XL4015 [ETC]
5A 180KHz 36V Buck DC to DC Converter; 5A 180KHz 36V降压型直流对直流转换器
| 型号： | XL4015 |
| 厂家： | 
ETC |
| 描述： | 5A 180KHz 36V Buck DC to DC Converter |
| 文件： | 总9页 (文件大小：298K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
联系人：曹中立
电话：13428706223 QQ：1157008115
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Features
General Description
n Wide 8V to 36V Input Voltage Range
n Output Adjustable from 1.25V to 32V
The XL4015 is a 180 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 5A load with high
efficiency, low ripple and excellent line and
n
n
Maximum Duty Cycle 100%
Minimum Drop Out 0.3V
n Fixed 180KHz Switching Frequency
n 5A Constant Output Current Capability
n Internal Optimize Power MOSFET
load regulation. Requiring
a
minimum
number of external components, the regulator
is simple to use and include internal
n
n
n
n
n
n
High efficiency up to 96%
frequency
compensation
and
a
Excellent line and load regulation
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in TO263-5L package
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An over
current protection function is built inside.
When short protection function happens, the
operation frequency will be reduced from
180KHz to 48KHz. An internal compensation
block is built in to minimize external
component count.
Applications
n LCD Monitor and LCD TV
n Portable instrument power supply
n Telecom / Networking Equipment
Figure1. Package Type of XL4015
Rev 1.1
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1
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Pin Configurations
Figure2. Pin Configuration of XL4015 (Top View)
Table 1 Pin Description
Pin Number
Pin Name Description
Ground Pin. Care must be taken in layout. This pin should be
placed outside of the Schottky Diode to output capacitor
ground path to prevent switching current spikes from inducing
voltage noise into XL4015.
Feedback Pin (FB). Through an external resistor divider
network, FB senses the output voltage and regulates it. The
feedback threshold voltage is 1.25V.
1
GND
FB
2
Power Switch Output Pin (SW). SW is the switch node that
supplies power to the output.
3
4
SW
VC
Internal Voltage Regulator Bypass Capacity. In typical system
application, The VC pin connect a 1uf capacity to VIN.
Supply Voltage Input Pin. XL4015 operates from a 8V to 36V
DC voltage. Bypass Vin to GND with a suitably large
capacitor to eliminate noise on the input.
5
VIN
Rev 1.1
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2
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Function Block
Figure3. Function Block Diagram of XL4015
Typical Application Circuit
Figure4. XL4015 Typical Application Circuit (VIN=8V~36V, VOUT=5V/5A)
Rev 1.1
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3
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Ordering Information
Part Number
Lead Free
Marking ID
Lead Free
XL4015E1
Packing Type
800 Units on Tape & Reel
Temperature
Range
Package
XL4015E1
XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.
Absolute Maximum Ratings（Note1）
Parameter
Symbol
Vin
Value
-0.3 to 40
Unit
V
Input Voltage
Feedback Pin Voltage
-0.3 to Vin
V
VFB
Output Switch Pin Voltage
Power Dissipation
-0.3 to Vin
V
VOutput
PD
Internally limited
mW
Thermal Resistance (TO263-5L)
(Junction to Ambient, No Heatsink, Free Air)
Operating Junction Temperature
Storage Temperature
30
ºC/W
RJA
-40 to 125
-65 to 150
260
ºC
ºC
ºC
V
TJ
TSTG
TLEAD
Lead Temperature (Soldering, 10 sec)
ESD (HBM)
>2000
Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage
to the device. This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
Rev 1.1
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4
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
XL4015 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
System parameters test circuit figure4
Feedback
Voltage
Vin = 8V to 40V, Vout=5V
VFB
1.225 1.25 1.275
V
%
%
Iload=0.5A to 5A
Vin=12V ,Vout=5V
Iout=5A
Efficiency
Efficiency
-
-
87
93
-
-
ŋ
ŋ
Vin=24V ,Vout=12V
Iout=5A
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=500mA, Ta =
25℃; the others floating unless otherwise specified.
Parameters
Symbol
Vin
Test Condition
Min. Typ. Max.
Unit
V
Input operation voltage
Quiescent Supply Current
8
36
5
Iq
VFB =Vin
2.1
180
48
mA
Oscillator Frequency
Output Short Frequency
Switch Current Limit
Max. Duty Cycle
Fosc
Fosp
IL
144
216
KHz
KHz
A
VFB =0
7
DMAX
VFB=0V
100
%
VFB=0V, Vin=12V,
ISW=5A
Output Power PMOS
Rdson
60
80
mohm
Rev 1.1
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5
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Typical System Application (VOUT=5V/5A)
Figure5. XL4015 System Parameters Test Circuit (VIN=8V~36V, VOUT=5V/5A)
Efficiency VS Load current
100
95
90
85
80
Vin=8V,Vout=5V
Vin=12V,Vout=5V
75
Vin=24V,Vout=5V
Vin=36V,Vout=5V
70
65
60
55
50
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Load current(A)
Figure6. XL4015 System Efficiency Curve
Rev 1.1
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6
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Typical System Application (VOUT=12V/5A)
Figure7. XL4015 System Parameters Test Circuit (VIN=15V~36V, VOUT=12V/5A)
Efficiency VS Load current
100
95
90
85
80
Vin=15V,Vout=12V
Vin=24V,Vout=12V
Vin=36V,Vout=12V
75
70
65
60
55
50
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Load current(A)
Figure8. XL4015 System Efficiency Curve
Rev 1.1
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Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Schottky Diode Selection Table
Current Surface Through VR (The same as system maximum input voltage)
Mount Hole
20V
30V
40V
50V
60V
1N5817
1N5818
1N5819
1A
3A
√
1N5820
MBR320
SK32
1N5821
MBR330
SK33
1N5822
√
√
MBR340 MBR350
SK34 SK35
MBR360
SK36
√
√
30WQ03
31DQ03
SR303
30WQ04 30WQ05
31DQ04 31DQ05
√
√
SR302
SR304
SR305
SR306
1N5823
SR502
SB520
SK52
1N5824
SR503
SB530
SK53
1N5825
SR504
SB540
SK54
√
√
√
SR505
SB550
SK55
SR506
SB560
SK56
5A
√
√
50WQ03
50WQ04 50WQ05
Rev 1.1
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8
Datasheet
XL4015
5A 180KHz 36V Buck DC to DC Converter
Package Information
TO263-5L
Rev 1.1
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9
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