参数资料
型号: EL7571CMZ
厂商: Intersil
文件页数: 11/19页
文件大小: 0K
描述: IC CTRLR PWM PROGRAMMABLE 20SOIC
标准包装: 38
应用: 控制器,Intel Pentium? II,Pro
输入电压: 4.5 V ~ 12.6 V
输出数: 2
输出电压: 1.3 V ~ 3.5 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SO
包装: 管件
EL7571
MANUFACTURER
MegaMos
MegaMos
Siliconix
Fuji
IR
Motorola
MODEL
Mi4410
Mip30N03A
Si4410
2SK1388
IRF3205S
MTB75N05HD
V GS
4.5V
4.5V
4.5V
4V
4
4
R ON (MAX)
20m ?
22m ?
20m ?
37m ?
8m ?
7m ?
C GS
6.4nF
6.3nF
4.3nF
17nF (max)
7.1nF
ID
±10A
±15A
±10A
±17.5A
±98A
±75A
VDS
30V
30V
30V
55V
50V
PACKAGE
SO-8
TO-220
SO-8
TO-220
D2Pak
TO-220
Skottky Diode, D 2
In the non-synchronous scheme a flyback diode is required
to provide a current path to the output when the high side
power MOSFET, Q 1 , is switched off. The critical criteria for
The product of forward voltage drop and condition current is
a primary source of power dissipation in the convertor. The
Schottky diode selected is the International Rectifier
32CTQ030 which has 0.4V of forward voltage drop at 15A.
selecting D 2 is that it must have low forward voltage drop.
Block Diagram
In Regulation
ENABLE
1.5μH
0.1μF
L 2
C 1
V IN
OTEN
REF
FB
C S
PWRGD
V INP
4.5V to
12.6V
3mF
Reference
4V
UVLO HI
+
+
-
+
-
V HI
-
+
Current Reversal
HSD
+
UVLO LOW
-
0.1μF
-
3.5V
+
LX
VID
(0:4)
DAC
-
+
-
PWM
Control Logic
LSD
5.1μH
L 1
7.5m ?
V OUT
C 2
+
6mF
C SLOPE
Ramp Control
-
Soft
Start
240pF
220pF
C OSC
Oscillator
ENABLE
11
GND
GNDP
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