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參數(shù)資料
| 型號(hào)： | IR3622AMTRPbF |
| 廠商： | International Rectifier |
| 英文描述： | HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING |
| 中文描述： | 高頻2相，單或雙輸出同步降壓控制器，輸出跟蹤和排序 |
| 文件頁(yè)數(shù)： | 3/33頁(yè) |
| 文件大?。?/td> | 690K |
| 代理商： | IR3622AMTRPBF |
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IR3622AMPbF
www.irf.com
11
Internal Regulator
The IR3622A features an on-board 7.2V
regulator with short circuit protection. The
regulator is capable of sourcing current up to
100mA. This integrated regulator can be used to
generate the necessary bias voltage for drivers,
an example of how this can be used is shown in
figure 23, page26.
Out-of-Phase Operation
The IR3622A drives its two output stages 180o
out-of-phase. In current share mode single
output, the two inductor ripple currents cancel
each other and result in a reduction of the output
current ripple and yield a smaller output capacitor
for the same voltage ripple requirement. Figure 4
shows two channels inductor current and the
resulting voltage ripple at the output.
IL1
IL2
HDRV1
HDRV2
0DT
T
Ic
Io
Mode Selection
The IR3622A can operate as a dual output
independently regulated buck converter, or as a
2 phase single output buck converter (current
share mode). The SS2 pin is used for mode
selection. In current share mode this pin should
be floating. In the dual output mode, a soft start
capacitor must be connected from this pin to the
ground to program the start time for the second
output.
Independent Mode
In this mode the IR3622A provides control to two
independent output power supplies with either
common or different input voltages. The output
voltage of each individual channel is set and
controlled by the output of the error amplifier,
which is the amplified error signal from the
sensed output voltage and the reference voltage.
The error amplifier output voltage is compared to
the ramp signal thus generating fixed frequency
pulses of variable duty-cycle, (PWM) which are
applied to the internal MOSEFT drivers. Figure
24
shows
a
typical schematic for such
application.
Fig. 4: Current ripple cancellation for output
In addition, the 180o out of phase contributes to
input current cancellation. This results in much
smaller input capacitor’s RMS current and
reduces the number of required input capacitors.
Figure 5 shows the equivalent RMS current.
Single Phase
2 Phase
Duty Cycle (Vo/Vin)
RMS
C
urr
en
tNorm
aliz
ed
(I
RMS
/I
ou
t)
Fig. 5: Input RMS value vs. Duty Cycle
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3622MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) |
| IR3622MTRPBF | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ 2-PHASE Single or Dual SYNCH 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 |
| IR3623MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) |
| IR3623MPBF_1 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING |
| IR3623MTRPBF | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ 2-PHASE Single or Dual SYNCH 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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