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德欧泰克以专项技术、持续研究和对行业的热情,保持其产品组合与市场的需求紧密相关。

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温度监测 - 三种成本优化的解决方案概述

Temperature Monitoring

环境温度和元件温度对电子设备的性能和寿命有着决定性的影响。

这  应用说明 介绍了三种准确和经济有效的解决方案,适用于广泛的温度传感应用。

 

降低调节电流的并联稳压器和参考电压

MMTL431B

The MMTL431B extends our family of Shunt Regulators and Precision Voltage References. It offers a reduced minimum regulation current I_K(min) of typically 30 µA, and maximum 300 µA. This makes it ideally suited for secondary side control of flyback converters, used in offline power supplies and battery chargers, but also replacement of low voltage Zener diodes (< 10 V). Especially in latter case it is often desired to have a temperature compensated, stabilized voltage at low current consumption. With just few external components, the MMTL431B allows for exactly such function.

 

近乎无铅的玻璃封装

lead-free parts

Though the RoHS directive still allows usage of lead (Pb) under exemption 7(c)-I, our devices in glass package will be switched from January 2022 onwards to totally lead-free versions. Through this we address the increasing number of customer requests for such "green" devices. Package outlines include SOD-106 (MicroMelf), SOD-80C (Glass-MiniMelf), DO-213AB (Glass-Melf) and DO-35 (Axial lead). Since there is no change in form, fit nor function, a PCN is not required. Our family of totally lead-free parts further includes these plastic case outlines: 0603, 1608, SOD-882, SOT-883, SOD-523, SOD-323(F), SOD-123(F), SOT-323, SOT-363, SOT-23.

德欧泰克选型指南:二极管&整流器和晶体管&稳压器

selection guides

我们已经制作了最新的选型指南,它包含2个部分: 第一部分为 二极管&整流器 ,第二部分为: 晶体管&稳压器.

们提供了我们整个产品范围的快速概述,因此是一个有用的工具,根据其主要参数选择组件,并寻找潜在的替代品。第一次,我们使用3D图像表示产品的外形,这可以帮助我们快速识别零件。而且,主要尺寸和封装标准也同时可以查询。标准化的符号有助于容易地区分例如单双向TVS二极管或识别双或多器件的配置。你可以从我们的 网站 上下载单页或在这里订购两个印刷版本 orderconfirmation@diotec.com.

用于智能电表、LED路灯和4G/5G基站的高压二极管

SM2000GP

无处不在比以往任何时候都重要。4G和5G基站被放置在暴露位置,以便发送和接收信号覆盖更广的区域。因此,它们经常受到雷击,很容易损坏其敏感的电子电路。暴露的位置使得任何维修都很困难和昂贵;因此,需要耐用的设备才能长期可靠地运行。类似的问题也适用于智能电表和LED路灯,它们直接与地面线路相连,广泛分布在大范围内。

SM2000GP 是德欧泰克专用高压整流器家族的最新成员之一,适用于这些应用。它的最大直流阻塞电压为1600v,反向重复电压为2000v,即使在更高的温度下也能提供低的反向泄漏电流。其正向浪涌电流额定值分别为35 A (50 Hz/10 ms)和39 A (60 Hz/8.3 ms)。该部件采用DO-213AB/Plastic Melf包装,具有低热阻和高浪涌电流能力。它通常用于B6三相桥式配置的输入整流阶段。

Dual Automotive MOSFET with Protected Gate

MMFTN620KDW-AQ

MMFTN620KDW-AQ 是采用 SOT-363 封装的双 MOSFET。 在 25°C 时,两个 N 通道可提供最高 350 mA 的连续漏极电流、最大 60 V 的漏源电压,并且,在施加 4.5 V的电压时,仅产生小于 2 Ω的导通电阻。 作为一项特殊功能,它们的栅极可抵御高达 +/- 2 kV 的 ESD 电压,所以该物料非常适合具有高 ESD 冲击风险的应用,比如触摸屏的电源管理、控制和显示照明、小型直流电机和致动器线圈的驱动级等等。 由于其低栅极阈值电压和输入电容,该物料也可以可以直接从逻辑输出进行控制。 完全符合 AEC-Q101 标准。 总而言之,这是对驾驶汽车进行短途旅行具有小而重要的贡献,比如在假期中。

 

三相电源系统中的整流-模块化还是分立器件?

three-phase bridges

幸运的是,德欧泰克同时提供:

通孔式三相桥架,用于焊接,螺纹安装类型,带有快速接头,
或者,在节省空间的SMD封装中,6个分立半导体。
以下是所有这些类型的优点:



DBI25-16A
-    可焊在PCB上
-    孤立的外壳轮廓,可拧在散热器上或很容易夹住

DB35-16
-    高性能
-    将隔离的金属基板固定在散热器上

S5W
-    SMD轮廓DO-214AB/SMC用于自动组装到PCB上
-    性价比较高

用于光伏系统和高压电池存储的阻塞二极管

P2500Y

德欧泰克的 P2500Y 是一种理想的封闭二极管,用于光伏系统和高压电池存储。它提供了1600v的直流阻塞电压,2000 V的重复反向电压和25 mJ的雪崩额定值,用于抗短瞬变的鲁棒性。名义平均远期是25 A;由于环境温度在这些应用程序是高和冷却往往是一个问题,典型的直流电流负载被限制在大约10a。

数据表和上图显示了一种降低结热阻的方法,使其达到可能的最低值。作为一项特殊服务,德欧泰克可以提供已经根据图纸弯曲的引线。请与当地的德欧泰克销售办事处联系。

 

无线电动工具-电动工具产品中的电子设备概述

cordless power tools

人类的创造力和技能是任何产品的基本组成部分,只有使用正确的工具才能得到放大。

查看我们最新的应用说明,了解德欧泰克如何帮助提高效率,功率和电池寿命的无线电动工具项目。

设备模拟更接近真实生活- Spice模型提供额外的热特性

Spice

Software tools like Spice are widely used in electronics design and useful for simulation and optimization of circuits. Often the theoretical behaviour is, however, not matching to the later on real life testing, which requires in worst case a time consuming re-design. One reason for such mismatch is the lack of comprehensive thermal characteristics in Spice models, as offered by many suppliers. While e. g. the temperature behaviour of forward voltage and reverse leakage of semiconductor diodes are part of almost every Spice model, it is seldom provided for the voltage drift of Zener and TVS diodes, or the presumed constant current of CLDs (Current Limiting Diodes). And exactly that can cause an issue, when later the device is operated in the real circuit and gets unavoidable warm under load.

The Spice models provided by Diotec for its Zener and TVS diodes, CLDs but of course also all rectifiers are made with additional temperature characterisation.

Provided that Spice simulation is done with different temperature presettings, one can see the behaviour under real junction conditions and can adjust the circuit where necessary. The picture shows as an example the temperature behaviour of an uncompensated and a compensated CLD.

Spice models for Diotec products are accessible via www.diotec.com using simply the part search function.
Here just three examples for your testing:

ZMY18 [https://diotec.com/tl_files/diotec/files/spice/zmy18.zip]
P4SMAJ30A [https://diotec.com/tl_files/diotec/files/spice/p4smaj30a.zip]
CL10MD [https://diotec.com/tl_files/diotec/files/spice/cl10md.zip]