|
|
PDF MP6002 Data sheet ( Hoja de datos )
| Número de pieza | MP6002 | |
| Descripción | Monolithic Flyback - Forward DC-DC Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP6002 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
MP6002
DC-DC
The Future of Analog IC Technology
DESCRIPTION
The MP600 2 is a mon olithic Flyba ck/Forward
DC-DC converter which includes a 150V power
switch and is capable of delivering up to 30W
output power. It can also be used for boost and
SEPIC applications.
The MP6002 uses the fixed-frequency peak
current mode primary c ontroller architecture. It
has an in ternal soft- start, auto- retry, and
incorporates over current, short circuit, an d
over-voltage protection. The MP600 2 can also
skip cycles to maintain zero load regulation.
It has a d irect optocoupler inter face which
bypasses the internal error amplifier when an
isolated output is desired.
The MP6002 is ideal for telecom applications,
and is av ailable in a compact, thermally
enhanced SO8 package with an exposed pad.
Monolithic Flyback/Forward
Converter
FEATURES
Integrated 0.45Ω 150V Power Switch
Cycle-by-Cycle Current Limiting
Programmable Switching Frequency
Duty Cycle Limiting with Line Feed Forward
Integrated 100V Startup Circuit
Internal Slope Compensation
Disable Function
Built-in Soft-Start
Line Under Voltage Lockout
Line Over Voltage Protection
Auto-Restart for Opened/Shorted Output
Zero Load Regulation
Thermal Shutdown
APPLICATIONS
Telecom Equipment
VoIP Phones, Power over Ethernet (PoE)
Distributed Power Conversion
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
+VIN
36V~72V
R1
249kΩ
C1
2.2μ F x 2
R2
9.76kΩ
C4
10μ F
-VIN
D1
1N4148
2
6
3
4
R8
1MΩ
LINE
8
SW
VCC
VIN
MP6002
FB GND
7
1
COMP
5
RT
R9
475kΩ
R10
20.5kΩ
D2
B330A
R7
402Ω
R6
30.1kΩ
VOUT
5V @ 3A
C2
470μ F
PC357
C3 R3
10nF 5.6kΩ
R4
1 kΩ
TL431
R5
10kΩ
Efficiency vs Load Current
0 0.5 1 1.5 2 2.5 3 3.5
LOAD CURRENT (A)
MP6002 Rev. 1.0
12/4/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
http://www.Datasheet4U.com
1 page  
MP6002 – MONOLITHIC FLYBACK/FORWARD DC-DC CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 48V, VOUT = 5V, TA = +25ºC, unless otherwise noted.
Steady State Test
VIN = 48V, VOUT = 5V, IOUT = 3A
Synchronize Programmable
FSW = 55KHz, FSYNC=60KHz.
Synchronize Programmable
FSW = 55KHz, FSYNC=550KHz
VOUT
AC Coupled
50mV/div.
VSW
50V/div.
IPRI
1A/div.
1us/div.
VOUT
5V/div.
VSYNC
5V/div.
VSW
50V/div.
IPRI
1A/div.
10us/div.
VOUT
5V/div.
VSYNC
5V/div.
VSW
50V/div.
IPRI
500mA/div.
2us/div.
Short Circuit State
VIN = 48V, IOUT = 3A
VOUT
2V/div.
VCC
2V/div.
VSW
100V/div.
IPRI
2A/div.
40ms/div.
Short Circuit Entry
VIN = 48V, IOUT = 3A
VOUT
5V/div.
VCC
2V/div.
VSW
100V/div.
IPRI
2A/div.
20ms/div.
Short Circuit Recovery
VIN = 48V, IOUT = 3A
VOUT
5V/div.
VCC
2V/div.
VSW
100V/div.
IPRI
2A/div.
40ms/div.
Load Transient Response
VIN = 48V, VOUT = 5V,
IOUT = 1.5A~3A @ 2.5A/us
VOUT
50mV/div.
IPRI
1A/div.
400υs/div.
Current Limit vs Duty Cycle
5.00
4.75
4.50
4.25
4.00
3.75
3.50
3.25
3.00
10 20 30 40 50 60 70
Duty Cycle(%)
MP6002 Rev. 1.0
12/4/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
5 Page 
MP6002 – MONOLITHIC FLYBACK/FORWARD DC-DC CONVERTER
2. Ripple Factor of the Magnetizing Current
The conduction loss in S, D2, the t ransformer,
the snubber, and in the ESR of the input/output
capacitors will increase as the ri pple of the
magnetizing current increases. The ripple factor
(Kr) is defin ed as the r atio of the peak-to-peak
ripple current vs. the average current as shown
in Figure 3.
Kr
IM
IM
Where I M can be deriv ed either fr om input or
output current;
IM
IIN
D
I0
N (1 D)
ID2/N
IM
IM
0 DTS
TS
Figure 3—Magnetic Current of Flyback
Transformer (Reflected to Primary Side)
The input/ output ripp le voltage will also
increase with a high ripple factor, which make s
the filter bigger and more expensive. On the
other hand, it can help t o minimize the turn-on
loss of S and reverse-re covery loss due to D2.
With nominal input volt age, Kr can be selected
at 60%~120% for most DC-DC converters.
The primary side (or magnetizing) inductance
can be determined by:
LF
VIN D TS
K r IM
3. Core Selection
Pick a core based on experience or through a
catalog (Refer to http://www.ferroxcube.com).
Select an ER, EQ, PQ, or RM core to minimize
the transformer’s leakage inductance.
4. Winding Selection
Solid wire, Litz wire, PCB winding, Flex PCB
winding or any combination thereof can be used
as transfor mer windi ng. For low current
applications, solid wire is the most cost effective
choice. Consider using several wires in parallel
and interleaving the winding structur e for better
performance of the transformer.
The number of primary turns can be determined
by:
NP
LF IP
BMAX A E
Where B MAX is the a llowed maximum flu x
density (usually below 300mT) and A E is th e
effective area of the core.
The air gap can be estimated by:
Gap
o
N2
LF
AE
5. Right Half Plane Zero
A Flyback converter operating in continuous
mode has a right half plane (RHP) zero. In the
frequency domain, this RHP zero adds not only
a phase lag to the control characteristics but
also increases the gain of the circuit. Typical
rule of thumb states that the highest usable
loop crossover frequency is limited to one third
the value of the RHP zero. The expression for
the location of the RHP zero in a continuous
mode flyback is given by:
fRHPZ
RLOAD
(1 D)2
2 LF
D
N2
Where R LOAD is the load resistance, L F is the
magnetizing inductance on transformer primary
side, and N is the transformer’s turn ratio.
Reducing the primary inductance increases the
RHP zero frequency which results in highe r
crossover frequencies.
MP6002 Rev. 1.0
12/4/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MP6002.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP6001 | Monolithic Flyback/Forward dd-DC Converter | MPS |
| MP6001DN-00A | Monolithic Flyback/Forward DC-DC Converter Evaluation Board | MPS |
| MP6001DN-00D | WLED Driver Evaluation Board | MPS |
| MP6002 | Monolithic Flyback - Forward DC-DC Converter | MPS |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |