超高效率,双路降压型
控制器,用于笔记本电脑
_____________________________Typical工作特性(续)
从表1中, V分量(线路图1的
IN
= +15V,
SKIP
= AGND , TON =悬空,T
A
= + 25 ℃,除非另有说明。 )
频率与温度
( 2.5V , 4A组件, SKIP =高)
MAX1715-12
MAX1715
空载电流与输入电压
( OUT1 = 1.8V , 4A组件;
OUT2 = 2.5V , 4A组件; SKIP = GND)
MAX1715-13
250
频率(kHz )
200
150
100
50
0
-40
-20
0
20
40
60
600
电源电流( μA )
500
400
300
200
100
0
I
CC
10
电源电流(mA )
8
6
4
2
0
I
IN
I
DD
I
DD
I
BATT
0
5
10
15
20
25
30
I
CC
0
5
10
15
20
25
30
80
温度(℃)
输入电压( V)
输入电压( V)
负载瞬态响应
( 2.5V , 4A组件, SKIP = GND)
MAX1715-15
启动波形
( 2.5V , 4A器件,有源负载)
MAX1715-16
负载瞬态响应
( 1.3V , 8A组件, SKIP = GND)
A
MAX1715-17
A
A
B
B
C
A = V
OUT
, AC耦合,为100mV / DIV
B =电感电流2A / DIV
C = DL , 10V / DIV
B
C
A = V
OUT
, 2V / DIV
B =电感电流2A / DIV
C = DL , 10V / DIV
C
A = V
OUT
, AC耦合,为100mV / DIV
B =电感电流5A / DIV
C = DL , 10V / DIV
输出过载波形
( 2.5V , 4A组件, SKIP = GND)
MAX1715-18
关断波形
( 2.5V , 4A组件, SKIP = GND)
MAX1715-19
A
B
A
B
C
A = V
OUT
, 2V / DIV
B =电感电流5A / DIV
C = DL , 10V / DIV
C
A = V
OUT
, 2V / DIV
B =电感电流5A / DIV
C = DL , 10V / DIV
_______________________________________________________________________________________
MAX1715-14
300
700
空载电流与输入电压
( OUT1 = 1.8V , 4A组件;
OUT2 = 2.5V , 4A组件; SKIP = V
CC
)
12
7