《電子技術應用》
您所在的位置:首頁 > 電源技術 > 解決方案 > STSTEVAL-ISA018V1150W開關電源解決方案

STSTEVAL-ISA018V1150W開關電源解決方案

2012-01-05
作者:ST公司

ST公司的STEVAL-ISA018V1評估板是150W開關電源解決方案,采用高壓諧振控制器L6599,輸入電壓是185V-265VAC或85V-185VAC,輸出電壓24V+/-2%,輸出功率150W,峰值功率240W,安全性滿足EN60950,EMI滿足EN55014.本文介紹了L6599主要特性,方框圖, 采用L6599和L6563 90W適配器電路圖以及STEVAL-ISA018V1評估板主要特性,電路圖和材料清單.

The L6599 is a double-ended controller specific for the resonant half-bridge topology. It provides 50 % complementary duty cycle: the high-side switch and the low-side switch are driven ONOFF 180° out-of-phase for exactly the same time.

Output voltage regulation is obtained by modulating the operating frequency. A fixed deadtime inserted between the turn-OFF of one switch and the turn-ON of the other one guarantees soft-switching and enables high-frequency operation.

To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than 600 V with a synchronous-driven high-voltage DMOS that replaces the external fast-recovery bootstrap diode.

The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.

At start-up, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop. This frequency shift is non linear to minimize output voltage overshoots; its duration is programmable as well.

The IC can be forced to enter a controlled burst-mode operation at light load, so as to keep converter’s input consumption to a minimum.

IC’s functions include a not-latched active-low disable input with current hysteresis useful for power sequencing or for brownout protection, a current sense input for OCP with frequency shift and delayed shutdown with automatic restart.

A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current. Their combination offers complete protection against overload and short circuits. An additional latched disable input (DIS) allows easy implementation of OTP and/or OVP.

An interface with the PFC controller is provided that enables to switch off the pre-regulator during fault conditions, such as OCP shutdown and DIS high, or during burst-mode operation.

L6599主要特性:

■ 50 % duty cycle, variable frequency control of resonant half-bridge

■ High-accuracy oscillator

■ Up to 500 kHz operating frequency

■ Two-level OCP: frequency-shift and latched shutdown

■ Interface with PFC controller

■ Latched disable input

■ Burst-mode operation at light load

■ Input for power-ON/OFF sequencing or brownout protection

■ Non-linear soft-start for monotonic output voltage rise

■ 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity

■ -300/800 mA high-side and low-side gate drivers with UVLO pull-down

■ DIP-16, SO-16N packages

L6599應用:

■ LCD and PDP TV

■ Desktop PC, entry-level server

■ Telecom SMPS

■ AC-DC adapter, open frame SMPS

圖1.L6599方框圖

圖2.采用L6599和L6563 90W適配器電路圖

STEVAL-ISA018V1評估板

This user manual describes a high efficiency solution for industrial power supplies with a continuous output power of 150 W and peak power up to 240 W. It takes advantage of the resonant approach to minimize switching losses, resulting in higher than 90% efficiency. The topology is based on half-bridge and operated in a resonant fashion by means of a resonant LC tank, driven by the L6599 dedicated controller.

The board provides one regulated output, VO=24 V with IO=6 A, and an overload capability of up to IO=10 A. Output voltage and current are controlled by the TSM1011 constant voltage and constant current controller, providing square output regulation, while the overload is managed by thermal protection (PTC) on the output rectifiers.


圖3. STEVAL-ISA018V1外形圖

STEVAL-ISA018V1主要指標:


圖4. STEVAL-ISA018V1電路圖

STEVAL-ISA018V1材料清單:




詳情請見:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00108892.pdf

http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/CD00238992.pdf



本站內容除特別聲明的原創文章之外,轉載內容只為傳遞更多信息,并不代表本網站贊同其觀點。轉載的所有的文章、圖片、音/視頻文件等資料的版權歸版權所有權人所有。本站采用的非本站原創文章及圖片等內容無法一一聯系確認版權者。如涉及作品內容、版權和其它問題,請及時通過電子郵件或電話通知我們,以便迅速采取適當措施,避免給雙方造成不必要的經濟損失。聯系電話:010-82306118;郵箱:aet@chinaaet.com。
主站蜘蛛池模板: 99久久亚洲国产高清观看 | 久久99精品久久久久久 | 国产一区二区成人 | 国产成人无精品久久久久国语 | 精品久久久久久中文字幕一区 | 国产精品无码2021在线观看 | 精品久久久久久无码中文字幕 | 国内精品日本久久久久影院 | 欧美久久精品 | 欧美洲精品亚洲精品中文字幕 | 久久福利资源站免费观看i 久久福利资源国产精品999 | 一级毛片免费 | 欧美在线成人午夜网站 | 精品国产区 | 九月婷婷开心九月 | www.日韩色| 久久久国产视频 | 好了016av第四电影综合站 | 久久99国产精品久久99无号码 | 欧美日韩免费在线视频 | 免费看国产精品久久久久 | 久久香蕉国产线看观看99 | 欧美一级视 | 国产福利在线永久视频 | 国产精品久久久久久久久久久搜索 | 国产色视频一区二区三区 | 91久久婷婷国产综合精品青草 | 九七电影院97网手机版不用下载 | 免费亚洲视频 | 99免费看 | 日韩欧美中文字幕出 | 国产精品午夜在线观看 | 欧美视频不卡一区二区三区 | 激情综合五月天 | 我爱52av好色| 精品久久一区二区 | 久久99视频 | 九九热视频免费在线观看 | 日本视频免费播放 | 久久毛片免费 | 埃及艳后成人 |