of the CS1501 digital PFC controller with a 90 watt out-
put at a link voltage of 400 volts.
AC Line
Input
Regulated
DC Output
Actual Size:
254mm x 44mm
Copyright
Cirrus Logic, Inc. 2011
(All Rights Reserved)
www.cirrus.com
MAR ‘11
DS927DB3
CDB150x-01
IMPORTANT SAFETY INSTRUCTIONS
Read and follow all safety instructions prior to using this demonstration board.
This Engineering Evaluation Unit or Demonstration Board must only be used for assessing IC performance in a
laboratory setting. This product is not intended for any other use or incorporation into products for sale.
This product must only be used by qualified technicians or professionals who are trained in the safety procedures
associated with the use of demonstration boards.
Risk of Electric Shock
•
•
The direct connection to the AC power line and the open and unprotected boards present a serious risk of electric
shock and can cause serious injury or death. Extreme caution needs to be exercised while handling this board.
Avoid contact with the exposed conductor or terminals of components on the board. High voltage is present on
exposed conductor and it may be present on terminals of any components directly or indirectly connected to the AC
line.
Dangerous voltages and/or currents may be internally generated and accessible at various points across the board.
Charged capacitors store high voltage, even after the circuit has been disconnected from the AC line.
Make sure that the power source is off before wiring any connection. Make sure that all connectors are well
connected before the power source is on.
Follow all laboratory safety procedures established by your employer and relevant safety regulations and guidelines,
such as the ones listed under, OSHA General Industry Regulations - Subpart S and NFPA 70E.
•
•
•
•
Suitable eye protection must be worn when working with or around demonstration boards. Always
comply with your employer’s policies regarding the use of personal protective equipment.
All components, heat sinks or metallic parts may be extremely hot to touch when electrically active.
Heatsinking is required for Q1. The end product should use tar pitch or an equivalent compound for this
purpose. For lab evaluation purposes, a fan is recommended to provide adequate cooling.
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you
go to
www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives
consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This con-
sent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-
ERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR
USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK
AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANT-
ABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER
OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE,
TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, IN-
CLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks
or service marks of their respective owners.
2
DS927DB3
CDB150x-01
1. INTRODUCTION
The CS1501 is a high-performance Variable Frequency Discontinuous Conduction Mode (VF-DCM), ac-
tive Power Factor Correction (PFC) controller, optimized to deliver the lowest system cost in switched
mode power supply (SMPS) applications. The CS1501 uses a digital control algorithm that is optimized
for high efficiency and near-unity power factor over a wide input voltage range (90-265 VAC).
Using an adaptive digital control algorithm, both the ON time and the switching frequency are varied on a
cycle-by-cycle basis over the entire AC line to achieve close-to-unity power factor. The feedback loop is
closed through an integrated digital control system within the IC.
The variation in switching frequency also provides a spread-frequency spectrum, thus minimizing the con-
ducted EMI filtering requirements. Burst mode control minimizes the light-load/standby losses. Protection
features such as overvoltage, overcurrent, overpower, open circuit, overtemperature, and brownout help
protect the device during abnormal transient conditions. Details of these features are provided in the
CS1501 data sheets.
The CDB150x-01 board demonstrates the performance of the CS1501 with input voltage range of 90-265
VAC, typically seen in universal input applications. This board has been designed for 400V V
link
, 90
Watts, full load.
Extreme caution needs to be exercised while handling this board. This board is to be used by trained pro-
fessionals only. Prior to applying AC power to the CDB150x-01 board, the CS1501 needs to be biased
using an external 13 VDC power supply.
This document provides the schematic for the board. It includes oscilloscope screen shots that indicate
operating waveforms. Graphs are also provided that document the performance of the board in terms of
Efficiency vs. Load, Total Harmonic Distortion vs. Load, and Power Factor vs. Load for the CS1501 PFC
controller IC.
DS927DB3
3
1
3
4
C3
0.22uF
C4
0.22uF
NO POP
C6
0.33uF
R3
1M
-
C5
C2
2200pF
R8
20K
+
t
NTC1
30
NO POP - SHORT WITH 28 AWG WIRE
IND-5MH-TSD-2796
IND-5MH-TSD-2796
JP1
0.800" WIRE JUMPER
4
ECO#
INC BY/DATE
CHK BY/DATE
REV
DESCRIPTION
A
INITIAL RELEASE
9/17/10
12/9/10
01/05/11
9/17/10
CHANGED L5 TO NEW FOOTPRINT
CHANGED R6 FROM 17.8K TO 48.7K
ECO806
ECO819
TP2
D1
B
B1
MUR160
TP6
TP3
A1
A2
1PAD-H78P108 1PAD-H78P108
380uH
L5
RLCS-1007
D2
MUR460G
600V
30
NO POP, SHORT WITH AWG28 WIRE
NTC2
t
TP4
CON2
TERM BLK
1
2
2. SCHEMATIC
F1
4A
L3
L2
5mH
NO POP, SHORT WITH AWG28 WIRE
TP5
R12
0
G
S
L4
D
R1
1M
Q1
STP12NM50FP
HS1
12.5W
NO POP, SHORT PIN 1-2 & PIN 3-4 with 28 AWG wire
CON1
TERM BLK
C1
2200pF
R2
1M
L1
5mH
BR1
GBU4J-BP
600V
C7
ELEC
100uF
2
1
2
V300LA20AP
300V
VZ
3
D3
LL4148
R9
0.1
R7
4.7 OHM 1W
R10
NO POP
R13
1M
R4
R5
NO POP
NO POP
R14
1M
R6
48.7K
R11
1K
R15
1M
Option1 @ U2=CS1500:
1. No populated IC: U1
2. No populated capacitors: C5, C8, C9, C11
3. No populated resistors: R4,R6,R10,R17,R18,R21,R22
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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