參數(shù)資料
型號(hào)： TPS51163DRCR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁(yè)數(shù)： 2/26頁(yè)
文件大?。?/td> 2137K
代理商： TPS51163DRCR
( )
RIPPLE
OC
LDS on
OCSET
I
R
I
2
R
10 A
-
÷
è
=
m
SLUS864 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com
OVERCURRENT PROTECTION
Overcurrent detection is done by comparing a user programmable threshold with the voltage drop across the
low-side FET at the end of the switching period (The low-side FET is on). The OC threshold is set with a single
external resistor connected from the LDRV_OC pin to GND.
The overcurrent programming circuit applies 10-
μA of current to the LDRV_OC pin during the calibration phase
of the start-up sequence. Voltage drop on the LDRV_OC pin is measured and digitized, and the related code is
stored in the internal latch. This code determines a reference level for the overcurrent comparator. The value of
the OC set resistor ROCSET can be determined in Equation 1.
(1)
where
RLDS(on) is the drain-to-source resistance of the lower MOSFET in the ON state
IOC is the desired value of the overcurrent protection threshold for load current
IRIPPLE is the peak-to-peak amplitude of the inductor ripple current
the valley of the inductor current is compared with the overcurrent threshold for protection
When the controller senses the overcurrent condition for more than two clock cycles, both the upper and the
lower MOSFETs are latched off. To restart the controller, the VDD input should be cycled.
If the overcurrent set resistor value is higher than 50 k
, for example, the voltage drop on the LDRV_OC pin
exceeds 0.5 V, the controller stays in the calibration state without entering soft-start. This prevents the controller
from being activated if the overcurrent set resistor is missing.
OVERVOLTAGE (OV) AND UNDERVOLTAGE (UV) PROTECTION
The controller employs the dedicated VOS input to set output undervoltage and overvoltage protections. A
resistor divider with the same ratio as on the FB input is recommended for the VOS input. The overvoltage and
undervoltage thresholds for VOS are set to ± 25% of the internal reference, which is 800 mV.
When the voltage on VOS is lower than 600 mV, the undervoltage protection is triggered. The controller is
latched off with both the upper and lower MOSFETs turned off.
When the voltage on VOS is higher than 1 V, the overvoltage protection is activated. In the event of overvoltage,
the upper MOSFET is turned off and the lower MOSFET is forced on until VOS voltage reaches 400 mV. Then
the lower MOSFET is also turned off, and the controller is latched off.
After both the undervoltage and overvoltage events, normal operation can only be restored by cycling the VDD
voltage.
PGOOD
The TPS51113 and TPS51163 have a power good output that indicates HIGH when the output voltage is within
the target range. The PGOOD function is activated as soon as the soft-start ends. When the output voltage goes
± 10% outside of the target value, PGOOD goes low. When the output voltage returns to be within ± 6% of the
target value, PGOOD signal goes HIGH again. The PGOOD output is an open drain and needs external pull up
resistor.
10
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s) :TPS51113 TPS51163
相關(guān)PDF資料
PDF描述
TPS51113DRCR SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10
TPS51200DRCT SPECIALTY ANALOG CIRCUIT, PDSO10
TPS51200DRCTG4 SPECIALTY ANALOG CIRCUIT, PDSO10
TPS51206DSQT SWITCHING REGULATOR, PDSO10
TPS5120QDBTRQ1 1.5 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS51163DRCT 功能描述:DC/DC 開(kāi)關(guān)控制器 4.5-13.2V Synch Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS51163EVM 功能描述:電源管理IC開(kāi)發(fā)工具 12Vin 1.2Vout 10A Synch Contr Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS5120 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:DUAL OUTPUT, TWO PHASE SYNCHRONOUS BUCK DC/DC CONTROLLER
TPS51200 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:SINK/SOURCE DDR TERMINATION REGULATOR
TPS51200_1 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:SINK/SOURCE DDR TERMINATION REGULATOR
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*