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参数资料
| 型号： | TPS40000 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | "Low Input (2.25V-5.5V) 300 kHz Frequency |
| 中文描述： | 低输入 (2.25V-5.5V) 300kHz 频率同步降压控制器，仅用作源控制器 |
| 文件页数： | 19/20页 |
| 文件大小： | 280K |
| 代理商： | TPS40000 |
TPS40000, TPS40001
TPS40002, TPS40003
TPS40004, TPS40005
SLUS507B JANUARY 2002 REVISED AUGUST 2003
8
www.ti.com
APPLICATION INFORMATION
The TPS4000x series of synchronous buck controller devices is optimized for high-efficiency dc-to-dc
conversion in non-isolated distributed power systems. A typical application circuit is shown in Figure 1.
The TPS40004 and TPS40005 are the controllers of choice for most general purpose synchronous buck
designs. Each operates in two quadrant mode (i.e. source or sink current) full time. This choice provides the
best performance for output voltage load transient response over the widest load current range.
The TPS40001 and TPS40003 add an additional feature: They operate in single quadrant mode (i.e. source
current only) during converter startup, and then when the converter has reached the regulation point, the
controllers change to operate in two quadrant mode. This is useful for applications that have outputs pre-biased
at some voltage before the controller is enabled. When the TPS40001 or TPS40003 is enabled, it does not sink
current during startup and therefore does not pull current from the pre-biased voltage supply.
The TPS40000 and TPS40002 operate in single quadrant mode (source current only) full time, allowing the
paralleling of converters. Single quadrant operation ensures one converter does pull current from a paralleled
converter. A converter using one of these controllers emulates a non-synchronous buck converter at light loads.
When current in the output inductor attempts to reverse, an internal zero-current detection circuit turns OFF the
synchronous rectifier and causes the current flow in the inductor to become discontinuous. At average load
currents greater than the peak amplitude of the inductor ripple current, the converter returns to operation as a
synchronous buck converter to maximize efficiency.
UDG02013
10
F
20 k
W
100
F
7.68 k
470
F 10 F 15.7 k
243
10 k
VOUT 1.8 V
10 A
1.0
H
Si4836DY
IHLP5050CE01
Si4836DY
5
8
7
10
9
1
2
3
ILIM
FB
COMP
GND
HDRV
SW
VDD
LDRV
3.6 nF
4
4.7 nF
SS/SD
6
BOOT
100 pF
TPS40001
100 nF
3.3 nF
3.3
VDD
3.0 V to 5.5 V
Figure 1. Typical Application Circuit
相关PDF资料 |
PDF描述 |
|---|---|
| TPS40001EVM-001 | TPS40001 Evaluation Module(TPS40001评估板) |
| TPS40001 | Low Input Voltage Mode Synchronous Buck Controller |
| TPS40002 | "Low Input (2.25V-5.5V) 600 kHz Frequency |
| TPS40003EVM | TPS40003 Evaluation Module(TPS40003评估板) |
| TPS40003 | Low Input Voltage Mode Synchronous Buck Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40000DGQ | 功能描述:电压模式 PWM 控制器 Low Input 2.25V-5.5V 300 kHz Frequency RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40000DGQG4 | 功能描述:电压模式 PWM 控制器 Low Input 2.25V-5.5V 300 kHz Frequency RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40000DGQR | 功能描述:电压模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40000DGQRG4 | 功能描述:电压模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40001 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOW-INPUT VOLTAGE-MODE SYNCHRONOUS BUCK CONTROLLER |
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