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參數(shù)資料
| 型號(hào)： | L6710TR |
| 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 |
| 文件頁數(shù)： | 6/34頁 |
| 文件大?。?/td> | 1610K |
| 代理商： | L6710TR |
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L6710
14/34
output voltage reaches the under-voltage threshold (VoutMIN). When this threshold is crossed, all mosfets
are turned off, the FAULT pin is driven high and the device stops working. Cycle the power supply to re-
start operation.
The maximum average current during the Constant-Current behavior results:
In this particular situation, the switching frequency results reduced. The ON time is the maximum allowed
(TonMAX) while the OFF time depends on the application:
Over current is set anyway when IINFOx reaches 35
A (IFB=70A).
The full load value is only a convention to work with convenient values for IFB. Since the OCP intervention
threshold is fixed, to modify the percentage with respect to the load value, it can be simply considered that,
for example, to have on OCP threshold of 200%, this will correspond to IINFOx = 35
A (IFB = 70A). The
full load current will then correspond to IINFOx = 17.5
A (IFB = 35A).
Figure 5. Constant Current operation
INTEGRATED DROOP FUNCTION
The device uses a droop function to satisfy the requirements of high performance microprocessors, re-
ducing the size and the cost of the output capacitor.
This method "recovers" part of the drop due to the output capacitor ESR in the load transient, introducing
a dependence of the output voltage on the load current: the regulated voltage decrease as the load in-
crease with a precise relationship.
As shown in figure 6, the ESR drop is present in any case, but using the droop function the total deviation
of the output voltage is minimized. A static error (VDROOP in figure 6) at zero load is simply introduced by
a resistor between FB and GND allowing to exploit the all tolerance interval available. This additional re-
sistor is not required in application such as VRD10 since the nominal value is already set by the VID* and
the load regulation fixed by the specs.
Since the device has an average current mode regulation, the information about the total current delivered
I
MA X,TOT
2I
MA X
2I
OCPx
I peak
I
OCPx
–
2
--------------------------------------
+
=
=
T
OFF
L
I peak
I
OCPx
–
V
OU t
--------------------------------------
f
1
T
ONm ax
T
OFF
+
-----------------------------------------
=
=
TonMAX
IOCPx
Ipeak
IMAX
Vout
Iout
(IFB=50
A)
2IOCPx (IFB=70
A)
IMAX,TOT
UVP
Droop effect
a) Maximum current for each phase
b) Output Characteristic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6713ATR | 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6716TR | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6716 | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| L6722TR | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| L6712_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
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