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參數(shù)資料
| 型號： | RT9205APS |
| 廠商： | Richtek Technology Corporation |
| 英文描述： | Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
| 中文描述： | 雙穩(wěn)壓器-同步降壓PWM型DC - DC和線性控制器 |
| 文件頁數(shù)： | 14/15頁 |
| 文件大?。?/td> | 227K |
| 代理商： | RT9205APS |
RT9205/A
Preliminary
14
DS9205/A-08 March 2007
www.richtek.com
The power components and the PWM controller should
be placed firstly. Place the input capacitors, especially the
high-frequency ceramic decoupling capacitors, close to
the power switches. Place the output inductor and output
capacitors between the MOSFETs and the load. Also
locate the PWM controller near by MOSFETs.
A multi-layer printed circuit board is recommended. Figure
13 shows the connections of the critical components in
the converter. Note that the capacitors CIN and COUT
represent numerous physical capacitors. Use a dedicated
grounding plane and use vias to ground all critical
components to this layer. Apply another solid layer as a
power plane and cut this plane into smaller islands of
common voltage levels. The power plane should support
the input power and output power nodes. Use copper filled
polygons on the top and bottom circuit layers for the
PHASE node, but it is not necessary to oversize this
particular island. Since the PHASE node is subjected to
very high dV/dt voltages, the stray capacitance formed
between these islands and the surrounding circuitry will
tend to couple switching noise. Use the remaining printed
circuit layers for small signal routing. The PCB traces
between the PWM controller and the gate of MOSFET
and also the traces connecting source of MOSFETs
should be sized to carry 2A peak currents.
Figure 13
+
+
LOAD
+
VCC
RT9205/A
GND
FB
LGATE
UGATE
IL
IQ1
V
OUT
Q2
Q1
IQ2
5V
GND
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相關代理商/技術參數(shù) |
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|---|---|
| RT9205GS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
| RT9205PS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
| RT9206 | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:High Efficiency, Synchronous Buck with Dual Linear Controllers |
| RT9206GS | 功能描述:IC REG TRPL BCK/LINEAR 16SOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲:降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關:300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅動器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* |
| RT9206PS | 制造商:Richtek Technology Corporation 功能描述: |
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