參數(shù)資料
型號(hào)： TPA2100P1YZHR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 1 CHANNEL, AUDIO AMPLIFIER, PBGA16
封裝： 2.10 X 2.10 MM, GREEN, WCSP-16
文件頁(yè)數(shù)： 4/23頁(yè)
文件大?。?/td> 963K
代理商： TPA2100P1YZHR
Vdd SW
IN-
IN+
GND
OUT+
OUT-
VccOUT
VccIN
CIN
SD
SDa
GAIN
Digital
BaseBand
Analog
Baseband
or
CODEC
VIN
2.5Vto
5.5 V
Vref
BST
10 nF
1 F
m
4.7 H
m
10 F
m
10~20 W
10 F
m
0.1~2 F
m
1 F
m
R
BOOST CONVERTER
INDUCTOR SELECTION
SURFACE MOUNT INDUCTORS
TPA2100P1 INDUCTOR EQUATIONS
SLOS595 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Figure 17. Application Schematic with Resistor – Speaker Load Configuration
There are two main passive components necessary for the functioning of a boost converter. The boost inductor
stores current, and the boost capacitor stores charge. When the Class-D amplifier depletes the charge in the
boost capacitor, the boost inductor charges it back up with the stored current. The cycle of charge/discharge
occurs at a frequency of fboost.
The following is a list of terms and definitions used in the boost equations found in this document.
C
Minimum boost capacitance required for a given ripple voltage on VCC
L
Boost inductor
fBOOST
Switching frequency of the boost converter.
ICC
Current pulled by the Class-D amplifier from the boost converter.
IL
Average current through the boost inductor.
VCC
Boost voltage. Generated by the boost converter (VCCOUT). Voltage supply for the Class-D
amplifier (VCCIN).
VDD
Supply voltage to the IC.
ΔIL
Ripple current through the inductor.
ΔV
Ripple voltage of VCC due to capacitance. VCC is the voltage on the VccOUT and VccIN pins.
Working inductance decreases as inductor current increases. If the drop in working inductance is severe enough,
it may cause the boost converter to become unstable, or cause the TPA2100P1 to reach its current limit at a
lower output voltage than expected. Inductor vendors specify currents at which inductor values decrease by a
specific percentage. This can vary by 10% to 35%. Inductance is also affected by dc current and temperature.
Inductor current rating is determined by the requirements of the load. The inductance is determined by two
factors: the minimum value required for stability and the maximum ripple current permitted in the application.
12
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2100P1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA2100P1YZHT 功能描述:音頻放大器 19Vpp Mono Class D Audio Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TPA2100P1YZHT 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC
TPA21CCGPC0 制造商:TE Connectivity 功能描述:Switch Push Button N.O. DPST Round Plunger 20VAC 20VDC 0.4VA Momentary Contact PC Pins Thru-Hole Loose Piece
TPA21CCGRA0 功能描述:按鈕開關(guān) SWITCH PB 2XSPST MOM RND BLK RoHS:否 制造商:C&K Components 觸點(diǎn)形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級(jí):IP 40 端接類型:Solder 觸點(diǎn)電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級(jí):UL 94 V-0
TPA21CCGRA004 功能描述:按鈕開關(guān) FLUSHBUTTON RoHS:否 制造商:C&K Components 觸點(diǎn)形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級(jí):IP 40 端接類型:Solder 觸點(diǎn)電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級(jí):UL 94 V-0
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