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| 型号： | SI8244CB-C-IS1 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 16/30页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO DRIVER PWM 16-SOIC |
| 标准包装： | 48 |
| 类型： | 音频驱动器 |
| 应用： | D 类音频放大器 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 管件 |
| 其它名称： | 336-2000-5 SI8244CB-B-IS1 |
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Si824x
Rev. 1.0
23
4. Applications
The following examples illustrate typical circuit configurations using the Si824x.
4.1. Class D Digital Audio Driver
Figures 39 and 40 show the Si8241/4 controlled by a single PWM signal. Supply can be unipolar (0 to 1500 V) or
bipolar (± 750 V).
Figure 39. Si824x in Half-Bridge Audio Application
Figure 40. Si824x in Half-Bridge Audio Application
D1 and CB form a conventional bootstrap circuit that allows VOA to operate as a high-side driver for Q1, which has
a maximum drain voltage of 1500 V. VOB is connected as a conventional low-side driver. Note that the input side of
the Si824x requires VDD in the range of 4.5 to 5.5 V, while the VDDA and VDDB output side supplies must be
between 6.5 and 24 V with respect to their respective grounds. The boot-strap start up time will depend on the CB
cap chosen. VDD2 is usually the same as VDDB. Also note that the bypass capacitors on the Si824x should be
located as close to the chip as possible. Moreover, it is recommended that 0.1 and 10 F bypass capacitors be
used to reduce high frequency noise and maximize performance. The D1 diode should be a fast-recovery diode; it
should be able to withstand the maximum high voltage (e.g. 1500 V) and be low-loss. See “AN486: High-Side
Bootstrap Design Using Si823x ISODrivers in Power Delivery Systems” for more details in selecting the bootstrap
cap (CB) and diode (D1).
Si8241/4
CB
GNDI
VDDI
PWM
VDDA
VOA
GNDA
VOB
VDDI
VDDB
GNDB
DISABLE
DT
RDT
CONTROLLER
C1
1uF
PWMOUT
I/O
Q1
Q2
D1
VDDB
C3
10uF
VDD2
C2
1 F
1500 V max
Si8241/4
CB
GNDI
VDDI
PWM
VDDA
VOA
GNDA
VOB
VDDI
VDDB
GNDB
DISABLE
DT
RDT
CONTROLLER
C1
1uF
PWMOUT
I/O
Q1
Q2
D1
VDDB
C3
10uF
VDD2
C2
1 F
+750 V max
-750 V max
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI8244CB-C-IS1R | 制造商:Silicon Laboratories Inc 功能描述:CLASS D AUDIO DRIVER - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:Silicon Laboratories Inc 功能描述:2.5kV 4A "D" Audio 10V UVLO PWM input |
| SI824X_11 | 制造商:SILABS 制造商全称:SILABS 功能描述:CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR |
| Si824xClassD-KIT | 功能描述:音频 IC 开发工具 Audio Class D Ref. Design using Si824x RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| SI8250 | 制造商:SILABS 制造商全称:SILABS 功能描述:DIGITAL POWER CONTROLLER |
| SI8250DK | 功能描述:电源管理IC开发工具 Development kit for Si8250/1/2 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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