IRS20954SPBF Datasheet PDF - International Rectifier
| Part Number | IRS20954SPBF | |
| Description | Protected Digital Audio Driver | |
| Manufacturers | International Rectifier | |
| Logo |  |
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Data Sheet No. PD60276
Not recommended for new designs.
IRS20954SPBFPlease use IRS20955.
Protected Digital Audio Driver
Features
• Floating PWM input enables easy half bridge
implementation
• Integrated programmable bi-directional over-current
protection with self-reset function
• Programmable compensated preset deadtime for
improved THD performances
• High noise immunity
• ±100 V high voltage ratings deliver up to 500 W output
power
• 3.3 V / 5 V logic compatible input
• Operates up to 800 kHz
• Ro HS compliant
Product Summary
VOFFSET (max)
± 100 V
Gate driver
Io+ 1.0 A
Io - 1.2 A
Selectable Deadtime
15 ns, 25 ns,
35ns, 45 ns
Propagation delay
90 ns
OC protection delay
1 µs (max)
Description
The IRS2 0954 is a high voltage, high spe ed M OSFET drive r
with floating PWM input, spe cially desi gned for Cla ss D au dio
amplifier ap plications. The bi-di rectional cu rrent sensi ng
requires no external shunt resistors. It can ca pture over-current
conditions at either positive or negative load current direction. A
built-in control block p rovides secure prote ction sequence
against over-current conditions, including a programmable reset
timer. The internal de adtime gen eration blo ck provide s
accurate gat e swit ch timing and en ables optim um deadtime
settings for b etter audio performances, such as T HD and a udio
noise floor.
Typical Connection
Package
PWM
(Please refer to Lead
Assignments for correct
pin configuration. This
diagram shows
electrical connections
only)
IRS 20954 S
VDD
CSH
CSD
VB
IN HO
VSS
VS
NC
VREF
OCSET
NC
VCC
LO
DT COM
+B
Speaker
Vcc
12 V
-B
www.irf.com
1
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|
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Not recommended for new designs.
Please use IRS20955.
IRS20954SPBF
Electrical Characteristics (cont.)
Symbol
VDT1
VDT2
VDT3
Definition
DT mode select threshold 2
DT mode select threshold 3
DT mode select threshold 4
Min.
Typ.
Max.
0.51·(Vcc) 0.57·(V cc) 0.63·(V cc)
0.32·(V cc) 0.36·(V cc) 0.40·(V cc)
0.21·(V cc) 0.23·(V cc) 0.25·(Vv
Units
V
Test Conditions
Lead Definitions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol Description
VDD
Floating input positive supply
CSD
Shutdown timing capacitor, referenced to VSS
IN PWM non-inverting input, in phase with HO
VSS
Floating input supply return
NC
VREF 5 V reference output for setting OCSET
OCSET Low-side over-current threshold setting, referenced to COM
DT Input for programmable deadtime, referenced to COM
COM
Low-side supply return
LO Low-si
de output
VCC
Low-side logic supply
NC
VS High-side floating supply return
HO High
-side output
VB High-side floating supply
CSH
High-side over-current sensing input, referenced to VS
www.irf.com
VDD 1
CSD 2
IN 3
VSS 4
NC 5
VREF 6
OCSET 7
DT 8
20954
16 CSH
15 VB
14 HO
13 VS
12 NC
11 VCC
10 LO
9 COM
IRS20954 16 Lead SOIC (narrow body)
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for IRS20954SPBF electronic component. |
| Information | Total 25 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ IRS20954SPBF.PDF Datasheet ] | |
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