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参数资料
| 型号： | TPS62200DBVTG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.67 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | GREEN, PLASTIC, SOT-23, 5 PIN |
| 文件页数： | 17/23页 |
| 文件大小： | 590K |
| 代理商： | TPS62200DBVTG4 |
www.ti.com
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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
VREF = 0.5 V
R2
See Note
R1
VI
EN
SW
FB
GND
Gm
DETAILED DESCRIPTION
OPERATION
SLVS417E – MARCH 2002 – REVISED MAY 2006
FUNCTIONAL BLOCK DIAGRAM
For the adjustable version (TPS62200) the internal feedback divider is disabled and the FB pin is directly connected
to the internal GM amplifier
The TPS6220x is a synchronous step-down converter operating with typically 1-MHz 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.
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS62200EVM-211 | 功能描述:电源管理IC开发工具 Adj 300-mA Step-down Conv Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS62201DBVR | 功能描述:直流/直流开关调节器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62201DBVRG4 | 功能描述:直流/直流开关调节器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62201DBVT | 功能描述:直流/直流开关调节器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62201DBVTG4 | 功能描述:直流/直流开关调节器 300mA Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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