參數(shù)資料
型號(hào)： L6910TR
廠商： 意法半導(dǎo)體
英文描述： ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
中文描述： 可調(diào)降壓控制器采用同步整流
文件頁(yè)數(shù)： 7/21頁(yè)
文件大?。?/td> 453K
代理商： L6910TR
7/21
L6910A L6910
Figure 3. High Side driver peak current. Vboot-Vphase = 12V (right) Vboot-Vphase = 5V (left)
Figure 4. Low Side driver peak current. V
CC
= 12V (right) V
CC
= 5V (left)
Monitoring and Protections
The output voltage is monitored by means of pin FB. If it is not within ±10% (typ.) of the programmed value, the
powergood output is forced low.
The device provides overvoltage protection, when the voltage sensed on pin FB reaches a value 17% (typ.)
greater than the reference the OSC pin is forced high (3V typ.) and the lower driver is turned on as long as the
over-voltage is detected.
Overcurrent protection is performed by the device comparing the drop across the high side MOS, due to the
R
DSON
, with the voltage across the external resistor (R
OCS
) connected between the OCSET pin and drain of the
upper MOS. Thus the overcurrent threshold (I
P
) can be calculated with the following relationship:
R
I
R
dsON
Where the typical value of I
OCS
is 200
μ
A. To calculate the R
OCS
value it must be considered the maximum
R
dsON
(also the variation with temperature) and the minimum value of I
OCS
. To avoid undesirable trigger of
overcurrent protection this relationship must be satisfied:
CH1 = High Side Gate CH4 = Gate Current
CH1 = Low Side Gate CH4 = Gate Current
I
P
--------------------------------
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6911 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR
L6911A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC
L6911B 制造商:STMicroelectronics 功能描述:
L6911C 功能描述:DC/DC 開(kāi)關(guān)控制器 5B PROGRAMMABLE STEP DOWN 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
L6911CTR 功能描述:DC/DC 開(kāi)關(guān)控制器 5B PROGRAMMABLE STEP DOWN 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
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