返回主站 | 设为首页 | 加入收藏      
   
 
  首页 关于我们 产品展示 方案设计 技术分享 行业资讯 联系我们  
 
无线收发IC
2.4G无线收发IC
315MHz/433MHz无线遥控器发射接收IC
功放IC
电源管理IC
马达驱动IC/步进电机控制芯片
双通道D/A数模转换芯片
音量控制IC
触摸屏控制IC
LED照明驱动IC
锁相环IC
功率半导体器件
视频IC
HDMI IC
FM解调IC
USB声卡IC
LCD显示驱动IC
模拟开关阵列IC
STN Driver IC
电容式触摸感应IC
LED呼吸趣味灯驱动IC
音频CODEC IC
TFT-LCD 时序控制IC
Lightning闪电数据接口IC
TFT-Driver IC
方案设计
 
名称:
种类:
类别:

业务洽谈:

联系人:潘波 
手机:13713728695 
QQ:3003207580 
EMAIL:panbo@szczkjgs.com

联系人:张顺平 
手机:17727550196 
QQ:3003262363
EMAIL:zsp2018@szczkjgs.com

联系人:姚红霞 
手机:17727550195
QQ:3003214837
EMAIL:3003214837@qq.com

负责人联络方式:
QQ:784941831
手 机:13242913995
E-MAIL:panxia168@126.com
联系人:潘侠

 
当前位置:首页 -> 技术分享
IGT40R070D1 E8220 400V GaN D类放大器解决方案
文章来源:永阜康科技 更新时间:2020/9/17 11:24:00

infineon公司的IGT40R070D1 E8220是400V Cool增强模式氮化镓高迁移率晶体管(GaN HEMT).该器件通过在体二极管的零反向恢复电荷和非常小的线性输入和输出电容,克服了技术阻挡层如线性和功率损耗.CoolGaN™由于具有低/线性Coss,零Qrr和常开开关,理想的D类音频放大器提供0%失真和100%效率.D类放大器线性和功率损耗是高度依赖于开关器件的开关特性. Infineon公司的CoolGaN™通过引入体二极管的零反向恢复电荷和非常小的线性输入和输出电容,打破了这种技术壁垒.此外,增强模式提供了快速开合和关断速度,以及在单个芯片或封装内更好的集成通路.这种特性使得CoolGaN™和IRS20957SPBF D类控制器配对时更简便,能是客户更快的设计和更早走向市场.本文介绍了IGT40R070D1 E8220主要特性,电感负载开关时间测试电路以及采用IRS20957SPBF + IGT40R070D1 E8220评估板EVAL_AUDAMP24主要特性,主板和子板电路图,材料清单和PCB设计图.

The CoolGaN™ 400V e-mode GaN HEMT is a derivative of the industry benchmark CoolGaN™ 600V technology. This enhancement-mode power transistor (IGT40R070D1 E8220) overcomes the technology barriers, such as linearity and power loss, by introducing zero reverse recovery charge in the body diode and very small, linear input and output capacitances. The IGT40R070D1 E8220 is optimized for class D audio amplifie r applications where it provides excellent audio experience.

IGT40R070D1 E8220

400V CoolGaN™ enhancement-mode Power Transistor

The 400V CoolGaNTM family is the derivative of industry benchmark 600V CoolGaNTM technology, optimized for Class-D Audio amplifier applications.

CoolGaN™ enables smoother switching and more linear class D output stage by offering

low/linear Coss, zero Qrr, and normally-off switch. Ideal class D audio amplifiers offer zero percent distortion and 100 percent efficiency. What impairs the linearity and power loss is highly dependent on switching characteristics of the switching device. Infineons CoolGaN™ breaks through the technology barrier by introducing zero reverse recovery

charge in the body diode and very small, linear input and output capacitances.

In addition, the enhancement-mode concept offers fast turn-on and turn-off speed as well as a better path towards integration either on a chip or package level. This feature also simplifies pairing CoolGaN™ with the IRS20957SPBF class D controller and therefore

enables faster design-in and time-to-market for our customers.

CoolGaN™ for class D audio

CoolGaN™ 400 V is tailored for premium HiFi home audio, professional, and aftermarket

car audio systems where end users demand every detail of their high-resolution soundtracks. These have been conventionally addressed by bulky linear or tube amplifiers. With CoolGaN™ 400 V as class D output stage, audio designers are able to deliver the best listening experience to their prospective audio fans.

Infineons CoolGaN™ 400 V device, IGT40R070D1 E8220 in HSOF-8-3 (TO-leadless) package has been tested in class D audio amplifier applications on 200 W + 200 W dual channel system designs. Please refer to EVAL_AUDAMP24 for more details.

IGT40R070D1 E8220主要特性:

››Ultralow and linear Coss 400 V power device

››Zero Qrr

››Enhancement-mode transistor –normally-off switch

››Ultrafast switching

››Capable of reverse conduction

››Low gate charge, low output charge

››Superior commutation ruggedness

››Qualified according to JEDEC standards (JESD47 and JESD22)

IGT40R070D1 E8220主要优势:

››Outstanding audio quality

››High reliability

››Clean switching performance

››Narrow dead time for better THD

››Improves efficiency due to best figure of merit (FOM) in the 400 V class

››Easy to use: compatible with the IRS20957SPBF class D controller

IGT40R070D1 E8220应用:

· Class-D Audio Amplifier

图1. IGT40R070D1 E8220电感负载开关时间测试电路

图2. IGT40R070D1 E8220反向通路特性图

IRS20957SPBF + IGT40R070D1 E8220评估板EVAL_AUDAMP24

The EVAL_AUDAMP24 GaN e-mode High Electron Mobility Transistor (HEMT) evaluation board is a two-channel, 225 W/ch (4 Ω at ±43 V) or 250 W/ch (8 Ω at ±63 V) half-bridge class D audio power amplifier for Hi-Fi audio systems. This evaluation board demonstrates how to use the CoolGaN™ gallium nitride transistor, IRS20957S controller IC, implement protection circuits, and design an optimum PCB layout using the IGT40R070D1 E8220, CoolGaN™ gallium nitride transistor. The reference design provides all the required housekeeping power supplies for ease of use. The two-channel design is scalable for power and the number of channels.

The EVAL_AUDAMP24 features a two-channels self-oscillating type PWM modulator for the lowest component count, highest performance and robust design. This topology represents an analog version of a second-order sigma-delta modulation, having a class D switching stage inside the loop. The benefit of the sigma-delta modulation, in comparison to the carrier-signal based modulation, is that all the error in the audible frequency range is shifted to the inaudible upper-frequency range by nature of its operation. Also, sigma-delta modulation enables the designer to apply sufficient error correction.

评估板EVAL_AUDAMP24主要特性:

· Output power:

− 225 W x 2 channels (1 percent THD+N, 4 Ω at ±43 V)

− 250 W x 2 channels (1 percent THD+N, 8 Ω at ±63 V)

· Multiple protection features:

− Over-Current Protection (OCP), high-side and low-side CoolGaN™ transistors

− Over-Voltage Protection (OVP)

− Under-Voltage Protection (UVP), high-side and low-side CoolGaN™ transistors

− Over-Temperature Protection (OTP)

· PWM modulator:

− Self-oscillating half-bridge topology with optional clock synchronization

评估板EVAL_AUDAMP24应用:

· Hi-Fi amplifiers

· AV receivers

· Home theater systems

· Powered speakers

· Musical instrument amplifiers

图3. 评估板EVAL_AUDAMP24外形图

The EVAL_AUDAMP24 self-oscillating topology consists of the following essential functional blocks:

· Front-end integrator

· PWM comparator

· Level shifters

· Gate drivers and CoolGaN™ HEMTs

· Output LPF

图4.D类放大器简化框图

图5. 评估板EVAL_AUDAMP24主板电路图(1)

 

图6. 评估板EVAL_AUDAMP24主板电路图(2)

图7. 评估板EVAL_AUDAMP24主板电路图(3)

图8. 评估板EVAL_AUDAMP24主板电路图(4)

图9. 评估板EVAL_AUDAMP24子板电路图

图10. 评估板EVAL_AUDAMP24 PCB设计图:主板正面

图11. 评估板EVAL_AUDAMP24 PCB设计图:主板背面

图12. 评估板EVAL_AUDAMP24 PCB设计图:子板正面

图13. 评估板EVAL_AUDAMP24 PCB设计图:子板背面

主板材料清单:

子板材料清单:

 
 
 
    相关产品  
 
深圳市永阜康科技有限公司 粤ICP备17113496号  服务热线:0755-82863877 手机:13242913995