AP1511 데이터 시트보기 (PDF) - Anachip Corporation
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AP1511 Datasheet PDF : 5 Pages
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PWM Control 5A Step-Down Converter
AP1511
Typical Performance Characteristics
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.0
Efficiency (Vin=+5V)
Vout:3.3V
1.0 2.0 3.0 4.0 5.0 6.0
Iout (A)
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.0
Efficiency (Vin=+12V)
Vout:3.3V
Vout:5.0V
1.0 2.0 3.0 4.0 5.0 6.0
Iout (A)
Test Circuit
open
PVcc OUTPUT
VCC
FB
OCSET
open
A
EN VSS
PVcc OUTPUT
A
VCC
FB
+
OCSET
-
EN VSS
Enable function test
Feedback function test
PVcc OUTPUT
VCC
FB
+
OCSET
-
EN VSS
+
V
-
Operation function test
Function Description
PWM Control
The AP1511 consists of DC/DC converters that
employ a pulse-width modulation (PWM) system.
In converters of the AP1511, the pulse width varies
in a range from 0 to 100%, according to the load
current. The ripple voltage produced by the
switching can easily be removed through a filter
because the switching frequency remains constant.
Therefore, these converters provide a low-ripple
power over broad ranges of input voltage and load
current.
Anachip Corp.
www.anachip.com.tw
Rev. 1.5 Apr 10, 2006
4/5
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