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参数资料
| 型号： | ISL6551ABZ-T |
| 厂商： | Intersil |
| 文件页数： | 18/26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： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 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
Current Sense
Primary FETs
Q3_S
T_CURRENT
ISENSE
V IN F
or CURRENT_SEN_P
Q1_G
P–
Q1
Q2_G
P+
Q2
Q4_S
FIGURE 14A. TWO-LEG SENSE
Q3_G
Q3_S
Q3
Q4_G
Q4_S
Q4
FIGURE 15A. FULL BRIDGE
V IN F
ISENSE
CURRENT_SEN_P
P1–
P2–
FIGURE 14B. TOP SENSE
ISENSE
Q3_S & Q4_S
Q3_G
Q3_S
Q3
Q4_G
Q4_S
Q4
RSENSE
FIGURE 14C. RESISTOR SENSE (PRIMARY CONTROL)
Two-Leg Sense - Senses the current that flows through both
lower primary FETs. Operates at the switching frequency.
Top Sense - Senses the sum of the current that flows through
both upper primary FETs. Operates at the clock frequency.
Resistor Sense - This simple scheme is used in a primary side
control system. The sum of the current that flows through both
lower primary FETs is sensed with a low impedance power
resistor. The sources of Q3 and Q4 and ISENSE should be tied
at the same point as close as possible.
BIASES
Linear Regulator - In a primary side control system, a
linear regulator derived from the input line can be used for
the start-up purpose, and an extra winding coupled with the
main transformer can provide the controller power after the
start up.
DCM Flyback - Use a PWM controller to develop both
primary and secondary biases with discontinuous current
mode flyback topology.
18
FIGURE 15B. PUSH-PULL
Full Bridge - Four MOSFETs are required for full bridge
converters. The drain to source voltage rating of the
MOSFETs is Vin.
Push-Pull - Only the two lower MOSFETs are required for
push-pull converters. The two upper drivers are not used.
The V DS of the MOSFETs is 2xVin.
FN9066.5
January 3, 2006
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 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) |
| 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) |
| ISL6551EVAL1 | 功能描述:EVALUATION BOARD ISL6551 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
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