- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384028 > TPS62208DBV (Texas Instruments, Inc.) HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER PDF資料下載
參數(shù)資料
| 型號： | TPS62208DBV |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 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 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 280K |
| 代理商： | TPS62208DBV |
www.ti.com
_
+
_
+
_
+
_
+
_
+
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
_
+
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 |
|---|---|
| TPS62200DBV | HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER |
| TPS62201DBV | HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62208DBVR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.875V Out Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPS62208DBVRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.875V Out Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPS62208DBVT | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.875V Out Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPS62208DBVTG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.875V Out Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPS62220DDCR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 400mA Hi-Eff Step-Down Con 15uA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。