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參數(shù)資料
| 型號： | AAT1160 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Step Up Current Mode PWM Converter with 4+1 Operational Amplifiers |
| 中文描述： | 升壓電流模式PWM轉(zhuǎn)換器，具有4 1運算放大器 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 372K |
| 代理商： | AAT1160 |
Advanced Analog Technology, Inc.
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Advanced Analog Technology, Inc
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Page 11 of 14 V 1.0
AAT1160
0.04*1.25V, or 50mV. Error amplifier output
drives 50mV*105
μ
s, or 6.25
μ
A, across
R to
provide transient gain. Since the current-sense
transresistance is 0.275V/A, the value of
R that
would allow the required load-step swing is as
follows:
R =0.275I
IND(PK)
/6.25
μ
A
BLOCK DIAGRAM
In a step-up DC-to-DC converter, if L
IDEAL
is used,
output current would relate to inductor current as:
I
IND(PK)
=1.25I
OUT
/(1-D)=1.25I
OUT
*
V /
IN
V
Therefore, for a 500mA output load step with
V =2.5V and
V =5V:
R =[1.25(0.75*0.5*5)/2)]/6.25
μ
A=18.7k
Bandgap &
soft start
1.24v
Slope compensation
∑
current sense
Control
Logic
Driver
oscillator
Comparator
Error amplifier
Clock
5u
EO
IN1
FREQ
CIN+
GND
GO3
GO1
V
DD1
GND1
SW
SHDN
SHDN
Thermal SHDN
Fault Detect
1.0v
1.0v
V
DD
Com
Gamma2
Gamma3
Gamma4
GO2
GO4
GI3
GI4
Gamma1
COUT
GI2
GI1
V
DD1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1160IRN-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1161 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:13.2V Input, 3A Step-Down Converter |
| AAT1162 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:12V, 1.5A Step-Down DC/DC Converter |
| AAT1162_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:12V, 1.5A Step-Down DC/DC Converter |
| AAT1162IRN-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
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