| 型號 | 品牌 | 批號 | 數量 | 封裝 | 備注 |
| L6599 | ST | 22+ | 5000000 | SOP-16 | Original 全新原裝 |
L6599
pdf規格書
L6599High-voltage resonant controller
L6599Device description
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 ON\OFF 180° out-of-phase for exactly the same time.
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.
L6599Features
■ 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
L6599Applications
■ LCD and PDP TV
■ Desktop PC, entry-level server
■ Telecom SMPS
■ AC-DC adapter, open frame SMPS
L6599高壓諧振控制器
L6599產品描述
L6599雙頭控制器具體的諧振半橋拓撲。它提供了50%的補充責任周期:
高端開關和下部開關驅動\ 180°不同相的完全相同的時間。
驅動高端開關使用引導方法,IC集成了一個高壓浮動結構能夠承受超600Vsynchronous-driven高壓DMOS結構取代了外部快速恢復自舉二極管。
集成電路使設計師設置變頻器的工作頻率范圍的外部可編程振蕩器。
在啟動,為了防止不受控制的侵入電流,開關頻率開始從一個可編程的最大價值,
逐漸衰減,直到它到達穩態值取決于控制回路。這個移頻非線性最小化輸出
電壓調整過度,其持續時間也可編程。
集成電路可以被迫進入一個控制脈沖模式在輕載運行,以保持轉換器的輸入
消費降到最低。
集成電路的功能包括not-latched禁用校驗輸入電流滯后有用功率測序或斷電保護、
電流感覺輸入OCP頻移和延遲關機自動重啟。
更高層次OCP纏住了IC如果第一級保護不足以控制主電流。
他們的結合提供完整的過載和短路保護。一個額外的禁用輸入(DIS)
可以輕松實現OTP和/或OVP。
一個接口提供的PFC控制器,使在故障條件下,關掉pre-regulator如OCP關閉和DIS高,
或在脈沖模式操作。
L6599特性
■50%責任周期,變頻控制諧振半橋
■高精度振蕩器
■高達500千赫工作頻率
■二級OCP:頻移和閂鎖關閉
■與PFC控制器
■界面鎖定在輕負荷禁用輸入
■脈沖模式操作
■輸入開機/測序或斷電保護
■為單調非線性軟啟動輸出電壓上升
■600年V-rail兼容高端門驅動器集成自舉二極管和高dV / dt免疫力
■-300/800馬高端和下部門司機UVLO下拉
■DIP-16,SO-16N包
L6599應用程序
■LCD,PDP電視
■桌面PC,入門級服務器
■電信smp
■交直流適配器,開放式smp
原裝進口，現貨庫存，歡迎來電咨詢：聯系方式如下
名稱： 深圳奧尼拓電子有限公司
地址： 深圳市福田區中航路都會軒3707-3708室
電話： 19539046113
QQ : 2885745253
企業郵箱：2885745253@qq.com
聯系人： 廖麗玲
來源：深圳市奧尼拓電子有限公司
網址：http://www.aunytorchips.com/
