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參數資料
| 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： | 21/26頁 |
| 文件大?。?/td> | 619K |
| 代理商： | ISL6551ABZ |
21
FN9066.4
July 8, 2005
Output Filter
Current Doubler Filter -
Two inductors are needed, but they
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
frequency.
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.
Secondary Drivers
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.
FIGURE 20A. CURRENT DOUBLER FILTER
FIGURE 20B. CONVENTIONAL FILTER
VOUT
S+
S–
L
OUT
C
OUT
V
OUT
F
L
OUT
F
CLOCK
C
OUT
V
OUT
VSS
CT
RD
R_RESDLY
R_RA
ISENSE
PKILIM
BGREF
R_LEB
CS_COMP
CSS
EANI
EAI
EAO
VDD
VDDP2
PGND
UPPER1
UPPER2
LOWER2
SYNC2
ON / OFF
DCOK
LSTSD
SHARE
VDDP1
LOWER1
SYNC1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ICL6551
SOIC
LED
OUTPUT
REFERENCE
(BDAC)
EAI
EAO
LSTSD
INPUT
UV & OV
SHARE
BUS
FIGURE 21. ISL6551 CONTROLLER
FIGURE 22A. INVERTING DRIVERS
FIGURE 22B. NON-INVERTING DRIVERS
FIGURE 22C. PRIMARY CONTROL
IN
GND
SYNC2
/LOWER1
SYNC1
/LOWER2
MIC4421BM
OUT
OUT
IN
GND
SYNP
SYNN
MIC4421BM
MIC4422BM
SYNC2
MIC4422BM
SYNN
IN OUT
GND
SYNC1
SYNP
IN OUT
GND
SYN1
SYN2
F
SW
T_SYN
IN OUT
GND
IN OUT
GND
SYNP
SYNN
INVERTING
NON INVERTING
SYN1
SYNC2/LOWER1
SYNC1
SYN2
SYNC1/LOWER2
SYNC2
IC
MIC4421BM
MIC4422BM
ISL6551
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數: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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數: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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數: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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