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參數(shù)資料
| 型號(hào)： | IR3623MPBF |
| 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 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大小： | 523K |
| 代理商： | IR3623MPBF |
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IR3623MPbF
www.irf.com
10
Internal Regulator
IR3623 features an on-board regulator capable of
sourcing current up to 200mA. This integrated
regulator can be used to generate the necessary
bias voltage for the IP2003A, an example of how
this can be used to power IP2003A is shown in
figure 22.
The output of regulator is protected for short
circuit and thermal shutdown.
Out-of-Phase Operation
The IR3623 drives its two output stages 180
o
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 ripple voltage requirement. Figure 4 shows
two channels inductor current and the resulting
voltage ripple at output.
IL1
IL2
HDRV1
HDRV2
0
DT
T
Ic
Io
Mode Selection
The IR3623 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 and in dual output mode a soft start
capacitor must be connected from this pin to
ground to program the start time for the second
output.
Independent Mode
In this mode the IR3623 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 external MOSEFT drivers. Figure
23 shows a typical schematic for such
application.
Fig. 4: Current ripple cancellation for output
In addition, the 180
o
out of phase contributes to
input current cancellation. This result in much
smaller input capacitor’s RMS current and
reduces the input capacitor quantity. Figure 5
shows the equivalent RMS current.
Single Phase
2 Phase
Duty Cycle (Vo/Vin)
R
R
/
o
)
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 |
|---|---|
| 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 |
| IR3624MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 10-MLPD RoHS:是 類別: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 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| IR3624MTRPBF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 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 |
| IR3628MPBF | 功能描述:IC CTLR PWM BUCK SYNC 12-MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
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