參數(shù)資料
型號(hào)： MPZ2012S101A
廠商： Texas Instruments, Inc.
英文描述： 2.7-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER
中文描述： 2.7鎢恒定輸出功率D類音頻放大器，具有集成升壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 8/28頁(yè)
文件大小： 753K
代理商： MPZ2012S101A
www.ti.com
(
)
CC
DD
boost
CC
I
V
C = 2
V
f
V
-
D
(4)
(
)
CC
DD
boost
CC
I
V
C =
V
f
V
-
D
(5)
TPA2013D1
SLOS520 – AUGUST 2007
TPA2013D1 CAPACITOR EQUATIONS
The value of the boost capacitor is determined by the minimum value of working capacitance required for stability
and the maximum voltage ripple allowed on VCC in the application. The minimum value of working capacitance is
10
μF. Do not use any component with a working capacitance less than 10 μF.
For X5R or X7R ceramic capacitors, Equation 4 shows the relationship between the boost capacitance, C, to
load current, load voltage, ripple voltage, input voltage, and switching frequency (ICC, VCC, ΔV, VDD, fboost
respectively). Insert the maximum allowed ripple voltage into Equation 4 to solve for C. A factor of 2 is included
to implement the rules and specifications listed earlier.
For aluminum or tantalum capacitors, Equation 5 shows the relationship between he boost capacitance, C, to
load current, load voltage, ripple voltage, input voltage, and switching frequency (ICC, VCC, ΔV, VDD, fboost
respectively). Insert the maximum allowed ripple voltage into Equation 5 to solve for C. Solve this equation
assuming ESR is zero.
Capacitance of aluminum and tantalum capacitors is normally not sensitive to applied voltage so there is no
factor of 2 included in Equation 5. However, the ESR in aluminum and tantalum capacitors can be significant.
Choose an aluminum or tantalum capacitor with ESR around 30 m
. For best perfornamce using of tantalum
capacitor, use at least a 10 V rating. Note that tantalum capacitors must generally be used at voltages of half
their ratings or less.
16
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Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s): TPA2013D1
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MPZ2012S101AT000 制造商:TDK 功能描述:
MPZ2012S101ATD25 制造商:TDK 功能描述:FERRITE CHIP BEADS - Tape and Reel
MPZ2012S102A 功能描述:電磁干擾濾波珠子、扼流圈和陣列 0805 1000ohms 100MHz Rdc 0.15ohms 1.5A RoHS:否 制造商:AVX 阻抗: 最大直流電流:35 mA 最大直流電阻: 容差: 端接類型:SMD/SMT 電壓額定值:25 V 工作溫度范圍:- 25 C to + 85 C 封裝 / 箱體:0603 (1608 metric)
MPZ2012S102AT 制造商:TDK 功能描述:Ferrite Beads Multi-Layer Chip Bead 1KOhm 25% 100MHz 1.5A 0805 制造商:TDK 功能描述:MPZ Series 1 kO 25 % 100 MHz 1.5 A 0805 Multi-Layer Chip Ferrite Bead 制造商:TDK 功能描述:MPZ Series 1 kO ?25 % 100 MHz 1.5 A 0805 Multi-Layer Chip Ferrite Bead
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