Evaluation Board Report - Monolithic Power Systems

EV174-S-00A –
Univers al Input,
NON-ISOLATED
OFF-LINE REGULATOR
Evaluation Board Report
12V 3.6W ACDC power supply
Design Specs
Input Voltage
Output Voltage
Output Current
Isolation
MPS IC
Application
Value
85-265
12
0.3
Unit
VAC
VDC
A
No
MP174GS
Home Appliance, white goods, consumer electronics
Industrial Controls
Standby Power
Document Number
EBXXX
Author
Application Engineering Department
Date
Nov, 2014
Revision
1.0
Design Summary
EV174-S-00A evaluation board provides a reference design for a universal offline power supply with 12V,
0,3A output. It contains the complete specification of the power supply, a detailed circuit diagram, the
entire bill of materials required to build the power supply, drawing of the power inductors and
transformers, and test data of the most important performance.
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
1
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
DESCRIPTION
FEATURES
The EV174-S-00A Evaluation Board is designed
to demonstrate the capabilities of MP174. The
MP174 is a primary-side constant voltage
regulator providing accurate constant voltage
(CV) regulation without Opto-coupler. It
supports Buck, Buck-Boost, Boost and Flyback
topologies.
•
The EV174-S-00A Evaluation Board is designed
as Buck application. EV174-S-00A typically
drives a 3.6W with a 12V/300mA load from
85VAC to 265VAC, at 60/50Hz.
•
•
•
•
The EV174-S-00A has an excellent efficiency
and meets IEC61000-4-5 surge immunity and
EN55022 conducted EMI requirements. MP174
features various protections, including thermal
shutdown (TSD), VCC under-voltage lockout
(UVLO), over-load protection (OLP), shortcircuit protection (SCP), and open loop
protection.
MP174GS is available in SOIC8 package.
ELECTRICAL SPECIFICATION
Parameter
Symbol
Value
Units
85 to 265
12
0.3
VAC
V
A
Input Voltage
Output Voltage
Output Current
V IN
V OUT
I OUT
Output Power
P OUT
3.6
W
η
>75
%
Efficiency (full load)
•
•
•
•
•
•
Primary-Side non-isolated Constant Voltage
(CV) Control
Integrated 700V13.5ΩMOSFET
< 100mW No-load power consumption
Up to 3.6W output power
Peak-Current Control with Peak Current
Compression
Low Vcc operating current
Limited Maximum Frequency
Frequency Foldback
Multiple Protections: SCP, OCP, OTP, and
VCC UVLO
Low Cost and Simple External circuit
Internal high-voltage current source
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology”, are Registered Trademarks of Monolithic
Power Systems, Inc.
Warning: Although this board is designed to satisfy safety
requirements, the engineering prototype has not been
agency approved. Therefore, all testing should be performed
using an isolation transformer to provide the AC input to the
prototype board.
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
2
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EV174-S-00A EVALUATION BOARD
TOP VIEW
BOTTOM VIEW
(L x W x H) 68mm x 28mm x 17mm
Board Number
MPS IC Number
EV174-S-00A
MP174GS
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
3
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
MPS CONFIDENTIAL AND PROPRIETARY INFORMATION– INTERNAL USE ONLY
EVALUATION BOARD SCHEMATIC
Figure 1—Schematic
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
4
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
PCB LAYOUT (SINGLE-SIDED)
Figure 2—Top Layer
Figure 3—Bottom Layer
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
5
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EV174-S-00A BILL OF MATERIALS
Qty
Ref
Value
1
1
1
C1
C2
C3
220nF
2.2μF
470pF
2
C4, C5
1
1
1
5
1
1
1
1
1
1
1
1
1
Description
Ceramic Capacitor;16V;X7R
Ceramic Capacitor;10V;X7R
Ceramic Capacitor;50V;X7R
Electrolytic
10μF
Capacitor;400V;20%
100μF Electrolytic Capacitor;35V
1μF
Ceramic Capacitor;16V;X7R
1N4148WSDiode;75V;0.15A;
C6
C7
D1
D2, D3, D4,
1N4007 Diode;1000V;1A
D6, D7
D5
STTH1R06 Diode;600V;1A
F1
10Ω
Resistor;5%;1W
L1
1mH
Inductor;1000uH;8Ω;0.1A
L2
1.2mH Inductor;1.2mH;1.8Ω;400mA
R1
19.1kΩ Film Resistor;1%
R2
24kΩ Film Resistor;1%
R4
4.99kΩ Film Resistor;1%
R6
3kΩ
Film Resistor;1%
U1
MP174 Primary side regulator
Package Manufacture Manufacture_PN
0603
0603
0603
muRata
muRata
muRata
GRM188R71C224KA01D
GRM188R71A225KE15D
GRM188R71H471KA01D
DIP
Any
DIP
0603
SOD-323
Jianghai
muRata
Diodes
CD287-35V100
GRM188R71C105KA12D
1N4148WS-7-F
DO-41
Diodes
1N4007
DO-41
DIP
DIP
DIP
0603
0603
0603
1206
SOIC8
ST
Yageo
Any
Emei
Yageo
Yageo
Yageo
Yageo
MPS
STTH1R06
FKN1WSJT-52-10R
Any
DR9X12P2M1.2-00
RC0603FR-0719K1L
RC0603FR-0724KL
RC0603FR-074K99L
RC1206FR-073KL
MP174GS
Any
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
6
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
CIRCUIT DESCRIPTION
The EV174-S-00A is configured in a buck
regulator topology, it uses primary-side-control
which can mostly simplify the schematic and get a
cost effective BOM. It can also achieve accurate
constant voltage and acceptable cross regulation.
F1 is used to protect circuit from component
failure or some excessive short events; also it can
restrain the inrush current.
C4, L1 and C5 compose π filter to guarantee the
conducted EMI meet standard EN55022. C2 and
C3 are also used for energy storage and
protecting against line surge.
R2, C2, and D1 are used as VCC power supply.
Though MP174 is equipped with an internal high
voltage current source, using this circuit can
achieve better efficiency.
C1 is the sample-hold capacitor, used for
reflecting output voltage. R1 and R4 are resistor
divider for detecting output voltage by sampling
voltage on C1.
D5 is the freewheeling diode. For universal
voltage applications, use a diode with a 600V
reverse block voltage. Ultra-fast recovery diode is
recommended for better efficiency.
C6 and C7 are output capacitors for 12V output.
C6 should be low ESR electrolytic capacitor for
better output ripple. C7 is ceramic capacitor to
reduce high frequency voltage ripple. R6 is
dummy load to lower the output voltage of 12V
rail at no load condition.
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
7
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
Input voltage was set at 230VAC/50Hz. Output was
Surge Performance
loaded at full load and operation was verified
Line to Line 1kV surge tested according to
following each surge event.
IEC61000-4-5.
Surge Level
(V)
Input Voltage
(VAC)
Injection Location
Injection Phase
(°)
Test Result
(Pass/Fail)
1000
1000
1000
1000
-1000
-1000
-1000
-1000
230
230
230
230
230
230
230
230
L to N
L to N
L to N
L to N
L to N
L to N
L to N
L to N
0
90
180
270
0
90
180
270
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
The board can pass 2kV surge test by simple using 2 10ohm/1W fuse resistor, as the circuit show below.
D1
D2
1N4007
1N4148WS
F1
10/1W
F2
L1
10/1W
R5
D3
D4
1N4007
1N4007
85~265VAC
NC
C4
10uF/400V
NC
7
C5
10uF/400V
5
Drain
D7
1N4007
1N4007
Vcc
FB
NC
Source
NC
Source
MP174
D6
19.1K
1
220nF
NC
CX1
NC
24K
U1
6
RV1
R1
C1
1mH
8
L
R2
2
C3
3
C2
R3
R4
2.2uF
NC
4.99K
L2 1.2mH
12V/300mA
470pF
VOUT
4
D5
STTH1R06
C6
100uF/35V
C7
R6
1uF
3K
GND
N
GND
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
8
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EVB TEST RESULTS
Performance waveforms are tested on the evaluation board.
V IN =85-265VAC, V OUT =12V, I OUT =0.3A CC Mode Load, T A=22ºC
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
9
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EVB TEST RESULTS (continued)
Performance waveforms are tested on the evaluation board.
V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
10
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EVB TEST RESULTS (continued)
Performance waveforms are tested on the evaluation board.
V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
11
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
EVB TEST RESULTS (continued)
Performance waveforms are tested on the evaluation board.
V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
12
EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
QUICK START GUIDE
1. Preset Power Supply to 85VAC ≤ V IN ≤ 265VAC.
2. Turn Power Supply off.
3. Connect the Line and Neutral terminals of the power supply output to L and N port. For
three-wire input application, make OUTPUT GND connected to Earth.
4. Connect Different Load to Corresponding Outputs :
a. Positive (+): 12V OUT
b. Negative (–): GND
5. Turn Power Supply on after making connections.
Contact Information
To request this evaluation board, please refer to your local sales offices which can be found from:
http://www.monolithicpower.com/Company/Contact-Us
Disclaimer
Monolithic Power Systems (MPS) reserves the right to make changes to its products and to discontinue
products without notice. The applications information, schematic diagrams, and other reference
information included herein is provided as a design aid only and are therefore provided as-is. MPS
makes no warranties with respect to this information and disclaims any implied warranties of
merchantability or non-infringement of third-party intellectual property rights.
MPS cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a
MPS product. No circuit patent licenses are implied.
Certain applications using semiconductor products may involve potential risks of death, personal injury,
or severe property or environmental damage (“Critical Applications”).
MPS PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE
SUITABLE FOR USE IN LIFE‑SUPPORT APPLICATIONS, DEVICES OR SYSTEMS, OR OTHER
CRITICALAPPLICATIONS.
Inclusion of MPS products in critical applications is understood to be fully at the risk of the customer.
Questions concerning potential risk applications should be directed to MPS.
MPS semiconductors are typically used in power supplies in which high voltages are present during
operation. High voltage safety precautions should be observed in design and operation to minimize the
chance of injury.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EV174-S-00A Rev.1.0
www.MonolithicPower.com
3/31/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2015 MPS. All Rights Reserved.
13