參數(shù)資料
型號(hào)： L6722
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)： 18/34頁(yè)
文件大?。?/td> 421K
代理商： L6722
Obsolete
Product(s)
- Obsolete
Product(s)
L6722
9 Output voltage monitor and protections
25/34
Where VoutMIN is the UVP threshold, (inductor saturation must be considered). When that
threshold is crossed, all mosfets are turned off, the FAULT pin is driven high and the device
stops working. Cycle the power supply or the INH pin to restart operation.
The maximum average current during the Constant-Current behavior results:
in this particular situation, the switching frequency for each phase results reduced. The ON time
is the maximum allowed TON(max) while the OFF time depends on the application:
The trans-conductance resistor RISENx can be designed considering that the device limits the
bottom of the inductor current ripple and also considering the additional current delivered
during the quasi-constant-current behavior as previously described in the worst case
conditions.
where
Figure 14. Constant current operation
PEAK
I
OCPx
V
IN
V
OUT min
()
–
L
-------------------------------------------
T
ON max
()
+
I
OCPx
V
IN
V
OUT min
()
–
L
-------------------------------------------
0.40
T
SW
+
==
MAX tot
,
3I
MAX
3I
OCPx
I
PEAK
I
OCPx
–
2
-------------------------------------
+
==
T
OFF
L
I
PEAK
I
OCPx
–
V
OUT
-------------------------------------
=
f
1
T
ON max
()
T
OFF
+
----------------------------------------------
=
R
ISENx
I
OCPx max
()
R
dsON max
()
I
OCTH min
()
---------------------------------------------------------------------
=
I
OCPx
I
OUT OCP
()
3
----------------------------
I
PP
2
------------
–
=
VOUT
0.40 VIN
Constant Current (Exploded)
IOCP = N x IOCPx
(IDROOP = N x 35A)
IOUT
UVP Threshold
Resulting Out. Char.
IMAX,tot
Limted-TON Char.
Droop Effect
Quasi-Const.
Current
TON(max)
IOCPx
IMAX
IPEAK
LS ON Skipping
Clock Cycles
TSW
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6722TR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 3 Phase 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(kāi)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 功能描述:開(kāi)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(kāi)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(kāi)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(kāi)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(kāi)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(kāi)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
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