

4

2

0

-50 -25

0

25 50 75 100 125 150

Temperature in °C

-50 -25

0

25 50 75 100 125 150

Temperature in °C

Figure 9: Tpwr_on_rst vs. temperature

Figure 10: Tslp vs. temperature

70

60

1,6

1,4

1,2

1

50

Isd 1k

Isdf

40

0,8

0,6

0,4

0,2

0

30

20

10

0

Tr

Tf

-50 -25

0

25 50 75 100 125 150

Temperature in °C

-50 -25

0

25 50 75 100 125 150

Temperature in °C

Figure 11: Current shutdown vs. temperature

Figure 12: Rise and fall time vs. temperature

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AUIR33401S

6

5

4

3

2

1

0

25

20

15

10

5

Tdon

Tdoff

DvDtOn

DvDtOff

0

-50 -25

0

25 50 75 100 125 150

Temperature in °C

-50 -25

0

25 50 75 100 125 150

Temperature in °C

Figure 13: Tdon & off vs. temperature

Figure 14: Dv/dt on & off vs. temperature

6

5

4

1,0

0,9

0,8

0,7

0,6

0,5

3

Vcboot

Iboot

0,4

2

1

0

0,3

0,2

0,1

0,0

-50 -25

0

25 50 75 100 125 150

-50 -25

0

25 50 75 100 125 150

Temperature in °C

Figure 15: Bootstrap voltage vs. temperature

Figure 16: Current bootstrap vs. temperature

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AUIR33401S

Figure 17: Transient thermal impedance vs. time

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14

AUIR33401S

Case Outline 7L D2PAK

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15

AUIR33401S

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AUIR33401S

The information provided in this document is believed to be accurate and reliable. However, International Rectifier

assumes no responsibility for the consequences of the use of this information. International Rectifier assumes no

responsibility for any infringement of patents or of other rights of third parties which may result from the use of this

information. No license is granted by implication or otherwise under any patent or patent rights of International

Rectifier. The specifications mentioned in this document are subject to change without notice. This document

supersedes and replaces all information previously supplied.

For technical support, please contact IR’s Technical Assistance Center

http://www.irf.com/technical-info/

WORLD HEADQUARTERS:

233 Kansas St., El Segundo, California 90245

Tel: (310) 252-7105

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AUIR33401S

Revision History

Revision

A

Date

25/07/08

Notes/Changes

First release

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型号：	AUIR33401S
厂家：	Infineon
描述：	PROTECTED HIGH SIDE SWITCH FOR AUTOMOTIVE DC MOTOR DRIVE 受保护的高侧开关，汽车直流电机驱动外围驱动器驱动程序和接口开关接口集成电路电机
文件：	总18页 (文件大小：1465K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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