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參數(shù)資料
| 型號(hào)： | SP6125EK1L |
| 英文描述： | High-Voltage, Step Down Controller in TSOT6 |
| 中文描述： | 高電壓，降壓控制器在TSOT6步 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 536K |
| 代理商： | SP6125EK1L |
Mar22-07 RevC SP6125: TSOT-6 PFET Buck Controller
2007 Sipex Corporation
5
R1
200k, 1%
R2
SP6125
VFB
+
-
RZ2
200k
CZ2
130pF
CP1
2pF
Error Amplifier
Vref=0.6V
Vout
RZ
CZ
Figure 1- RZ and CZ in conjunction with internal
compensation components form a Type-III compensation
Loop Compensation Example 1- A converter
utilizing a SP6125 has a 8.2uH inductor and
two
22uF/5m
Determine whether Type-III compensation is
needed.
From equation (2) f
ESRZERO
= 1.45MHz. From
equation (3) f
DBPOLE
= 8.4kHz. Since the
condition specified in (1) is not met, Type-III
compensation has to be used by adding
external components RZ and CZ. Using
equation (4) CZ is calculated 95pF (use 100
pF). Following the guideline given in table 1,
a 2k
RZ should be used.
The steps followed in example 1 were used
to compensate the typical application circuit
shown on page 1. Satisfactory frequency
response of the circuit, seen in figure 2,
validates the above procedure.
ceramic
capacitor.
Loop Compensation Example 2- A converter
utilizing a SP6125 has a 8.2uH inductor and
a 150uF, 82m
Aluminum Electrolytic
capacitor.
Determine
compensation is needed.
From equation (2) f
ESRZERO
= 13kHz. From
equation (3) f
DBPOLE
= 4.5kHz. Since the
condition specified in (1) is not met, Type-III
compensation has to be used by adding
external components RZ and CZ. Using
equation (4) CZ is calculated 175pF (use
180 pF). Since
f
ESRZERO
÷
f
DBPOLE
is
approximately 3, RZ has to be set at 30k
.
whether
Type-III
Figure 2- Satisfactory frequency response of typical application circuit shown on page 1.
Crossover frequency fc is about 35kHz with a corresponding phase margin of 60 degrees. The
two sets of curves, which are essentially identical, correspond to load current of 1A and 2.5A.
General Overview
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6126_1 | Evaluation Board Manual |
| SP6126EB | Evaluation Board Manual |
| SP6126EK1 | Evaluation Board Manual |
| SP6126 | High-Voltage, Step Down Controller in TSOT6 |
| SP6126_07 | High-Voltage, Step Down Controller in TSOT6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6125EK1-L | 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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 |
| SP6125EK1-L/TR | 功能描述:電源管理IC開(kāi)發(fā)工具 High-Voltage Step Down Controller RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SP6125EK1L/TR1 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High-Voltage, Step Down Controller in TSOT6 |
| SP6126 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6126_07 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High-Voltage, Step Down Controller in TSOT6 |
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