AUIPS7121RTRL [INFINEON]

CURRENT SENSE HIGH SIDE SWITCH; 电流检测高压侧开关


型号：	AUIPS7121RTRL
厂家：	Infineon
描述：	CURRENT SENSE HIGH SIDE SWITCH 电流检测高压侧开关开关高压
文件：	总13页 (文件大小：350K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

August, 27th 2009

Automotive grade

AUIPS7121R

CURRENT SENSE HIGH SIDE SWITCH

Features

Product Summary

•

Suitable for 24V systems

Over current shutdown

Over temperature shutdown

Current sensing

Active clamp

Optimized Turn On/Off for EMI

Reverse battery protection (Mosfet on)

Rds(on)

Vclamp

Current shutdown 50A min.

30m

Ω

65V

max.

Applications

•

75W Filament lamp

Solenoid

24V loads for trucks

Packages

Description

The AUIPS7121R is a fully protected five terminal high

side switch specifically designed for driving lamp. It

features current sensing, over-current, over-temperature,

ESD protection and drain to source active clamp. When

the input voltage Vcc - Vin is higher than the specified

threshold, the output power Mosfet is turned on. When the

Vcc - Vin is lower than the specified Vil threshold, the

output Mosfet is turned off. The Ifb pin is used for current

sensing. The over-current shutdown is higher than inrush

current of the lamp.

DPak

Typical Connection

Vcc

AUIPS7121R

Battery

Ifb

Out

Current feeback

10k

Input

Load

Rifb

Logic

Ground

Power

Ground

Off

Subject to change without notice

www.irf.com

AUIPS7121R

†

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

DPAK-5L

Moisture Sensitivity Level

(per IPC/JEDEC J-STD-020)

Class M2 (200 V)

(per AEC-Q100-003)

Class H1C (1500 V)

Machine Model

ESD

Human Body Model

(

)

per AEC-Q100-002

Class C5 (1000 V)

Charged Device Model

(per AEC-Q100-011)

Class II, Level A

(per AEC-Q100-004)

Yes

IC Latch-Up Test

RoHS Compliant

†

††

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.

www.irf.com

AUIPS7121R

Absolute Maximum Ratings

Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (Tambient=25°C unless

otherwise specified).

Symbol

Vout

Parameter

Maximum output voltage

Min. Max. Units

Vcc-60 Vcc+0.3

Vcc-Vin max. Maximum Vcc voltage

-32

-50

⎯

Iifb, max.

Vcc sc

Maximum feedback current

Maximum Vcc voltage with short circuit protection see page 7

Maximum power dissipation (internally limited by thermal protection)

Rth=50°C/W DPack 6cm² footprint

⎯

2.5

Tj max.

Max. storage & operating junction temperature

-40

150

°C

Thermal Characteristics

Symbol

Rth1

Parameter

Typ. Max. Units

Thermal resistance junction to ambient DPak Std footprint

Thermal resistance junction to ambient Dpak 6cm² footprint

Thermal resistance junction to case Dpak

⎯

°C/W

Rth2

Rth3

Recommended Operating Conditions

These values are given for a quick design.

Symbol

Iout

Parameter

Min. Max. Units

Continuous output current, Tambient=85°C, Tj=125°C

⎯

Rth=50°C/W, Dpak 6cm² footprint

3.8

⎯

Rifb

Ifb resistor

1.5

kΩ

www.irf.com

AUIPS7121R

Static Electrical Characteristics

Tj=25°C, Vcc=28V (unless otherwise specified)

Symbol

Vcc op.

Rds(on)

Parameter

Operating voltage range

ON state resistance Tj=25°C

ON state resistance Tj=150°C(2)

Supply leakage current

Min. Typ. Max. Units Test Conditions

⎯

Ids=2A

mΩ

Icc off

Iout off

Iin on

V clamp1

V clamp2

Vih(1)

Vin=Vcc=28V,Vifb=Vgnd

Vout=Vgnd

µA

⎯

Output leakage current

Input current when device on

Vcc to Vout clamp voltage 1

Vcc to Vout clamp voltage 2

High level Input threshold voltage

Low level Input threshold voltage

2.5

3.5

3.2

0.75

0.62

250

⎯

Vcc-Vin=28V

Id=10mA

Id=20A see fig. 2

Id=10mA

⎯

1.5

⎯

180

5.9

⎯

0.85

0.7

350

Vil(1)

Rds(on) rev Reverse On state resistance Tj=25°C

Isd=2A

If=3A

mΩ

Forward body diode voltage Tj=25°C

Forward body diode voltage Tj=125°C

Input resistor

Rin

Ω

(1) Input thresholds are measured directly between the input pin and the tab.

Switching Electrical Characteristics

Vcc=28V, Resistive load=6.8Ω, Tj=25°C

Symbol

tdon

tdoff

Parameter

Turn on delay time

Rise time from 20% to 80% of Vcc

Turn off delay time

Fall time from 80% to 20% of Vcc

Min. Typ. Max. Units Test Conditions

100

µs

See fig. 1

µs

Protection Characteristics

Tj=25°C, Vcc=28V (unless otherwise specified)

Symbol

Tsd

Isd

Parameter

Min. Typ. Max. Units

Test Conditions

See fig. 3 and fig. 11

See fig. 3 and page 7

See fig. 3

⎯

Over temperature threshold(2)

Over-current shutdown

Ifb after an over-current or an over-

temperature (latched)

150

2.7

165

3.3

°C

I fault

Current Sensing Characteristics

Tj=25°C, Vcc=28V (unless otherwise specified), Vcc-Vifb>4V

Symbol

Ratio

Ratio_TC

I offset

Parameter

Min. Typ. Max. Units

Test Conditions

Iload=5A

Tj=-40°C to +150°C

Iout<5A

I load / Ifb current ratio

I load / Ifb variation over temperature(2)

Load current offset

7050 8500

9950

-5%

-0.6

0.6

100

µA

Ifb leakage

Ifb leakage current

Iout=0A

(2) Guaranteed by design

www.irf.com

AUIPS7121R

Lead Assignments

3- Vcc

1- NC

2- In

3- Vcc

4- Ifb

5- Out

1 2 4 5

DPak

Functional Block Diagram

All values are typical

VCC

Charge

Pump

60V

1.5mA

75V

Driver

75V

Reset

Latch^Q

Set

Reverse

Battery

Protection

Iout > 60A

Tj > 165°C

Diag

IFB OUT

www.irf.com

AUIPS7121R

Truth Table

Op. Conditions

Normal mode

Open load

Input

Output

Ifb pin voltage

I load x Rfb / Ratio

Ifb leakage x Rifb

I fault x Rifb(latched)

I fault x Rifb (latched)

Open load

Short circuit to GND

Over temperature

Operating voltage

Maximum Vcc voltage : this is the maximum voltage before the breakdown of the IC process.

Operating voltage : This is the Vcc range in which the functionality of the part is guaranteed. The AEC-Q100 qualification

is run at the maximum operating voltage specified in the datasheet.

Reverse battery

During the reverse battery the Mosfet is turned on if the input pin is powered with a diode in parallel of the input transistor.

Power dissipation in the IPS : P = Rdson rev * I load² + Vcc² / 250 ( internal input resistor ).

If the power dissipation is too high in Rifb, a diode in serial can be added to block the current.

Active clamp

The purpose of the active clamp is to limit the voltage across the MOSFET to a value below the body diode break down

voltage to reduce the amount of stress on the device during switching.

The temperature increase during active clamp can be estimated as follows:

∆

= P_CL⋅ Z_TH(t_CLAMP

)

Where:

is the thermal impedance at t_CLAMPand can be read from the thermal impedance curves given in the

)

Z_TH(t_CLAMP

data sheets.

: Power dissipation during active clamp

P_CL= V_CL⋅I_CLavg

: Typical V_CLAMPvalue

V_CL= 65V

I_CL

: Average current during active clamp

: Active clamp duration

I_CLavg

I_CL

t_CL

V_Battery− V_CL

: Demagnetization current

Figure 9 gives the maximum inductance versus the load current in the worst case : the part switches off after an over

temperature detection. If the load inductance exceeds the curve, a free wheeling diode is required.

Over-current protection

The threshold of the over-current protection is set in order to guarantee that the device is able to turn on a load with an

inrush current lower than the minimum of Isd. Nevertheless for high current and high temperature the device may switch

off for a lower current due to the over-temperature protection. This behavior is shown in Figure 11.

www.irf.com

AUIPS7121R

Current sensing accuracy

Ifb

Ifb2

Ifb1

Ifb leakage

I offset

Iout1

Iout2

Iout

The current sensing is specified by measuring 3 points :

- Ifb1 for Iout1

- Ifb2 for Iout2

- Ifb leakage for Iout=0

The parameters in the datasheet are computed with the following formula :

Ratio = ( Iout2 – Iout1 )/( Ifb2 – Ifb1)

I offset = Ifb1 x Ratio – Iout1

This allows the designer to evaluate the Ifb for any Iout value using :

Ifb = ( Iout + I offset ) / Ratio if Ifb > Ifb leakage

For some applications, a calibration is required. In that case, the accuracy of the system will depends on the variation of

the I offset and the ratio over the temperature range. The ratio variation is given by Ratio_TC specified in page 4.

The Ioffset variation depends directly on the Rdson :

I offset@-40°C= I offset@25°C / 0.8

I offset@150°C= I offset@25°C / 1.9

Maximum Vcc voltage with short circuit protection

The maximum Vcc voltage with short circuit is the maximum voltage for which the part is able to protect itself under test

conditions representative of the application. 2 kind of short circuits are considered : terminal and load short circuit.

L supply

5µH

R supply

10mohm

Vcc

Out

L SC

0.1 µH

10 µH

R SC

10 mohm

100 mohm

IPS

Terminal SC

Load SC

L SC

R SC

www.irf.com

AUIPS7121R

T clamp

80%

Vcc-Vin

Ids

Vcc-Vin

20%

80%

Vcc

Vout

20%

Td on

Td off

Vds

Vds clamp

See Application Notes to evaluate power dissipation

Figure 2 – Active clamp waveforms

Figure 1 – IN rise time & switching definitions

Vin

Ids

I shutdown

Tsd

165°C

Tshutdown

V fault

Vifb

-50

100

150

Tj, junction temperature (°C)

Figure 3 – Protection timing diagram

Figure 4 – Icc off (µA) Vs Tj (°C)

www.irf.com

AUIPS7121R

VIH

VIL

-50

-25

100 125 150

Vcc-Vin, supply voltage (V)

Tj, junction temperature (°C)

Figure 5 – Icc off(µA) Vs Vcc-Vin (V)

Figure 6 – Vih and Vil (V) Vs Tj (°C)

200%

150%

100%

50%

100.00

10.00

1.00

0.10

0.01

1.E- 1.E- 1.E- 1.E- 1.E- 1.E+0 1.E+0 1.E+0

05 04 03 02 01

-50

100

150

Tj, junction temperature (°C)

Time (s)

Figure 7 - Normalized Rds(on) (%) Vs Tj (°C)

Figure 8 – Transient thermal impedance (°C/W)

Vs time (s)

www.irf.com

AUIPS7121R

100

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

25°C

150°C

1.E+01

1.E+02

1.E+03

1.E+04

Inductance (µH)

Iout, output current (A)

Figure 9 – Max. Iout (A) Vs inductance (µH)

Figure 10 – Ifb (mA) Vs Iout (A)

100

0.1

0.01

'-40°C

'+25°C

0.001

'+125°C

0.0001

Iout, output current (A)

Figure 11 – Tsd (s) Vs I out (A)

SMD with 6cm²

www.irf.com

AUIPS7121R

Case Outline 5 Lead – DPAK

www.irf.com

AUIPS7121R

Tape & Reel 5 Lead – DPAK

www.irf.com

AUIPS7121R

Part Marking Information

Ordering Information

Standard Pack

Form

Base Part Number

Package Type

Complete Part Number

Quantity

Tube

AUIPS7121R

AUIPS7121RTR

AUIPS7121RTRL

AUIPS7121RTRR

Tape and reel

3000

2000

AUIPS7121R

D-Pak-5-Lead

Tape and reel left

Tape and reel right

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

www.irf.com

AUIPS7121RTRL [INFINEON]

相关型号：

SI9130DB

SI9135LG-T1

SI9135LG-T1-E3

SI9135_11

SI9136_11

SI9130CG-T1-E3

SI9130LG-T1-E3

SI9130_11

SI9137

SI9137DB

SI9137LG

SI9122E