TPPM0115

更新时间： 2024-11-04 22:19:15

品牌	Logo	应用领域
德州仪器 - TI		开关控制器
页数	文件大小	规格书
13页	238K
描述
SWITCH MODE SYNCHRONOUS BUCK CONTROLLER

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TPPM0115 数据手册

TPPM0115

SWITCH MODE SYNCHRONOUS BUCK CONTROLLER

SLVS371A– MARCH 2001 – REVISED JUNE 2001

SO (D) PACKAGE

(TOP VIEW)

features

DC-DC Synchronous Buck Controller

Switching Frequency, 200 kHz (Typ)

GND

SEN

PWRGD

Programmable Output Voltage,

1 V to 2.5 V ±2%

DRVL

DRVH

PHASE

Power Good Function (PWRGD)

NC – No internal connection

Input Voltage, 12 V ±5%

Drive High Load Current With External

Components

applications

PC Motherboard, Voltage Regulation for

System Power

DDR Memory Supply (V

or V

)

DDQ

RDRAM Memory Supply (V

DDQ

General Purpose Synchronous Switch

Mode Controller

description

The TPPM0115 is a synchronous buck controller capable of driving two external power FETs 180° out of phase.

The device requires a minimum of external standard filter components and switching FETs to regulate the

desired output voltage. This is achieved with an internal switching frequency of 200 kHz (typical).

The TPPM0115 switch mode controller and associated circuitry provide efficient voltage regulation of greater

than 85%. The output voltage is set by two external resistors. During power up, when the output voltage reaches

90% of the desired value, the power good (PWRGD) output is transitioned high after a short delay of 1 ms to

5 ms. During power down, when the output voltage falls below 90% of the set value, the PWRGD output is pulled

low without any delay.

In the event the set output is in an over-voltage condition due to a system fault, the drive to the lower FET turns

on to correct the fault. There is a dead time between switching one FET ON while the other FET is switching

OFF to prevent cross conduction.

The TPPM0115 is capable of driving high static load currents with minimal ripple on the output (<2%). Thephase

sense input is used to sense the flow of current through the inductor during flyback to minimize ripple on the

output.

To optimize output filter capacitance, the voltage mode control is based on a fixed ON time during the start of

the cycle and hysteretic control during load transients. This allows the device to respond and maintain the set

regulation voltage.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...13

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与TPPM0115相关器件

型号	品牌	获取价格	描述	数据表
TPPM0115DR	TI	获取价格	Switch Mode Synchronous Buck Controller 8-SOIC 0 to 70
TPPM0115DRG4	TI	获取价格	0.5A SWITCHING CONTROLLER, 200kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, SOIC-8
TPPM0125	TI	获取价格	150-mA LOW DROPOUT REGULATOR WITH POK
TPPM0125DVB	ETC	获取价格	Positive Fixed Voltage Regulator
TPPM0301	TI	获取价格	400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT
TPPM0301D	ETC	获取价格	Analog IC
TPPM0301DR	TI	获取价格	400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT
TPPM0301DRG4	TI	获取价格	400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT
TPPM0302	TI	获取价格	400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT AND POK
TPPM0302DGN	TI	获取价格	Analog IC

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