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AP1501_09 [DIODES]

150KHz, 3A PWM BUCK DC/DC CONVERTER; 为150KHz ， 3A PWM降压型DC / DC转换器
AP1501_09
型号： AP1501_09
厂家： DIODES INCORPORATED    DIODES INCORPORATED
描述：

150KHz, 3A PWM BUCK DC/DC CONVERTER
为150KHz ， 3A PWM降压型DC / DC转换器

转换器
文件： 总12页 (文件大小：190K)
中文：  中文翻译
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AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
General Description  
Features  
The AP1501 is a fully integrated step-down DC/DC converter,  
with the ability to drive 3A load without the need of additional  
•
•
Output voltage: 3.3V, 5V, 12V and adjustable output  
version  
Adjustable version output voltage range, 1.23V to  
37V+4%  
150KHZ +15% fixed switching frequency  
Voltage mode non-synchronous PWM control  
Thermal-shutdown and current-limit protection  
ON/OFF shutdown control input  
Operating voltage can be up to 40V  
Output load current: 3A  
driver components. The AP1501 operates at  
a switching  
frequency of 150KHZ enabling the use of small size filter  
components. As a result, board space is reduced and BOM costs  
are lowered.  
•
•
•
•
•
•
•
•
•
•
The AP1501 has integrated the shutdown function that allows  
standby mode to be activated via an external logic signal input.  
The internal compensation facilitates feedback control for line  
and load regulation without the need of an external circuitry. The  
AP1501 has a built-in Thermal shutdown and Current Limit  
function to prevent damage from high operating temperature and  
high current operating to the output switch.  
Low power standby mode  
Built-in switching transistor on chip  
Lead Free packages: TO263-5L and TO220-5L(R)  
TO263-5L and TO220-5L(R): Available in “Green”  
Molding Compound (No Br, Sb)  
Additional features include a guaranteed +/- 4% tolerance on the  
output voltage under specified input and output load conditions,  
and +/- 15% on oscillator frequency. The AP1501 offers both  
fixed and a Adjustable output voltages. For fixed outputs the  
AP1501 supports 3.3V, 5.0V and 12V. The package options  
available are standard 5-lead TO263 and TO220(R) packages.  
•
Lead Free Finish/RoHS Compliant (Note 1)  
Applications  
•
•
•
Simple High-efficiency step-down regulator  
On-card switching regulators  
Positive to negative converter  
Ordering Information  
AP1501 - XX XXX X - X  
Package  
Lead Free  
Packing  
U : Tube  
13 : Tape & Reel  
Output version  
L : Lead Free  
G : Green  
K5 : TO263-5L  
T5 : TO220-5L  
Blank : Adjustable  
33 : 3.3V  
T5R : TO220-5L(R)  
50 : 5.0V  
12 : 12V  
Tube  
13” Tape and Reel  
Package Packaging  
Device  
Quantity Part Number  
Suffix  
Quantity  
Part Number  
Code  
(Note 2)  
Suffix  
NA  
Lead-free  
Lead-free  
AP1501-XXK5L-U  
AP1501-XXK5L-13  
AP1501-XXK5G-U  
AP1501-XXK5G-13  
AP1501-XXT5L-U  
AP1501-XXT5G-U  
AP1501-XXT5RL-U  
AP1501-XXT5RG-U  
K5  
K5  
K5  
K5  
T5  
T5  
T5R  
T5R  
TO263-5L  
TO263-5L  
TO263-5L  
TO263-5L  
TO220-5L  
TO220-5L  
TO220-5L(R)  
TO220-5L(R)  
50  
NA  
50  
NA  
50  
50  
50  
50  
-U  
NA  
-U  
NA  
-U  
-U  
-U  
-U  
NA  
800/Tape & Reel  
-13  
NA  
NA  
800/Tape & Reel  
-13  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
Lead-free  
Lead-free  
Notes:  
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.  
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at  
http://www.diodes.com/datasheets/ap02001.pdf..  
AP1501 Rev. 11  
1 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Pin Assignments  
( Top View )  
( Top View )  
5 SD  
4 FB  
3 Gnd  
2 Output  
1 VIN  
5 SD  
4 FB  
3 Gnd  
2 Output  
1 VIN  
Metal Tab GND  
TO220-5L/TO220-5L(R)  
TO263-5L  
Pin Descriptions  
Name  
Description  
VIN  
Output  
Gnd  
FB  
Operating voltage input  
Switching output  
Ground  
Output voltage feedback control  
ON/OFF shutdown  
SD  
AP1501 Rev. 11  
2 of 12  
www.diodes.com  
JANUARY 2009  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Block Diagram  
SD  
VIN  
200mV  
220mV  
Current  
Source  
bias  
1.235V  
Reference  
2.5V  
Regulator  
Start  
up  
+
Comp  
_
_
Comp  
+
Frequency  
compen-  
sation  
+
_
Amp  
3A  
Switch  
_
Comp  
+
Pre-driver  
FB  
Output  
Gnd  
150kHz  
OSC.  
Thermal  
Shutdown  
Absolute Maximum Ratings  
Symbol  
ESD MM  
VCC  
Parameter  
Rating  
400  
Unit  
V
Machine Model ESD Protection  
Supply Voltage  
+45  
V
VSD  
ON/OFF Pin input Voltage  
Feedback Pin Voltage  
-0.3 to +40  
-0.3 to +40  
-1  
V
VFB  
V
VOUT  
PD  
Output Voltage to Ground  
Power Dissipation  
V
Internally limited  
-65 to +150  
-20 to +125  
150  
W
oC  
oC  
oC  
TST  
Storage Temperature  
TJ  
Operating Junction Temperature  
Maximum Junction Temperature  
TMJ  
AP1501 Rev. 11  
3 of 12  
www.diodes.com  
JANUARY 2009  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Recommended Operating Conditions  
Symbol  
Parameter  
Units  
Rating  
4.5 to 40  
-20 to 85  
VOP  
TA  
Operating Voltage  
Operating Ambient Temperature  
V
oC  
Electrical Characteristics (All Output Voltage Versions)  
Unless otherwise specified, VIN = 12V for 3.3V, 5V, adjustable version and VIN = 24V for the 12V version. ILOAD = 0.5A  
Specifications with boldface type are for full operating temperature range, the other type are for TJ = 25ºC.  
Symbol  
Parameter  
Conditions  
Min  
Typ.  
Max  
Unit  
60  
VFB = 1.3V  
(Adjustable version only)  
IFB  
Feedback Bias Current  
nA  
40  
100  
173  
173  
1.4  
127  
110  
150  
FOSC  
VSAT  
DC  
ICL  
Oscillator Frequency  
Saturation Voltage  
KHZ  
I
OUT = 3A  
V
%
A
No outside circuit  
VFB = 0V force driver on  
1.3  
1.5  
Max. Duty Cycle(ON)  
Min. Duty cycle(OFF)  
V
V
FB = 0V force driver on  
FB = 12V force driver off  
100  
0
Peak current  
5.5  
Current Limit  
no outside circuit  
VFB = 0V force driver on  
No outside circuit  
3.6  
4.0  
6.5  
Output  
Output = 0  
uA  
200  
IL  
Leakage VFB = 12V force driver off (Note 3)  
Current  
Quiescent Current  
Standby Quiescent  
Current  
Output = -1  
mA  
mA  
VIN = 40V  
2
5
60  
10  
250  
350  
0.6  
IQ  
ISTBY  
VIL  
VFB = 12V force driver off  
ON/OFF pin = 5V  
VIN = 40V  
uA  
150  
Low (regulator ON)  
ON/OFF pin Logic Input  
Threshold Voltage  
V
1.3  
VIH  
High (regulator OFF)  
VLOGIC = 2.5V (OFF)  
VLOGIC = 0.5V (ON)  
2.0  
ON/OFF Pin Logic  
Input Current  
ON/OFF Pin Input  
Current  
IH  
IL  
15  
25  
5
uA  
0.02  
TO263-5L (Note 4)  
TO220-5L(R) (Note 4)  
TO263-5L (Note 4)  
37  
31  
6
Thermal Resistance  
unction to Ambient  
θJA  
oC/W  
Thermal Resistance  
Junction to Case  
θJC  
oC/W  
TO220-5L(R) (Note 4)  
5
Notes:  
3. Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Feedback pin removed from output and  
connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15V for the 12V version, to force the output transistor switch OFF.  
4. Test condition: Device mounted with copper area of approximately 3 in2,1oz, no air flow.  
AP1501 Rev. 11  
4 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Electrical Characteristics (Continued)  
Specifications with boldface type are for full operating temperature range, the other type are for TJ = 25ºC.  
Symbol  
Parameter  
Conditions  
VMin  
Typ.  
VMax  
Unit  
4.5V < VIN < 40V  
0.2A < ILOAD < 3A  
VOUT programmed for 3V  
Output  
Feedback  
1.193  
1.18  
1.267  
1.28  
V
VFB  
1.23  
AP1501-ADJ  
η
Efficiency  
Output Voltage  
Efficiency  
VIN = 12V, ILOAD = 3A  
73  
3.3  
73  
5
%
V
4.75V < VIN < 40V  
0.2A < ILOAD < 3A  
3.168  
3.135  
3.432  
3.465  
VOUT  
AP1501-3.3V  
AP1501-5V  
AP1501-12V  
η
VIN = 12V, ILOAD = 3A  
%
V
7V < VIN < 40V  
0.2A < ILOAD < 3A  
4.8  
4.75  
5.2  
5.25  
VOUT  
Output Voltage  
Efficiency  
η
VIN = 12V, ILOAD = 3A  
80  
12  
90  
%
V
15V < VIN < 40V  
0.2A < ILOAD < 3A  
11.52  
11.4  
12.48  
12.6  
VOUT  
Output Voltage  
Efficiency  
η
VIN = 15V, ILOAD = 3A  
%
AP1501 Rev. 11  
5 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHZ, 3A PWM BUCK DC/DC CONVERTER  
Typical Performance Characteristics  
Typical Performance Characteristics  
Normalized Output Voltage  
Efficiency  
100  
5.10  
5.05  
5.00  
4.95  
4.90  
VIN =20V, ILOAD=3A  
Normalized at T =25oC  
J
95  
90  
3A Load  
85  
80  
75  
70  
65  
5V  
3.3V  
-50 -25  
0
25  
50 75 100 125  
30  
40  
8
10 15  
20  
25  
35  
JUNCTION TEMPERATURE( oC)  
JUNCTION TEMPERATURE( oC)  
Switch Saturation Voltage  
Switch Current Limit  
5.50  
5.00  
4.50  
4.00  
3.50  
1.60  
1.40  
1.20  
1.00  
0.80  
0.60  
1 : -40 oC  
VIN=12V, VOUT=5V  
2 : 25 oC  
3 : 125 oC  
1
2
3
0.5  
2
3
1
-50 -25  
0
25 50 75 100 125  
SWITCH CURRENT(A)  
JUNCTION TEMPERATURE( oC)  
Shutdown Quiescent Current  
Operating Quiescent Current  
200.0  
160.0  
120.0  
80.0  
40.0  
0.0  
25.0  
20.0  
15.0  
10.0  
5.0  
Switch ON  
1
2
VON/OFF=5V  
1 : -40 oC  
2 : 25 oC  
3
Switch OFF  
o
3 : 125 C  
0.0  
-50 -25  
0
25  
50 75 100 125  
10  
20  
30  
40  
JUNCTION TEMPERATURE( oC)  
SUPPLY VOLOTAGE (V)  
AP1501 Rev. 11  
6 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Typical Performance Characteristics (Continued)  
ON/OFF Threshold Voltage  
Minimum Operating Supply Voltage  
5.0  
4.0  
3.0  
2.0  
1.0  
0.0  
5.0  
4.0  
3.0  
2.0  
1.0  
0.0  
VOUT=1.23V  
ILOAD=120mA  
-50  
0
100 125  
25 50 75  
-25  
-50 -25  
0
25 50 75 100 125  
JUNCTION TEMPERATURE (oC)  
JUNCTION TEMPERATURE (oC)  
Switch Frequency  
ON/OFF Pin Current (Sinking)  
200.0  
150.0  
100.0  
50.0  
150.0  
VIN=40V  
120.0  
90.0  
60.0  
30.0  
0.0  
-40oC  
T
125oC  
≤
≤
J
0.0  
-50 -25  
0
25 50 75 100 125  
1.4  
5
10 15 20 22 23 24 25  
JUNCTION TEMPERATURE (oC)  
ON/OFF PIN VOLTAGE (V)  
Feedback Pin Bias Current  
50.0  
40.0  
30.0  
20.0  
10.0  
0.0  
Adjustable Version Only  
-50 -25  
0
25 50 75 100 125  
JUNCTION TEMPERATURE(oC)  
AP1501 Rev. 11  
7 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Typical Application Circuit  
(1) Fixed Type Circuit  
FB  
12V  
DC Input  
L1  
4
3.3V/3A  
33uH  
Output  
Output Load  
AP1501  
1
2
-33  
Vin  
Inductor  
5
3
SD  
Gnd  
Cin  
Capacitor  
Co  
Capacitor  
D1  
B340A  
(2) Adjustable Type Circuit  
R1  
R2  
FB  
L1  
47uH  
12V  
DC Input  
4
5V/ 3A  
Output Load  
Output  
1
AP1501  
2
Vin  
5
3
SD  
Gnd  
Cin  
Capacitor  
Co  
Capacitor  
D1  
(Note 5)  
R1  
R2  
Vout = VFB ×(1 +  
FB = 1.23V  
)
V
R2 = 1K ~ 3K  
(3) Delay Start Circuit  
R2  
R1  
FB  
4
L1  
47uH  
12V  
DC Input  
5V/ 3A  
Output Load  
Output  
1
AP1501  
2
Vin  
CDELAY  
0.1uF  
5
3
SD  
RDELAY  
10K  
Gnd  
Cin  
Capacitor  
Co  
Capacitor  
D1  
(Note 5)  
Notes:  
5. Suggested DIODES Power Schottky: B340A or PDS340 series.  
AP1501 Rev. 11  
8 of 12  
www.diodes.com  
JANUARY 2009  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Functional Description  
Pin Functions  
+VIN  
PC board to simulate the junction temperature under actual  
operating conditions. This curve can be used for a quick check  
for the approximate junction temperature for various conditions,  
but be aware that there are many factors that can affect the  
junction temperature. When load currents higher than 2A are  
used, double sided or multilayer PC boards with large copper  
areas and/or airflow might be needed, especially for high ambient  
temperatures and high output voltages.  
This is the positive input supply for the IC switching regulator. A  
suitable input bypass capacitor must be present at this pin to  
minimize voltage transients and to supply the switching currents  
needed by the regulator.  
Ground  
Circuit ground.  
For the best thermal performance, wide copper traces and  
generous amounts of printed circuit board copper should be used  
Output  
in the board layout. (One exception to this is the output (switch)  
pin, which should not have large areas of copper.) Large areas  
of copper provide the best transfer of heat (lower thermal  
resistance) to the surrounding air, and moving air lowers the  
thermal resistance even further.  
Internal switch. The voltage at this pin switches between (+VIN  
VSAT and approximately 0.5V, with duty cycle of  
approximately VOUT / VIN To minimize coupling to sensitive  
circuitry, the PC board copper area connected to this pin should  
be kept a minimum.  
–
)
–
a
.
Package thermal resistance and junction temperature rise  
numbers are all approximate, and there are many factors that will  
affect these numbers. Some of these factors include board size,  
shape, thickness, position, location, and even board temperature.  
Other factors are, trace width, total printed circuit copper area,  
copper thickness, single or double-sided, multilayer board and  
the amount of solder on the board. The effectiveness of the  
PC board to dissipate heat also depends on the size, quantity  
and spacing of other components on the board, as well as  
whether the surrounding air is still or moving.  
Feedback  
Senses the regulated output voltage to complete the feedback  
loop.  
ON/OFF  
Allows the switching regulator circuit to be shutdown using logic  
level signals thus dropping the total input supply current to  
approximately 150uA. Pulling this pin below a threshold voltage  
of approximately 1.3V turns the regulator on, and pulling this pin  
above 1.3V (up to a maximum of 40V) shuts the regulator down.  
If this shutdown feature is not needed, the ON/OFF pin can be  
wired to the ground pin or it can be left open, in either case the  
regulator will be in the ON condition.  
Furthermore, some of these components such as the catch diode  
will add heat to the PC board and the heat can vary as the input  
voltage changes. For the inductor, depending on the physical  
size, type of core material and the DC resistance, it could either  
act as a heat sink taking heat away from the board, or it could  
add heat to the board.  
Thermal Considerations  
The AP1501 is available in 5-pin surface mount TO-263 and  
TO-220.  
The TO-220 package needs a heat sink under most conditions.  
The size of the heat sink depends on the input voltage, the output  
voltage, the load current and the ambient temperature. The  
AP1501 junction temperature rises above ambient temperature  
for a 3A load and different input and output voltages. The data  
for these curves was taken with the AP1501 (TO-220 package)  
operating as  
a buck switching regulator in an ambient  
temperature of 25oC (still air). These temperature rise numbers  
are all approximate and there are many factors that can affect  
these temperatures. Higher ambient temperatures require more  
heat sinking.  
The TO-263 surface mount package tab is designed to be  
soldered to the copper on a printed circuit board. The copper  
and the board are the heat sink for this package and the other  
heat producing components, such as the catch diode and  
inductor. The PC board copper area that the package is  
soldered to should be at least 0.4 in2, and ideally should have  
2 or more square inches of 2 oz. Additional copper area improves  
the thermal characteristics, but with copper areas greater than  
approximately 6 in2, only small improvements in heat dissipation  
are realized. If further thermal improvements are needed, double  
sided, multilayer PC boards with large copper areas and/or  
airflow are recommended.  
The AP1501 (TO-263 package) junction temperature rises above  
ambient temperature with a 2A load for various input and output  
voltages. This data was taken with the circuit operating as a  
buck switching regulator with all components mounted on a  
AP1501 Rev. 11  
9 of 12  
www.diodes.com  
JANUARY 2009  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Marking Information  
(1) TO263-5L  
( Top View )  
Logo  
L : Lead Free  
G : Green  
ID code  
Xth week : 01~52  
Year : "07" = 2007  
"08" = 2008  
Output Type :  
1501 : ADJ  
1501-33 : 3.3V  
1501-50 : 5.0V  
1501-12 : 12V  
1501-XX  
YY WW X X  
(2) TO220-5L(R)  
( Top view )  
Logo  
1501-XX  
YY WW X X  
Output Type :  
1501: ADJ  
1501-33: 3.3V  
1501-50: 5.0V  
1501-12: 12V  
L : Lead Free  
G : Green  
ID code  
Xth week : 01~52  
Year : "07" = 2007  
"08" = 2008  
AP1501 Rev. 11  
10 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Package Information  
(1) Package Type: TO263-5L  
(2) Package Type: TO220-5L  
AP1501 Rev. 11  
11 of 12  
www.diodes.com  
JANUARY 2009  
© Diodes Incorporated  
AP1501  
150KHz, 3A PWM BUCK DC/DC CONVERTER  
Package Information (Continued)  
(3) Package Type: TO220-5L(R) Mechanical drawing  
IMPORTANT NOTICE  
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further  
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither  
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will  
agreeto hold Diodes Incorporatedand all the companieswhose products are represented onour website, harmlessagainst all damages.  
LIFE SUPPORT  
Diodes Incorporated productsare not authorizedfor use as criticalcomponents in lifesupport devices or systemswithout theexpressed written approval of the  
President of DiodesIncorporated.  
AP1501 Rev. 11  
12 of 12  
JANUARY 2009  
www.diodes.com  
© Diodes Incorporated  

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DIODES

AP1502-33S7L

 Switching Regulator/Controller, Voltage-mode, 1A, 250kHz Switching Freq-Max, PDSO8,
ANACHIP

AP1502-33S7LA

 Switching Regulator/Controller, Voltage-mode, 1A, 250kHz Switching Freq-Max, PDSO8,
ANACHIP
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