參數(shù)資料
型號(hào)： L6722TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36
封裝： 6 X 6 MM, 1 MM PITCH, VFQFPN-36
文件頁(yè)數(shù)： 16/34頁(yè)
文件大?。?/td> 421K
代理商： L6722TR
Obsolete
Product(s)
- Obsolete
Product(s)
L6722
9 Output voltage monitor and protections
23/34
Figure 12. output voltage protections and typical principle connections
9.4
Feedback disconnection
Output voltage i monitored by the device in two different points:
●
Remotely, through the remote buffer, across VSEN
●
Locally across the CS- pin (negligibly offset by
).
By comparing the voltage present at these two different locations, L6722 is able to understand
if the output voltage feedback is connected. When CS- is more than 1.375V higher than VSEN,
(See Figure 13) the device stops switching with the low side mosfets permanently ON and
drives high the FAULT pin. The condition is latched until VCC or INH cycled.
Figure 13. Feedback disconnection
VCC
+12V
+5V
SB
Vcc
UVLO
OVP
UVLO
VCC
Preliminary OVP Enabled
FBR Monitored
No Protection
Provided
(INH = Free)
OVP Protection
VSEN Monitored
(INH = 0)
Preliminary OVP
FBR Monitor
R
D
I
CS
L2
L1
L3
DCR1
DCR2
DCR3
CD
RD
RD RD
RG
PHASE3
PHASE2
PHASE1
VOUT
IINFO
CS_DROOP+
CS_DROOP-
FB
IDROOP
x 3
RF
CF
RFB
COMP
VSEN
FBR
FBG
VID
FB_DISCONNECTED
1V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6725 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Vltg Mode PWM Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
L6725_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Voltage mode PWM controller with bootstrap anti-discharging system
L6725A 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Vltg Mode PWM Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
L6725ATR 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
L6725TR 功能描述:電壓模式 PWM 控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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