參數(shù)資料
型號(hào)： TPS62201DBV
廠商： Texas Instruments, Inc.
元件分類(lèi)： DC/DC變換器
英文描述： HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER
中文描述： 高效率，采用SOT23降壓，DC - DC變換器
文件頁(yè)數(shù)： 3/17頁(yè)
文件大小： 280K
代理商： TPS62201DBV
www.ti.com
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REF
REF
Load Comparator
Skip Comparator
Current Limit Comparator
P-Channel
Power MOSFET
Driver
Shoot-Through
Logic
Control
Logic
Soft Start
1 MHz
Oscillator
Comparator
S
R
N-Channel
Power MOSFET
Comparator High
Comparator Low
Comparator Low 2
V
(COMP)
Sawtooth
Generator
V
I
Undervoltage
Lockout
Bias Supply
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+
Comparator High
Comparator Low
Comparator Low 2
Compensation
V
REF
= 0.5 V
R2
See Note
R1
V
I
EN
SW
FB
GND
Gm
DETAILED DESCRIPTION
OPERATION
The TPS6220x is a synchronous step-down converter operating with typically 1MHz fixed frequency pulse width
modulation (PWM) at moderate to heavy load currents and in power save mode operating with pulse frequency
modulation (PFM) at light load currents.
TPS62200, TPS62201
TPS62202, TPS62203, TPS62207
TPS62204, TPS62205, TPS62208
SLVS417D–MARCH 2002–REVISED MAY 2004
FUNCTIONAL BLOCK DIAGRAM
#IMPLIED.
connected to the internal GM amplifier
For the adjustable version (TPS62200) the internal feedback divider is disabled and the FB pin is directly
During PWM operation the converter uses a unique fast response, voltage mode, controller scheme with input
voltage feed forward. This achieves good line and load regulation and allows the use of small ceramic input and
output capacitors. At the beginning of each clock cycle initiated by the clock signal (S), the P-channel MOSFET
switch is turned on, and the inductor current ramps up until the comparator trips and the control logic turns off the
switch. The current limit comparator also turns off the switch in case the current limit of the P-channel switch is
exceeded. Then the N-channel rectifier switch is turned on and the inductor current ramps down. The next cycle
is initiated by the clock signal again turning off the N-channel rectifier and turning on the P-channel switch.
3
相關(guān)PDF資料
PDF描述
TPS62202DBV HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER
TPS62203DBV HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER
TPS62204DBV HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER
TPS62260DDC 2.25 MHz 600 mA Step Down Converter in 2x2SON/TSOT-23 Package
TPS62261DRV 2.25 MHz 600 mA Step Down Converter in 2x2SON/TSOT-23 Package
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62201DBVR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62201DBVRG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62201DBVT 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62201DBVTG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62202DBVR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.8V Out Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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