參數(shù)資料
型號(hào)： L6710
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, PQFP44
封裝： 10 X 10 MM, 1 MM HEIGHT, TQFP-44
文件頁(yè)數(shù)： 8/34頁(yè)
文件大?。?/td> 1610K
代理商： L6710
L6710
16/34
is used for a VRM module. The very low offset amplifier senses the output voltage remotely through the
pins FBR and FBG (FBR is for the regulated voltage sense while FBG is for the ground sense) and reports
this voltage internally at VSEN pin with unity gain eliminating the errors. Keeping the FBR and FBG traces
parallel and guarded by a power plane results in common mode coupling for any picked-up noise.
If remote sense is not required, it is enough connecting RFB directly to the regulated voltage: VSEN be-
comes not connected and still senses the output voltage through the remote buffer. In this case the FBG
and FBR pins must be connected anyway to the regulated voltage (See figure 9).
The remote buffer is included in the trimming chain in order to achieve ±0.5% accuracy on the output volt-
age when the RB Is used: eliminating it from the control loop causes the regulation error to be increased
by the RB offset worsening the device performances.
Figure 8. Remote Buffer Connections
OUTPUT VOLTAGE MONITOR PROTECTION
The device monitors through pin VSEN the regulated voltage in order to build the PGOOD signal and man-
age the OVP / UVP conditions comparing this voltage level with the programmed reference VID*.
Power good output is forced low if the voltage sensed by VSEN is not within ±12% (Typ.) of the pro-
grammed value. It is an open drain output and it is enabled only after the soft start is finished (2048 clock
cycles after start-up). During Soft-Start this pin is forced low.
Under voltage protection is provided. If the output voltage monitored by VSEN drops below the 60% of the
reference voltage for more than one clock period, the device turns off all mosfets and the OSC/FAULT is
driven high (5V). The condition is latched, to recover it is required to cycle the power supply.
Over Voltage protection is also provided:
Once VCC crosses the turn-ON threshold, when the voltage monitored by VSEN reaches 125% (Typ.) of
the programmed voltage the controller permanently switches on both the low-side mosfets and switches
off both the high-side mosfets in order to protect the CPU. The OSC/ FAULT pin is driven high (5V) and
power supply (Vcc) turn off and on is required to restart operations.
Both Over Voltage and Under Voltage are active also during soft start (Under Voltage after than the output
voltage reaches 0.6V). The reference used in this case to determine the UV thresholds is the increasing
voltage driven by the 2048 soft start digital counter while the reference used for the OV threshold is the
final reference programmed by the VID pins.
Reference
IFB
REMOTE
BUFFER
ERROR
AMPLIFIER
FB
COMP
VSEN
FBG
FBR
Remote
Ground
Remote
VOUT
RF
CF
RFB
32k
Reference
IFB
REMOTE
BUFFER
ERROR
AMPLIFIER
FB
COMP
VSEN
FBG
FBR
RF
CF
RFB
32k
VOUT
RB used (±0.5% Accuracy)
RB Not Used
相關(guān)PDF資料
PDF描述
L6710TR 2 A SWITCHING CONTROLLER, PQFP44
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L6716TR DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6710TR 功能描述:功率驅(qū)動(dòng)器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
L6711 功能描述:DC/DC 開關(guān)控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
L6711_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs
L6711TR 功能描述:DC/DC 開關(guān)控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
L6712 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
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