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參數(shù)資料
| 型號： | FAN5037 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Isolated Flyback Switching Regulator with 9V Output |
| 中文描述： | 隔離反激式開關(guān)穩(wěn)壓9V輸出 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 101K |
| 代理商： | FAN5037 |
PRODUCT SPECIFICATION
FAN5037
REV. 1.0.3 9/26/01
9
Power and Ground Connections
The connection of VCCA to the 5V power supply plane
should be short and bypassed with a 0.1μF directly at the
VCCA pin of the FAN5037. The ideal connection would be a
via down to the 5V power plane. A similar arrangement
should be made for the VCCP pin that connects to +12V.
Each ground should have a separate via connection to the
ground plane below.
A 12V power supply is used to bias the VCCP. A 47
resis-
tor is used to limit the transient current into VCCP. A 1uF
capacitor filter is used to filter the VCCP supply and source
the transient current required to charge the MOSFET gate
capacitance. This method provides sufficiently high gate bias
voltage to the MOSFET (V
GS
), and therefore reduces
R
DS(ON)
of the MOSFET and its power loss.
Figure 4 provides about 5V of gate bias which works well
when using typical logic-level MOSFETs. Non-logic-level
MOSFETs should not be used because of their higher
R
DS(ON)
.
MOSFET Gate Bias
Figure 4. 12V Gate Bias Configuration
V
OUT
+5V
+12V
VCCP
47
Q1
L2
R
SENSE
C
BULK
D1
1
μ
F
GNDP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN5037M | Analog IC |
| FAN5038 | Dual Voltage Controller for DSP Power |
| FAN5038M | Current-Mode SMPS Controller |
| FAN5056MV85 | High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms |
| FAN5059 | High Performance Programmable Synchronous |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5037_WBA3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5037M | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Switching Controller adustable RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| FAN5037M_Q | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Switching Controller adustable RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| FAN5037MX | 功能描述:DC/DC 開關(guān)控制器 Switching Controller adustable RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| FAN5038 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Dual Voltage Controller for DSP Power |
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