參數(shù)資料
型號(hào)： L6722
廠商： STMICROELECTRONICS
元件分類(lèi)： 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)： 13/34頁(yè)
文件大小： 421K
代理商： L6722
Obsolete
Product(s)
- Obsolete
Product(s)
7 Output voltage positioning
L6722
20/34
7.3
Maximum duty cycle limitation
To provide proper time for current-reading in order to equalize the current carried by each
phase, the device implements a duty-cycle limitation. This limitation is not fixed but it is linearly
variable with the current delivered to the load as follow:
Duty Cycle limitation is variable with the delivered current to provide fast load transient
response at light load as well as assuring robust over-current protection.
Figure 10 shows the maximum output voltage that the device is able to regulate considering the
TON limitation imposed by the previous relationship. If the desired output characteristic crosses
the limited-TON maximum output voltage, the output resulting voltage will start to drop after the
cross-point. In this case, the output voltage starts to decrease following the resulting
characteristic (dotted in Figure 10) until UVP is detected or anyway until IISENx = 35A.
Figure 10. Maximum duty-cycle limitation
T
ON max
()
0.80
T
SW
I
ISENx
0
A
=
0.40
T
SW
I
ISENx
35
A
=
=
VOUT
0.40 VIN
Maximum Output Voltage
0.80 VIN
IOCP = 3 x IOCPx
(IISENx = 35A)
IOUT
VOUT
0.40 VIN
Limited TON
0.80 VIN
IOCP = 3 x IOCPx
(IISENx = 35A)
IOUT
Desired output Char.
UVP Threshold
Resulting Output Char.
Limted-TON Output Char.
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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(chēng):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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