參數(shù)資料
型號(hào)： TPS40056PWPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： PLASTIC, HTSSOP-16
文件頁(yè)數(shù)： 6/32頁(yè)
文件大小： 747K
代理商： TPS40056PWPRG4
TPS40056
SLVS612 APRIL 2006
14
www.ti.com
APPLICATION INFORMATION
Figure 5
VC
PWM MODULATOR RELATIONSHIPS
VS
D = VC / VS
MODULATOR GAIN
vs
SWITCHING FREQUENCY
Modulator
Gain
dB
Figure 6
fSW Switching Frequency Hz
100
1 k
10 k
100 k
ESR Zero, + 1
LC Filter, 2
AMOD = VIN / VS
Resultant, 1
A Type III topology, shown in Figure 7, has two zero-pole pairs in addition to a pole at the origin. The gain and
phase boost of a Type III topology is shown in Figure 8. The two zeros are used to compensate the L-CO double
pole and provide phase boost. The double pole is used to compensate for the ESR zero and provide controlled
gain roll-off. In many cases the second pole can be eliminated and the amplifier’s gain roll-off used to roll-off
the overall gain at higher frequencies.
RBIAS
Figure 7. Type III Compensation Configuration
UDG03099
+
R1
R3
C3
C1
R2
7
8
EA_REF
VOUT
COMP
VFB
C2
(optional)
Figure 8. Type III Compensation Gain and Phase
GAIN
180
°
90
°
270
°
PHASE
+ 1
1
0 dB
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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TPS40057PWP 功能描述:DC/DC 開關(guān)控制器 Wide Input Sync Buck src/sink w/prebias RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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TPS40057PWPR 功能描述:DC/DC 開關(guān)控制器 Wide Input Sync Buck src/sink w/prebias RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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