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BM28723AMUV PDF预览

BM28723AMUV

更新时间: 2023-09-03 20:40:24
品牌 Logo 应用领域
罗姆 - ROHM 通信开关控制器微控制器软启动脉冲功率因数校正转换器
页数 文件大小 规格书
82页 5460K
描述
BM1050AF是组合了应对高次谐波的功率因数校正(Power Factor Correction)转换器(以下简称PFC部)与DC/DC转换器(以下简称DC/DC部)的复合LSI。DC/DC部采用准谐振方式动作,有助于实现低EMI。BM1050AF内置650V耐压启动电路。PFC部、DC/DC部均外接开关MOSFET及电流检测电阻,可实现自由度高的电源设计。PFC部采用峰值电流控制。利用带AC电压过低补偿电路的乘法器、应对负载变动的电路、最大功率补偿电路等各种保护电路,提供合适的应用方案。此外,内置跳频功能,有助于实现低EMI。DC/DC部的准谐振方式为软开关动作,有助于实现低EMI。内置脉冲串模式,可降低轻负载时的功耗。内置了软启动功能、脉冲串功能、逐周期过电流限制、过电压保护、过负荷保护等各种保护功能。与微控制器间设有通信控制用端子、外部停止端子,可提供适用于各种应用的系统方案。

BM28723AMUV 数据手册

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Datasheet  
Middle Power Class-D Speaker Amplifier series  
17W+17W  
Full Digital Speaker Amplifier  
with built-in DSP  
BM28723AMUV  
General Description  
Features  
BM28723AMUV is a 17W+17W Class D stereo Speaker  
Amplifier with built-in DSP designed for TVs specifically  
for space-saving and low-power consumption.  
BM28723AMUV features BCD (Bipolar, CMOS, DMOS)  
process technology to achieve high efficiency. In addition,  
BM28723AMUV is packaged in a compact back surface  
heatsink type power package to attain low power  
consumption, low heat generation without external  
heatsink. The package Max output power is only  
17W+17W (When RL=8Ω) as compared to 20W+20W  
(When RL=8Ω) Max output power of package with  
external heat-sink.  
Built-in DSP (Digital Sound Processor) for Audio  
Signal Processing for TVs  
12-Band/ch BQ, 3-Band DRC, Pre-Scaler, Channel  
Mixer, Fine Master Volume, Hard Clipper, Level  
Meter, etc.  
Single Input System for Digital Audio Interface (No  
Master Clock Required)  
- I2S/LJ/RJ Format  
- LRCLK: 32kHz/44.1kHz/48kHz  
- BCLK: 32fs/48fs/64fs  
- SDATA: 16bit/20bit/24bit  
Single Output System for Digital Audio Interface  
The product satisfies all needs for drastic downsizing,  
low-profile structures and powerful high quality playback  
of sound systems.  
- I2S Format  
- SDATA: 16bit/20bit/24bit  
No Snubber Circuit Required (VCCP1, VCCP2≤22V)  
because of Slew Rate Control  
Output Feedback Circuit which prevents decrease of  
sound quality caused by change of power supply  
voltage, achieves low noise and low distortion, so no  
large electrolytic-capacitors for VCC bypass is  
required.  
Key Specifications  
Supply voltage range  
(VCCP1, VCCP2  
10V to 24V  
17W+17W (Typ)  
0.08[%] (Typ)  
)
Speaker output power  
(VCCP1, VCCP2=18V, RL=8Ω)  
THD+N  
Wide Range of Power Supply Input Voltage  
The monaural output reduces the number of  
external parts needed.  
Applications  
High Efficiency and Low Heat Dissipation allowing  
Miniaturization, Slim Design, and also Power Saving  
of the System  
Eliminates pop-noise generated during the power  
supply ON/OFF. High quality muting performance is  
achieved using the soft-muting technology.  
Built-in with Various Protection Functions for Highly  
Reliability Design  
TVs (LCD, OLED)  
Home Audio  
Desktop PC  
Amusement Equipment  
Electronic Music Equipment, etc.  
Typical Application Circuit  
- High Temperature Protection  
- Under Voltage Protection  
SP ch1  
(Lch)  
SP ch2  
(Rch)  
- Output Short Protection  
- DC Voltage Protection for speaker  
- Clock Stop Protection  
Small Package, it reduces surface mount area  
Package  
VQFN032V5050  
W(Typ) x D(Typ) x H(Max)  
5.00mm x 5.00mm x 1.00mm  
Digital  
Audio  
Source  
μ -con  
Figure 1. Typical Application Circuit  
VQFN032V5050  
Product structure: Silicon integrated circuit This product has no designed protection against radioactive rays  
www.rohm.com  
© 2018 ROHM Co., Ltd. All rights reserved.  
TSZ22111 14 001  
TSZ02201-0C1C0E900720-1-2  
31.Aug.2018 Rev.001  
1/79  

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