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产品型号IRS20957STRPBF的Datasheet PDF文件预览

March 5, 2009

Datasheet No – PD97381

IRS20957S

Protected Digital Audio Driver

Features

Product Summary

•

Floating PWM input enables easy half bridge

Topology

Half-Bridge

+/- 100 V

implementation

Programmable bidirectional over-current protection with

self-reset function

Programmable preset dead-time for improved THD

performances

V_{OFFSET (max)}

I_O+& I_O-(typical)

Selectable deadtime

Ton & toff (typical)

OC protection delay

1.0 A & 1.2 A

15/25/35/80ns

95ns & 80ns

500ns (max)

•

High noise immunity

100V ratings deliver up to 500W in output power

3.3 V/ 5 V logic compatible input

Operates up to 800kHz

Shutdown

propagation delay

250ns (max)

Typical Applications

•

Home theatre systems

Mini component stereo systems

Powered speaker systems

Package

General purpose audio power amplifiers

Typical Connection Diagram

Note: Please refer to Lead Assignments for correct pin configuration. This diagram shows

electrical connections only.

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IRS20957S

Table of Contents

Page

Description

Qualification Information

Absolute Maximum Ratings

Recommended Operating Conditions

Electrical Characteristics

Functional Block Diagram

Input/Output Pin Equivalent Circuit Diagram

Lead Definitions

Lead Assignments

Waveform definitions

Application information and additional information

Package Details

Tape and Reel Details

Part Marking Information

Ordering Information

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IRS20957S

Description

The IRS20957S is a high voltage, high speed MOSFET driver with a floating PWM input designed for Class

D audio amplifier applications.

Bi-directional current sensing detects over current conditions during positive and negative load currents

without any external shunt resistors. A built-in protection control block provides a secure protection

sequence against over-current conditions and a programmable reset timer.

The internal dead-time generation block enables accurate gate switching and optimum dead-time setting

for better audio performance, such as lower THD and lower audio noise floor.

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IRS20957S

Qualification Information^†

Industrial^††

Comments: This family of ICs has passed JEDEC’s

Industrial qualification. IR’s Consumer qualification level is

granted by extension of the higher Industrial level.

Qualification Level

MSL2^†††260°C

SOIC16N

Moisture Sensitivity Level

(per IPC/JEDEC J-STD-020)

Class B

Machine Model

Human Body Model

(per JEDEC standard EIA/JESD22-A115)

ESD

Class 2

(per EIA/JEDEC standard JESD22-A114)

Class I , Level A

IC Latch-Up Test

RoHS Compliant

(per JESD78)

Yes

†

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

†† Higher qualification ratings may be available should the user have such requirements. Please

contact your International Rectifier sales representative for further information.

††† Higher MSL ratings may be available for the specific package types listed here. Please contact

your International Rectifier sales representative for further information.

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IRS20957S

Absolute Maximum Ratings

Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All

voltage parameters are absolute voltages referenced to V_SS; all currents are defined positive into any lead.

The Thermal Resistance and Power Dissipation ratings are measured under board mounted and still air

conditions.

Symbol

V_B

Definition

High side floating supply voltage

High side floating supply voltage^†

High side floating output voltage

CSH pin input voltage

Min.

Max.

215

Units

-0.3

V_S

V_B-15

V_B+0.3

V_HO

Vs-0.3

V_CSH

V_CC

Vs-0.3

Low side fixed supply voltage^†

Low side output voltage

-0.3

V_LO

-0.3

V_CC+0.3

210

V_DD

Floating input supply voltage

Floating input supply voltage^†

PWM input voltage

-0.3

V_SS

(See I_DDZ

)

V_DD+0.3

V_CC+0.3

V_IN

V_SS-0.3

V_CSD

V_DT

CSD pin input voltage

V_SS-0.3

DT pin input voltage

-0.3

V_OCSET

V_REF

I_DDZ

OCSET pin input voltage

-0.3

VREF pin voltage

-0.3

Floating input supply zener clamp current^†

Low side supply zener clamp current^†

Floating supply zener clamp current^†

Reference output current

I_CCZ

I_BSZ

I_OREF

d V_S/dt

d V_SS/dt

Allowable V_Svoltage slew rate

Allowable V_SSvoltage slew rate^††

V/ns

Allowable V_SSvoltage slew rate upon power-up^†††

d V_SS/dt

V/ms

Rth_JA

T_J

Maximum power dissipation

1.0

115

150

300

Thermal resistance, Junction to ambient

Junction Temperature

°C/W

T_S

Storage Temperature

-55

°C

T_L

Lead temperature (Soldering, 10 seconds)

†

V_DD- V_SS, V_CC-COM and V_B- V_Scontain internal shunt zener diodes. Please note that the

voltage ratings of these can be limited by the clamping current.

††

For the rising and falling edges of step signal of 10V. Vss=15V to 200V.

††† Vss ramps up from 0V to 200V.

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IRS20957S

Recommended Operating Conditions

For proper operation, the device should be used within the recommended conditions below. The Vs and

COM offset ratings are tested with supplies biased at I_DD=5mA, V_CC=12V and V_B-V_S=12V.

Symbol

V_B

Definition

High side floating supply absolute voltage

High side floating supply offset voltage

Floating input supply zener clamp current

Floating input supply absolute voltage

High side floating output voltage

Low side fixed supply voltage

Low side output voltage

Min.

Vs+10

†

Max.

Vs+14

200

Units

V_S

I_DDZ

V_SS

100

V_B

V_HO

V_CC

V_LO

V_CC

V_DD

V_CC

0.8

V_IN

PWM input voltage

V_SS

V_CSD

V_DT

CSD pin input voltage

DT pin input voltage

Reference output current to COM^†

OCSET pin input voltage

I_OREF

V_OCSET

T_A

0.3

0.5

-40

Ambient Temperature

125

°C

†

††

Logic operational for Vs equal to –5V to +200V. Logic state held for Vs equal to –5V to –V_BS.

Nominal voltage for V_REFis 5V. I_OREFof 0.3 – 0.8mA dictates total external resistor value on

VREF to be 6.3k to 16.7k Ω.

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IRS20957S

Electrical Characteristics

V_CC,V_BS= 12 V, I_DD=5mA, V_SS=20V, V_S=0V,C_L=1nF and T_A=25°C unless otherwise specified.

Symbol

Description

Min

Typ

Max

Units

Test Conditions

Low Side Supply

V_CCsupply UVLO positive

threshold

V_CCsupply UVLO negative

threshold

Low side quiescent current

Low side zener diode clamp

voltage

UV_CC+

8.4

8.9

9.4

UV_CC-

I_QCC

8.2

8.7

9.2

V_DT= V_CC

I_CC=5mA

V_CLAMPL

19.6

20.4

21.6

High Side Floating Supply

High side well UVLO positive

threshold

UV_BS+

8.0

8.5

9.0

High side well UVLO negative

threshold

High side quiescent current

High to Low side leakage

current

UV_BS-

I_QBS

7.8

8.3

8.8

µA

I_LKH

V_B=V_S=200V

I_BS=5mA

High side zener diode clamp

voltage

V_CLAMPH

14.7

15.3

16.2

Floating Input Supply

V_DD, V_SSfloating supply

UV_DD+

UV_DD-

I_QDD

8.2

7.7

8.7

8.2

9.2

8.7

V_SS=0V

UVLO positive threshold

V_DD, V_SSfloating supply

UVLO negative threshold

Floating Input quiescent

current

Floating Input zener diode

clamp voltage

Floating input side to Low side

leakage current

V_SS=0V

V_DD=9.5V +Vss

I_DD=5mA

V_CLAMPM

I_LKM

9.8

10.2

10.8

µA

V_DD=V_SS=200V

Floating PWM Input

Logic high input threshold

voltage

Logic low input threshold

voltage

V_IH

V_IL

2.3

1.9

1.5

I_IN+

I_IN-

Logic “1” input bias current

Logic “0” input bias current

V_IN=3.3V

V_IN= V_SS

µA

Protection

V_REF

Reference output voltage

Low side OC threshold in Vs

4.8

1.1

5.1

1.2

5.4

1.3

I_OREF=0.5mA

OCSET=1.2V,

Figure 3

Vs=200V,

Figure 4

Vth_OCL

Vth_OCH

Vth1

High side OC threshold in

V_CSH

CSD pin shutdown release

threshold

CSD pin self reset threshold

CSD pin discharge current

CSD pin charge current

1.1+ Vs

1.2+ Vs

1.3+ Vs

0.62xV_DD0.70xV_DD0.78xV_DD

0.26xV_DD0.30xV_DD0.34xV_DD

V_SS=0V

Vth2

I_CSD+

I_CSD-

V_SS=0V

V_SD= V_SS+5V

100

130

µA

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IRS20957S

Protection (continued)

Symbol

Description

Min

Typ

Max

Units

Test Conditions

Shutdown propagation delay

from V_CSD> V_SS+ Vth_OCHto

Shutdown

t_SD

250

Figure 2

Propagation delay time from

t_OCH

500

Figure 4

Figure 3

V_CSH> Vth_OCHto Shutdown

Propagation delay time from

Vs> Vth_OCLto Shutdown

t_OCL

Gate Driver

Io+

Output high short circuit

current (Source)

Output low short circuit

current (Sink)

Low level out put voltage

LO – COM, HO – VS

High level out put voltage

VCC – LO, VB – HO

Turn-on rise time

Vo=0V,

PW<10µS

Vo=12V,

PW<10µS

1.0

1.2

Io-

V_OL

V_OH

0.1

1.4

Io=0A

Turn-off fall time

High and low side turn-on

propagation delay, floating

inputs

High and low side turn-off

propagation delay, floating

inputs

High and low side turn-on

propagation delay, non-

floating inputs

High and low side turn-off

propagation delay, non-

floating inputs

V_DT= V_CC,

V_S= 100V,

V_SS= 100V

V_DT= V_CC,

V_S= 100V,

V_SS= 100V

V_DT= V_CC,

V_S= 100V,

Ton_1

Toff_1

Ton_2

Toff_2

DT1

V_SS= COM

V_DT= V_CC,

V_S= 100V,

V_SS= COM

Deadtime: LO turn-off to HO

turn-on (DT_LO-HO) & HO turn-

V_DT>V_DT1,

V_SS= COM

off to LO turn-on (DT_HO-LO

)

Deadtime: LO turn-off to HO

turn-on (DT_LO-HO) & HO turn-

_DT1>V_DT> V_DT2,

V_SS= COM

DT2

off to LO turn-on (DT_HO-LO

)

Deadtime: LO turn-off to HO

turn-on (DT_LO-HO) & HO turn-

_DT2>V_DT> V_DT3,

V_SS= COM

DT3

off to LO turn-on (DT_HO-LO

)

Deadtime: LO turn-off to HO

turn-on (DT_LO-HO) & HO turn-

off to LO turn-on (DT_HO-

_LO)V_DT= V_DT4

V_DT3>V_DT,

V_SS= COM

DT4

110

0.51xVcc 0.57xVcc

0.32xVcc 0.36xVcc

0.21xVcc 0.23xVcc

0.63xVcc

0.40xVcc

0.25xVcc

V_DT1

V_DT2

V_DT3

DT mode select threshold 1

DT mode select threshold 2

DT mode select threshold 3

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IRS20957S

Functional Block Diagram

FLOATING INPUT

CSH

DETECT

VDD

HIGH

SIDE

INPUT

LOGIC

10.2V

LEVEL

SHIFT

LEVEL

SHIFT

LEVEL

SHIFT

FLOATING HIGH SIDE

VSS

5V REG

VCC

DETECT

CHARGE/

DISCHARGE

CSD

DEAD-TIME

LEVEL

SHIFT

COM

PROTECTION

CONTROL

LEVEL

SHIFT

LOW SIDE CS

OCSET

5.1V REFERENCE

VREF

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IRS20957S

I/O Pin Equivalent Circuit Diagrams

ESD

Diode

15 V

Clamp

ESD

Diode

200 V

V _CC

VCC

ESD

Diode

Clamp

ESD

Diode

COM

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IRS20957S

Lead Definitions

Pin #

Symbol

VDD

CSD

Description

Floating input positive supply

Shutdown timing capacitor, referenced to VSS

PWM non-inverting input, in phase with HO

Floating input supply return

VSS

VREF

OCSET

5V reference output for setting OCSET

Low side over current threshold setting, referenced to COM

Input for programmable dead-time, referenced to COM

Low side supply return

COM

Low side output

VCC

Low side logic supply

High side floating supply return

High side output

High side floating supply

CSH

High side over current sensing input, referenced to VS

Lead Assignments

CSH

VDD

CSD

VSS

VREF

VCC

OCSET

COM

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IRS20957S

Waveform definitions

Vth1

CSD

90%

HO/LO

t_SD

Figure 1: Switching Time Waveform Definitions

Figure 2: CSD to Shutdown Waveform Definitions

Vth_OCH

CSH

Vth_OCL

90%

t_OCL

t_OCH

Figure 3: V_S> Vth_OCLto Shutdown Waveform

Figure 4: V_CSH> Vth_OCHto Shutdown Waveform

Application information and additional information

Please refer to AN-1144 for IRS20957 functional description.

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IRS20957S

Package Details: SOIC16N

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IRS20957S

Package Details: SOIC16N, Tape and Reel

LOADED TAPE FEED DIRECTION

NOTE : CONTROLLING

DIMENSION IN MM

CARRIER TAPE DIMENSION FOR 16SOICN

Metric

Imperial

Min

Code

Min

7.90

3.90

15.70

7.40

6.40

10.20

1.50

Max

8.10

4.10

16.30

7.60

6.60

10.40

n/a

Max

0.318

0.161

0.641

0.299

0.260

0.409

n/a

0.311

0.153

0.618

0.291

0.252

0.402

0.059

1.60

0.062

REEL DIMENSIONS FOR 16SOICN

Metric

Imperial

Code

Min

329.60

20.95

12.80

1.95

98.00

n/a

18.50

16.40

Max

330.25

21.45

13.20

2.45

102.00

22.40

21.10

18.40

Min

12.976

0.824

0.503

0.767

3.858

n/a

Max

13.001

0.844

0.519

0.096

4.015

0.881

0.830

0.724

0.728

0.645

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IRS20957S

Part Marking Information

Part number

Date code

IRSxxxxx

YWW ?

IR logo

Pin 1

Identifier

? XXXX

Lot Code

(Prod mode –

4 digit SPN code)

MARKING CODE

Lead Free Released

Assembly site code

Per SCOP 200-002

Non-Lead Free Released

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IRS20957S

Ordering Information

Standard Pack

Base Part Number

Package Type

Complete Part Number

Form

Quantity

Tube/Bulk

IRS20957SPBF

SOIC16N

IRS20957S

Tape and Reel

2500

IRS20957STRPBF

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

IRS20957ST相关文章

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IRS20957STRPBF产品参数

型号:	IRS20957STRPBF
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Transferred
零件包装代码：	SOIC
包装说明：	ROHS COMPLIANT, MS-012AC, SOIC-16
针数：	16
Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01
风险等级：	2.94
Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3
长度：	9.89 mm
湿度敏感等级：	1
功能数量：	1
端子数量：	16
最高工作温度：	125 °C
最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP
封装等效代码：	SOP16,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260
电源：	12,20 V
认证状态：	Not Qualified
座面最大高度：	1.75 mm
子类别：	Other Consumer ICs
表面贴装：	YES
温度等级：	AUTOMOTIVE
端子面层：	MATTE TIN OVER NICKEL
端子形式：	GULL WING
端子节距：	1.27 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	30
宽度：	3.9 mm
Base Number Matches：	1

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