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参数资料
| 型号： | ISL6551ABZ-T |
| 厂商： | Intersil |
| 文件页数： | 21/26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
Output Filter
Secondary Drivers
S+
L OUT
MIC4421BM
MIC4421BM
VOUT
C OUT
SYNC2
/LOWER1
IN OUT
SYNP
SYNC1
/LOWER2
IN OUT
SYNN
S–
GND
GND
FIGURE 20A. CURRENT DOUBLER FILTER
FIGURE 22A. INVERTING DRIVERS
V OUT F
L OUT
V OUT
MIC4422BM
MIC4422BM
F CLOCK
C OUT
SYNC1
IN OUT
SYNP
SYNC2
IN OUT
SYNN
FIGURE 20B. CONVENTIONAL FILTER
Current Doubler Filter - Two inductors are needed, but they
GND
GND
can be integrated and coupled into one core. Each inductor
carries half of the load operating at the switching frequency.
Conventional Filter - One inductor is needed. The inductor
carries all the load operating at two times the switching
FIGURE 22B. NON-INVERTING DRIVERS
frequency.
IN OUT
SYNP
Controller
T_SYN
GND
VSS 1
CT 2
28 VDD
27 VDDP1
SYN1
RD 3
R_RESDLY 4
R_RA 5
ISENSE 6
PKILIM 7
BGREF 8
ICL6551
SOIC
26 VDDP2
25 PGND
24 UPPER1
23 UPPER2
22 LOWER1
21 LOWER2
INPUT
UV & OV
SYN2
F SW
IN OUT
GND
SYNN
R_LEB 9
20 SYNC1
INVERTING
NON INVERTING
EANI 12
OUTPUT
(BDAC)
CS_COMP 10
REFERENCE CSS 11
19 SYNC2
18 ON / OFF
17 DCOK
LED
SYN1
SYN2
IC
SYNC2/LOWER1
SYNC1/LOWER2
MIC4421BM
SYNC1
SYNC2
MIC4422BM
EAI
EAO
EAI 13
EAO 14
16 LSTSD
15 SHARE
LSTSD
SHARE
FIGURE 22C. PRIMARY CONTROL
BUS
FIGURE 21. ISL6551 CONTROLLER
ISL6551 Controller - It can be used as a full bridge or push-
pull PWM controller. The QFN package requires less space
than the SOIC package.
21
Inverting Drivers - Inverting the SYNC signals or the
LOWER signals with external high current drivers to drive
the synchronous FETs.
Non-inverting Drivers - Cascading SYNC signals with non-
inverting high current drivers to drive the synchronous FETs.
There is a dead time between SYNC1 and SYNC2. For a
higher efficiency, schottky diodes are normally in parallel
with the synchronous FETs to reduce the conduction losses
during the dead time in high output current applications.
Primary Control - This requires a pulse transformer,
operating at the switching frequency, for isolation. There are
three options to drive the synchronous FETs, as described in
previous lines.
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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