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參數(shù)資料
| 型號： | LM5046MHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | TSSOP-28 |
| 文件頁數(shù)： | 19/32頁 |
| 文件大?。?/td> | 888K |
| 代理商： | LM5046MHX |
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CURRENT SENSE
The CS pin receives an input signal representative of its
transformer’s primary current, either from a current sense
transformer or from a resistor located at the junction of source
21, respectively. In both the cases, the filter components R
F
and C
F should be located as close to the IC as possible, and
the ground connection from the current sense transformer, or
R
SENSE should be a dedicated trace to the appropriate GND
pin. Please refer to the layout section for more layout tips.
The current sense components must provide a signal >
710mV at the CS pin during an over-load event. Once the
voltage on the CS pin crosses the current limit threshold, the
current sense comparator terminates the PWM pulse and
starts to charge the RES pin. Depending on the configuration
of the RES pin, the LM5046 will eventually initiate a hiccup
mode restart or be in continuous current limit.
30147815
FIGURE 20. Transformer Current Sense
30147822
FIGURE 21. Resistor Current Sense
www.national.com
26
LM5046
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM5046MHX/NOPB | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5046SQ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM5046 Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5046SQ/NOPB | 功能描述:電流型 PWM 控制器 Phase-Shifted Full- Bridge PWM Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5046SQX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM5046 Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5046SQX/NOPB | 功能描述:IC PWM CTRLR FULL BRIDG 28LLP RoHS:是 類別:集成電路 (IC) >> PMIC - AC-DC 轉換器，離線開關 系列:PowerWise® 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
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