参数资料
型号: ISL6551ABZ-T
厂商: Intersil
文件页数: 19/26页
文件大小: 0K
描述: IC REG CTRLR FLYBACK PWM 28-SOIC
标准包装: 1,000
PWM 型: 电流模式
输出数: 6
频率 - 最大: 1MHz
占空比: 50%
电源电压: 10.8 V ~ 13.2 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
ISL6551
Feedback
Rectifiers
EAO
S+
SYNCHRONOUS FETs
SYNP
SCHOTTKY
S+
VOPOUT
EAI
SYNN
S–
S–
FIGURE 17A. CURRENT DOUBLER RECTIFIERS
FIGURE 16A. SECONDARY CONTROL
VREF = 5V
SYNCHRONOUS FETs
S+
S+
SCHOTTKY
VOPOUT
IL207
SYNN
SYNP
TL431
EAI
EAO
S–
S–
FIGURE 17B. CONVENTIONAL RECTIFIERS
FIGURE 16B. PRIMARY CONTROL
Secondary Control - In secondary side control systems,
only a few resistors and capacitors are required to complete
the feedback loop.
Primary Control - This feedback loop configuration for
primary side control systems requires an optocoupler for
isolation. The bandwidth is limited by the optocoupler.
19
S+
S–
FIGURE 17C. SELF-DRIVEN RECTIFIERS
Current Doubler Rectifiers -
1. Synchronous FETs are used for low output voltage, high
output current and/or high efficiency applications.
2. Schottky diodes are used for lower current applications.
Pins S+ and S- are connected to the output filter and the
main transformer with current doubler configurations.
Conventional Rectifiers -
1. Synchronous FETs are used for low output voltage, high
output current and/or high efficiency applications.
2. Schottky diodes are used for lower current applications.
Pins S+ and S- are connected to the main transformer
with conventional configurations.
Self-Driven Rectifiers - For low output voltage applications,
both FETs can be driven by the voltage across the
secondary winding. This can work with all kinds of main
transformer configurations as shown in Figures 18A-D.
FN9066.5
January 3, 2006
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ISL6551AR-T 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
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ISL6551ARZ-T 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)
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