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PDF IRS20957S Data sheet ( Hoja de datos )
| Número de pieza | IRS20957S | |
| Descripción | Protected Digital Audio Driver | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IRS20957S (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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March 5, 2009
Datasheet No – PD97381
IRS20957S
Protected Digital Audio Driver
Features
• Floating PWM input enables easy half bridge
implementation
• Programmable bidirectional over-current protection with
self-reset function
• Programmable preset dead-time for improved THD
performances
• High noise immunity
• ±100V ratings deliver up to 500W in output power
• 3.3 V/ 5 V logic compatible input
• Operates up to 800kHz
Typical Applications
• Home theatre systems
• Mini component stereo systems
• P owered speaker systems
• General purpose audio power amplifiers
Product Summary
Topology Half-Bri
VOFFSET (max)
IO+ & IO- (typical)
Selectable deadtime
Ton & toff (typical)
OC protection delay
Shutdown
propagation delay
Package
dge
+/- 100 V
1.0 A & 1.2 A
15/25/35/80ns
95ns & 80ns
500ns (max)
250ns (max)
Typical Connection Diagram
Note: Pleas e refer to Lead Ass ignments for correct pin config uration. T his diagram sh ows
electrical connections only.
www.irf.com
© 2008 International Rectifier
1
http://www.Datasheet4U.com
1 page  
IRS20957S
Absolute Maximum Ratings
Absolute Maximum Ratin gs indicate sustain ed limit s beyond whi ch dama ge to the device may occu r. All
voltage parameters are absolute voltages referenced to V SS; all currents are defined positive into any le ad.
The Th ermal Re sistance and Po wer Dissi pation ratings are measured u nder board mo unted an d still a ir
conditions.
Sy mbol
VB
VS
VHO
VCSH
VCC
VLO
VDD
VSS
VIN
VCSD
VDT
VOCSET
VREF
IDDZ
ICCZ
IBSZ
IOREF
d VS /dt
d VSS /dt
d VSS /dt
Pd
RthJA
TJ
TS
TL
Definition
High side floating supply voltage
High side floating supply voltage†
High side floating output voltage
CSH pin input voltage
Low side fixed supply voltage†
Low side output voltage
Floating input supply voltage
Floating input supply voltage†
PWM input voltage
CSD pin input voltage
DT pin input voltage
OCSET pin input voltage
VREF pin voltage
Floating input supply zener clamp current†
Low side supply zener clamp current†
Floating supply zener clamp current†
Reference output current
Allowable VS voltage slew rate
Allowable VSS voltage slew rate††
Allowable VSS voltage slew rate upon power-up†††
Maximum power dissipation
Thermal resistance, Junction to ambient
Junction Temperature
Storage Temperature
Lead temperature (Soldering, 10 seconds)
Min.
-0.3
VB-15
Vs-0.3
Vs-0.3
-0.3
-0.3
-0.3
(See IDDZ)
VSS -0.3
VSS -0.3
-0.3
-0.3
-0.3
-
-
-
-
-
-
-
-
-
-
-55
-
Max.
215
VB+0.3
VB+0.3
VB+0.3
20
VCC +0.3
210
VDD+0.3
VDD+0.3
VDD+0.3
VCC +0.3
VCC +0.3
VCC +0.3
10
10
10
5
50
50
50
1.0
115
150
150
300
Units
V
mA
V/ns
V/ms
W
°C/W
°C
† VDD - V SS, V CC -COM a nd VB - V S contain internal shunt ze ner di odes. 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.
www.irf.com
© 2008 International Rectifier
5
5 Page 
IRS20957S
Lead Definitions
Pin #
1
2
3
4
5 NC
6
7
8
9
10
11
12 NC
13
14
15
16
Symbol
VDD
CSD
IN
VSS
VREF
OCSET
DT
COM
LO
VCC
VS
HO
VB
CSH
Description
Floating input positive supply
Shutdown timing capacitor, referenced to VSS
PWM non-inverting input, in phase with HO
Floating input supply return
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
Low side output
Low side logic supply
High side floating supply return
High side output
High side floating supply
High side over current sensing input, referenced to VS
Lead Assignments
VDD 1
CSD
IN
VSS
2
3
4
NC
VREF
5
6
OCSET 7
DT 8
16 CSH
15 VB
14 HO
13 VS
12 NC
11 VCC
10 LO
9 COM
www.irf.com
© 2008 International Rectifier
11
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| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet IRS20957S.PDF ] | |
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