參數(shù)資料
型號(hào)： TPS40090QPWRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO24
封裝： GREEN, PLASTIC, TSSOP-24
文件頁(yè)數(shù)： 3/23頁(yè)
文件大?。?/td> 309K
代理商： TPS40090QPWRQ1
RT - Timing Resistance - k
SWITCHING FREQUENCY
vs
TIMING RESISTANCE
0
10000
100
50
100
150
200
250
300
f S
W
-
Switching
Frequency
-
kHz
R
DROOP +
2500 N
PH
V
DROOP
I
OUT
R
CS
V
REF
V
OUT
+
2500 N
PH
V
DROOP
V
CS1 ) VCS2 ) VCS3 ) VCS4
R2
R1 ) R2
SLUS845C
– JUNE 2008 – REVISED MAY 2011
The switching frequency of the controller can be synchronized to an external clock applied to the EN/SYNC pin.
The external frequency should be somewhat higher than the free-running clock frequency for synchronization to
take place.
Figure 3.
Setting the Output Voltage Droop
In many applications, the output voltage of the converter is intentionally allowed to droop as load current
increases. This approach (sometimes referred to as active load line programming) allows for better use of the
regulation window and reduces the amount of the output capacitors required to handle the same load current
step. A resistor from the REF pin to the DROOP pin sets the desired value of the output voltage droop.
where:
(9)
VDROOP is the value of droop at maximum load current IOUT
NPH is number of phases
RCS is the current-sense resistor value
2500
is the inversed value of transconductance from the current sense pins to DROOP(1)
VCSx, are the average voltages on the current sense pins
(1)
IDROOP is relatively linear vs VCS and is typically 40 μA at VCS = 100 mV. Above VCS = 100 mV, IDROOP becomes nonlinear, rolls off, and
saturates to approximately 50
μA to 65 μA when VCS > 200 mV (see Figure 6). Thus, above 100 mV, Equation 9 is not accurate.
Copyright
2008–2011, Texas Instruments Incorporated
11
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相關(guān)代理商/技術(shù)參數(shù)
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TPS40090RHDR 功能描述:DC/DC 開(kāi)關(guān)控制器 4 Ch Multiph Buck DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40090RHDRG4 功能描述:DC/DC 開(kāi)關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40090RHDT 功能描述:DC/DC 開(kāi)關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40090RHDTG4 功能描述:DC/DC 開(kāi)關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40091 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH FREQUENCY MULTIPHASE CONTROLLER
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