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| 型号： | TPS40190DRCRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件页数： | 22/25页 |
| 文件大小： | 615K |
| 代理商： | TPS40190DRCRG4 |
www.ti.com
APPLICATION INFORMATION
Introduction
UDG05060
1.5 M
1
2
3
9
8
SW
BOOT
ENABLE
FB
COMP
TPS40190
4
5
6
BP5
VDD
GND
7
LDRV
5V
Regulator
VDD
Oscillator
Fault
Controller
PWM Logic
and
AntiCross
Conduction
Short Circuit
Threshold
Selector
+
SC
OC
CLK
10 HDRV
SoftStart
Ramp
Generator
FAULT
SD
UVLO
SC
Threshold Latch
SS
5 V
+
4.25 V
UVLO
5 V
+
SS
591 mV
Error Amplifier
PWM
Comparator
CLK
SC Threshold Latch
SC: 160 mV, 320 mV
or 460 mV below VDD
UVLO
FAULT
Internally Fixed Parameters
SLUS658B – JULY 2005 – REVISED AUGUST 2007
The TPS40190 is a cost optimized controller providing all the necessary features to construct a high-performance
DC-DC converter while keeping costs to a minimum. Support for pre-biased outputs eliminates concerns about
damaging sensitive loads during startup. Strong gate drivers for the high side and rectifier N-channel MOSFETs
decrease switching losses for increased efficiency. Adaptive gate drive timing minimizes body diode conduction
in the rectifier MOSFET, also increasing efficiency. Selectable short circuit protection thresholds and hiccup
recovery from a short-circuit increase design flexibility and minimize power dissipation in the event of a prolonged
output fault. A dedicated enable pin (ENABLE) allows the converter to be placed in a very low quiescent current
shutdown mode.
Internally fixed switching frequency and soft-start time reduce external component count, simplifying design and
layout, as well as reducing footprint and cost. The 3 mm
× 3 mm package size also contributes to a reduced
overall converter footprint.
The TPS40190 has a fixed internal switching frequency of 300 kHz. Soft-start time is fixed at 4.7 ms typical and
the UVLO level is set between 4.1 V and 4.4 V.
6
Copyright 2005–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS40190
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| TPS40190DRCT | 功能描述:DC/DC 开关控制器 Low Pin Count Sync Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40190DRCTG4 | 功能描述:DC/DC 开关控制器 Low Pin Count Sync Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40190EVM-001 | 功能描述:电源管理IC开发工具 Sync Buck Converter 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 |
| TPS40192 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5-V TO 18-V INPUT 10-PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD |
| TPS40192_1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5-V TO 18-V INPUT 10-PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD |
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