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参数资料
| 型号： | RT9204CS |
| 厂商： | Richtek Technology Corporation |
| 元件分类： | 线性稳压 |
| 英文描述： | Dual Regulator - Standard Buck PWM DC-DC and Linear Power Controller |
| 中文描述： | 双稳压器-标准降压PWM型DC - DC与线性电源控制器 |
| 文件页数： | 4/14页 |
| 文件大小： | 276K |
| 代理商： | RT9204CS |
RT9204
Preliminary
www.richtek-ic.com.tw
DS9204-00 February 2002
12
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.
Fig.11 shows the connections of the critical
components in the converter. Note that the capacitors
CIN and COUT each of them represents 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 island 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.
Fig. 11
+
LOAD
RT9204
VCC
GND
FB
UGATE
VOUT
IQ1
IL
Q1
IQ2
5V
GND
PHASE
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相关代理商/技术参数 |
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| RT9204GS | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual Regulators - Standard Buck PWM DC-DC and Linear Controller |
| RT9204PS | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual Regulators - Standard Buck PWM DC-DC and Linear Controller |
| RT9205 | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
| RT9205/ACS | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
| RT9205_07 | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller |
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