參數(shù)資料
型號: TPS60242DGKR
廠商: Texas Instruments, Inc.
英文描述: 170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
中文描述: 170 - uVrms零紋波開關(guān)電容升降壓轉(zhuǎn)換器的VCO的電源
文件頁數(shù): 15/20頁
文件大?。?/td> 377K
代理商: TPS60242DGKR
TPS60240, TPS60241
TPS60242, TPS60243
SLVS372B
JUNE 2001
REVISED JANUARY 2002
15
www.ti.com
APPLICATION INFORMATION
TPS60241
C1+
VIN
C1
1
μ
F
C2
1
μ
F
C1
GND
VOUT
C2+
C2
EN
CI
1
μ
F
GND
3.3 V
5 V
CO
1
μ
F
VCO
VCC
GND
Figure 31. 5-V Low-Noise VCO Supply From 3.3-V Input
TPS60240
C1+
VIN
C1
1
μ
F
C2
1
μ
F
C1
GND
VOUT
C2+
C2
EN
GND
2 V
3.3 V
CO
1
μ
F
VO
GND
CI
1
μ
F
Figure 32. 2-V to 3.3-V Low-Noise Converter
output voltage ripple
The output voltage ripple depends on the capacitors used. Table 1 illustrates the dependence between output
voltage ripple and capacitor selection.
Table 1. Output Voltage Ripple and Capacitor Selection
CI
CO
C1
C2
OUTPUT VOLTAGE RIPPLE
[
μ
Vrms]
288
212
183
272
185
1
μ
F
2.2
μ
F
4.7
μ
F
4.7
μ
F
1
μ
F
1
μ
F
2.2
μ
F
4.7
μ
F
1
μ
F
4.7
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
NOTE: VI = 3.3 V, VO = 5 V, RL = 500
, TA = 25
°
C
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