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): 20/26頁
文件大?。?/td> 619K
代理商: ISL6551ABZ
20
FN9066.4
July 8, 2005
Main Transformers
Full Bridge and Current Doubler -
No center tap is
required. The secondary winding carries half of the load, i.e.,
only half of the load is reflected to the primary.
Conventional Full Bridge -
Center tap is required on the
secondary side, and no center tap is required on the primary
side. The secondary winding carries all the load. i.e., all the
load is reflected to the primary.
Push-Pull and Current Doubler -
Center tap is required on
the primary side, and no center tap is required on the
secondary side. The secondary winding carries half of the
load, i.e., only half of the load is reflected to the primary.
Conventional Push-Pull -
Both primary and secondary
sides require center taps. The secondary winding carries all
the load, i.e., all the load is reflected to the primary.
Supervisor Circuits
(1) INTEGRATED SOLUTION
Intersil ISL6550 Supervisor And Monitor (SAM). Its QFN
package requires less space than the SOIC package.
Over-temperature protection (discrete)
Input UV lockout (discrete)
(2) DISCRETE SOLUTION
Differential Amplifier
VCC undervoltage lockout
Programmable output OV and UV
Programmable output
Status indicators (PGOOD and START)
Precision Reference
Ove- temperature protection
Input UV lockout
The Integrated Solution
is much simpler than a discrete
solution. Over-temperature protection and input under
voltage lockout can be added for better system protection
and performance.
The Discrete Solution
requires a significant number of
components to implement the features that the ISL6550 can
provide.
FIGURE 18A. FULL BRIDGE AND CURRENT DOUBLER
FIGURE 18B. CONVENTIONAL FULL BRIDGE
FIGURE 18C. PUSH-PULL AND CURRENT DOUBLER
FIGURE 18D. CONVENTIONAL PUSH-PULL
P+
P–
S +
S–
P+
P–
S +
V
OUT
F
S–
S +
V
IN
F
S–
P1–
P2–
or CURRENT_SEN_P
S +
V
OUT
F
S–
V
IN
F
P1–
P2–
or CURRENT_SEN_P
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
VCC
VOPP
VOPM
VOPOUT
VREF5
GND
OVUVTH
BDAC
DACHI
DACLO
UVDLY
PGOOD
START
PEN
OVUVSEN
VID0
VID1
VID2
VID3
VID4
PGOOD
START
PEN
BDAC
VREF5
VOPOUT
FIGURE 19. ISL6550 SOIC
ISL6551
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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(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(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)