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参数资料
| 型号： | SP6126EB |
| 厂商： | Exar Corporation |
| 文件页数： | 5/14页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP6126 |
| 标准包装： | 1 |
| 系列： | * |
GENERAL OVERVIEW
Loop Compensation Example 1- A converter
utilizing a SP6126 has a 6.8uH inductor and
a 22uF/5m ceramic capacitor. Determine
whether Type-III compensation is needed.
Loop Compensation Example 2- A converter
utilizing a SP6126 has a 6.8uH inductor and
a 150uF, 82m Aluminum Electrolytic
capacitor. Determine whether Type-III
compensation is needed.
From equation (2) f ESRZERO = 1.45MHz. From
equation (3) f DBPOLE = 13 kHz. 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 61.2pF (use 62
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
From equation (2) f ESRZERO = 13kHz. From
equation (3) f DBPOLE = 5 kHz. 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 160pF (use
150 pF). Since f ESRZERO ÷ f DBPOLE is
approximately 3, RZ has to be set at 30k .
shown on page 1. Satisfactory frequency
response of the circuit, seen in figure 2,
validates the above procedure.
Figure 2- Satisfactory frequency response of typical application circuit shown on page
1. Crossover frequency fc is 80kHz with a corresponding phase margin of 65 degrees.
Nov07 -08 Rev G
SP6126: TSOT-6 PFET Buck Controller
5
? 200 8 Exar Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6126EK1 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6126EK1L | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High-Voltage, Step Down Controller in TSOT6 |
| SP6126EK1-L | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6126EK1L/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High-Voltage, Step Down Controller in TSOT6 |
| SP6126EK1-L/TR | 功能描述:电压模式 PWM 控制器 High-Voltage Step Down Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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