|
NXP 公司的SSL2109T是高壓集成電路,是GreenChip LED照明控制器,具有小PCB面積,效率高達(dá)95%.參考設(shè)計(jì)能工作在230V(50 Hz)或120VAC(50 Hz 或60 Hz),輸出電壓30V或更高,最大輸出功率23W.本文介紹了SSL2109T主要特性,方框圖,典型應(yīng)用電路以及參考設(shè)計(jì)板主要特性和指標(biāo),電路圖,材料清單和PCB布局圖. SSL2109T主要特性 •小型印刷電路板（PCB），和緊湊的解決方案 •高效率（高達(dá)95％） •易于集成，具有多保護(hù)功能 •經(jīng)濟(jì)的電子物料清單（BOM） 該IC是SSL2108X系列的補(bǔ)充，但沒(méi)有內(nèi)部開(kāi)關(guān)，采用一個(gè)內(nèi)部高壓電流源，從高壓電源直接啟動(dòng)。dV/dt電源和漏電電容耦合，或任何其他的輔助電源一起被使用。此功能提供了應(yīng)用設(shè)計(jì)的充分的靈活性。內(nèi)部鉗位來(lái)限制電源電壓。 該IC提供準(zhǔn)確的輸出電流控制（在5％以內(nèi)的LED電流精度）。 可使用脈沖寬度調(diào)制（PWM）調(diào)光操作，并具有多種保護(hù)功能，包括便捷的LED溫度反饋。 
圖1 SSL2109T方框圖
圖2 SSL2109T基本應(yīng)用框圖 SSL2109T性能 • LED控制器IC用于驅(qū)動(dòng)LED串，或高電壓LED模塊（從整流電源） •高效率開(kāi)關(guān)模式的一部分，驅(qū)動(dòng)器產(chǎn)品系列降壓 •控制器，具有功率效率邊界傳導(dǎo)操作模式 –freewheel二極管沒(méi)有反向恢復(fù)損耗 –開(kāi)關(guān)導(dǎo)通零電流開(kāi)關(guān)（ZCS） –開(kāi)關(guān)關(guān)閉的零電壓或山谷開(kāi)關(guān) –電感值和大小較小化 –直接PWM調(diào)光 •通過(guò)逐周期電流控制，快速瞬態(tài)響應(yīng) –可以忽略不計(jì)的LED電流電源紋波和總電容值 – LED電流沒(méi)有過(guò)流，或低流 –所需LED的正向電壓沒(méi)有分級(jí) •內(nèi)部保護(hù) –欠壓鎖定（UVLO） –前沿消隱（LEB） –過(guò)流保護(hù)（OCP） –短繞組保護(hù)（SWP） –內(nèi)部過(guò)熱保護(hù)（OTP） –掉電保護(hù) –輸出短路保護(hù)（OSP） •低元件數(shù)量LED驅(qū)動(dòng)器解決方案 –沒(méi)有PWM調(diào)光所需的調(diào)光開(kāi)關(guān)，和高邊驅(qū)動(dòng)器 –單一的NTC，容易外部溫度保護(hù) –軟啟動(dòng)的功能選項(xiàng) –在待機(jī)時(shí)，兼容內(nèi)置指示燈墻壁開(kāi)關(guān) – IC的壽命很容易匹配，超過(guò)LED燈的壽命
圖3 SSL2109T典型應(yīng)用電路圖
圖4 SSL2109參考板電路圖 SSL2109T應(yīng)用 SSL2109T可用于緊湊，小型的LED燈及單電源輸入電壓，精確的固定電流輸出。主電源輸入電壓包括，100V，120V和230V（交流）。使用PWM信號(hào)，其輸出信號(hào)可調(diào)制,其電壓的范圍由外部元件決定。 SSL2109參考板 SSL2109是恩智浦半導(dǎo)體的控制器IC，旨在提供低成本，小尺寸的LED驅(qū)動(dòng)器。該參考板工作電壓為230V或120V（交流），使用30V或更高的輸出電壓。 該參考板優(yōu)化了230V（50Hz）或120V（50Hz或60Hz）的主電源板。除了主電源電壓的優(yōu)化外，該板可以與多個(gè)LED一起工作，或與一個(gè)具有較高正向電壓的LED模塊一起工作。其主電源電壓的連接不同于其他一般的評(píng)估/參考板。電源與螺絲連接器J6連接。 The SSL2109T is a high-voltage Integrated Circuit (IC), intended to drive LED lamps in general lighting applications. SSL2109T主要特性: •Small Printed-Circuit Board (PCB) footprint, and compact solution •High efficiency (up to 95 %) •Ease of integration and many protection features •Low electronic Bill Of Material (BOM) The IC is supplementary to the SSL2108X series, but without internal switch. The IC range has been designed to start up directly from the HV supply by an internal high-voltage current source. Thereafter, the dV/dt supply is used with capacitive coupling from the drain, or any other auxiliary supply. This functionality provides full flexibility in the application design. An internal clamp limits the supply voltage. The IC provides accurate output current control to within 5 % LED current accuracy. The IC can be operated using Pulse-Width Modulation (PWM) dimming and has many protection features including easy LED temperature feedback. SSL2109T性能和優(yōu)勢(shì): LED controller IC for driving strings of LEDs or high-voltage LED modules from a rectified mains supply part of a high-efficiency switch mode buck driver product family Controller that has power-efficient boundary conduction mode of operation with: No reverse recovery losses in freewheel diode Zero Current Switching (ZCS) for switch turn-on Zero voltage or valley switching for switch turn-off Minimal required inductance value and size Direct PWM dimming possible Fast transient response through cycle-by-cycle current control: Negligible AC mains ripple in LED current and minimal total capacitor value No over or undershoots in the LED current No binning on the LED forward voltage required Internal Protections: UnderVoltage LockOut (UVLO) Leading-Edge Blanking (LEB) OverCurrent Protection (OCP) Short-Winding Protection (SWP) Internal OverTemperature Protection (OTP) Brownout protection Output Short Protection (OSP) Low component count (see Figure 3) LED driver solution: No dim switch and high-side driver required for PWM dimming Easy external temperature protection with a single NTC Option for soft-start function Compatible with wall switches with built-in indication light during standby IC lifetime easily matches or surpasses LED lamp lifetime SSL2109T應(yīng)用: The SSL2109T is intended for compact LED lamps with accurate fixed current output for single mains input voltages. Mains input voltages include 100 V, 120 V and 230 V (AC). The output signal can be modulated using a PWM signal. The power range is determined by external components.
圖1.SSL2109T方框圖
圖2.SSL2109T基本應(yīng)用框圖
圖3.SSL2109T典型應(yīng)用電路圖 SSL2109參考板 This document describes the performance, technical data and the connection of the SSL2109 reference board. The SSL2109 is an NXP Semiconductors controller IC intended to provide a low cost, small form factor LED driver. The reference board is intended to operate at 230 V or 120 V (AC), using an output voltage of 30 V or greater. The board is optimized for a 230 V (50 Hz) or 120 V (50 Hz or 60 Hz) mains supply. In addition to the mains voltage optimization, the board is designed to work with multiple LEDs or an LED module with a high forward voltage. Mains connection of the reference board is different from other general evaluation/reference boards. Connect the mains to the screw connector J6.
圖4.SSL2109參考板外形圖 SSL2109參考板技術(shù)指標(biāo):
圖5.SSL2109參考板電路圖 SSL2109參考板材料清單:
SSL2109參考板電感指標(biāo):
圖6.SSL2109參考板PCB布滿圖 詳情請(qǐng)見(jiàn): 
SSL2109T.pdf
(583.9 KB)
UM10512.pdf
(1.16 MB)
來(lái)源：網(wǎng)絡(luò) |
