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參數(shù)資料
| 型號： | ISL6551ABZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 500-mA Peak Step-Up, Step-Down, Inverting Switching Voltage Regulator 14-PDIP -40 to 85 |
| 中文描述： | DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-013AE, SOIC-28 |
| 文件頁數(shù)： | 17/26頁 |
| 文件大?。?/td> | 619K |
| 代理商： | ISL6551ABZ |
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17
FN9066.4
July 8, 2005
Figure 13 shows the block diagram of a power supply
system employing the ISL6551 full bridge controller. The
ISL6551 not only is a full bridge PWM controller but also can
be used as a push-pull PWM controller. Users can design a
power supply by selecting appropriate blocks in the “
System
Blocks Chart
” based on the power system requirements.
Figures 13A, 14A, 15A, 16A, 17A, 18A, 19, 20A, 21, 22A,
and 24A have been used in the 200W telecom power supply
reference design, which can be found in the Application Note
AN1002. To meet the specifications of the power supply,
minor modifications of each block are required. To take full
advantage of the integrated features of the ISL6551,
“secondary side control” is recommended.
System Blocks Chart
Input Filters
General -
Input capacitors are required to absorb the
power switch (FET) pulsating currents.
EMI -
For good EMI performance, the ripple current that is
reflected back to the input line can be reduced by an input
L-C filter, which filters the differential-mode noises and
operates at two times the switching frequency, i.e., the
clock frequency (Fclock). In some cases, an additional
common-mode choke might be required to filter the
common-mode noises.
FIGURE 13. BLOCK DIAGRAM OF A POWER SUPPLY SYSTEM USING ISL6551 CONTROLLER
BIASES
RECTIFIERS
OUTPUT
FILTER
V
OUT
FEEDBACK
ISL6551
CONTROLLER
PRIMARY
FETs
PRIMARY BIAS
SECONDARY BIAS
CURRENT
SENSE
V
IN
INPUT
FILTER
SUPERVISOR
CIRCUITS
MAIN
TRANSFORMER
DRIVERS
SECONDARY
PRIMARY FET
DRIVERS
FIGURE 13A. GENERAL
FIGURE 13B. EMI
V
IN
F
V
IN
C
IN
V
IN
V
IN
F
L
IN
C
IN
ISL6551
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參數(shù)描述 |
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| ISL6551ABZ-T | 功能描述:IC REG CTRLR FLYBACK PWM 28-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6551AR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL6551AR-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL6551ARZ | 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6551ARZ-T | 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
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