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SI8241 데이터시트 PDF




Silicon Laboratories에서 제조한 전자 부품 SI8241은 전자 산업 및 응용 분야에서
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부품번호 SI8241 기능
기능 CLASS D AUDIO DRIVER
제조업체 Silicon Laboratories
로고 Silicon Laboratories 로고


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SI8241 데이터시트, 핀배열, 회로
Si824x
CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR
Features
0.5 A peak output (Si8241)
Input to output isolation for low noise
4.0 A peak output (Si8244)
(up to 2500 V)
PWM input
Up to 8 MHz operation
High-precision linear programmable Wide operating range
dead-time generator
–40 to +125 °C
0.4 ns to 1 µs
Transient immunity >45 kV/µs
High latchup immunity >100 V/ns RoHS-compliant
Up to 1500 Vrms output-output
SOIC-16 narrow body
isolation, supply voltage of ±750 V
Applications
Class D audio amplifiers
Description
The Si824x isolated driver family combines two isolated drivers in a single
package. The Si8241/44 are high-side/low-side drivers specifically targeted at
high-power (>30 W) audio applications. Versions with peak output currents of
0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a
maximum supply voltage of 24 V.
Based on Silicon Labs' proprietary isolation technology, the Si824x audio drivers
incorporate input-to-output and output-to-output isolation, which enables level-
translation of signals without additional external circuits as well as use of bipolar
supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead-
time generator that provides highly precise control for achieving optimal THD.
These products also have overlap protection that safeguards against shoot-
through current damage. The CMOS-based design also provides robust immunity
from latch-up and high-voltage transients. The extremely low propagation delays
enable faster modulation frequencies for an enhanced audio experience. The TTL
level compatible inputs with >400 mV hysteresis are available in PWM input
configuration; other options include UVLO levels of 8 V or 10 V. These products
are available in narrow body SOIC packages.
Functional Block Diagram
Ordering Information:
See page 25.
Pin Assignments
SOIC-16 (Narrow)
PWM
NC
VDDI
GNDI
DISABLE
DT
NC
VDDI
1 16
2 15
3 14
4 13
Si8241/44
5 12
6 11
7 10
89
VDDA
VOA
GNDA
NC
NC
VDDB
VOB
GNDB
Patents Pending
PWM
DT
VDDI
UVLO
Programmable Dead
Time, Control Gating
DISABLE
GNDI
Si8241/44
VDDA
VOA
GNDA
VDDB
VOB
GNDB
Rev. 0.2 2/11
Copyright © 2011 by Silicon Laboratories
Si824x
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Free Datasheet http://www.datasheet4u.com/




SI8241 pdf, 반도체, 판매, 대치품
Si824x
1. Top-Level Block Diagram
PWM
LPWM
DT
VDDI
VDDI
UVLO
DISABLE
LPWM
VDDI
DT CONTROL
&
OVERLAP
PROTECTION
UVLO
VDDI
UVLO
VDDA
VOA
GNDA
VDDB
VOB
GNDB
GNDI
Si8241/44
Figure 1. Si8241/44 Single-Input High-Side/Low-Side Isolated Drivers
4 Rev. 0.2
Free Datasheet http://www.datasheet4u.com/

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SI8241 전자부품, 판매, 대치품
2.1. Test Circuits
Figures 2 and 3 depict sink current and source current test circuits.
Si824x
INPUT
VDDI
(5 V)
VDD
IN_ Si824x OUT_
VSS
VDDA = VDDB = 15 V
SCHOTTKY
1 µF
10
100 µF
5V
+
_
Measure
50 ns
VDDI
200 ns
GND
INPUT WAVEFORM
1 µF
CER
10 µF
EL
RSNS
0.1
Figure 2. Sink Current Test Circuit
INPUT
VDDI
(5 V)
VDD
IN_ Si824x OUT_
VSS
VDDA = VDDB = 15 V
SCHOTTKY
1 µF
10
100 µF
5V
+
_
Measure
50 ns
VDDI
200 ns
GND
INPUT WAVEFORM
1 µF
CER
10 µF
EL
RSNS
0.1
Figure 3. Source Current Test Circuit
Rev. 0.2
7
Free Datasheet http://www.datasheet4u.com/

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Sanken
Sanken
SI8241

CLASS D AUDIO DRIVER

Silicon Laboratories
Silicon Laboratories

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