ZSLS7031

Isolated and Non-isolated Flyback LED Driver with Active PFC

Data Sheet

May 7, 2013

© 2013 Zentrum Mikroelektronik Dresden AG

— Rev.1.00

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without

the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

4 of 21

Contents

1

IC Characteristics .......................................................................................................................................................... 6

1.1

Absolute Maximum/Minimum Ratings.................................................................................................................... 6

1.2

Operating Conditions ............................................................................................................................................. 6

1.3

Electrical Parameters............................................................................................................................................. 7

1.4

Typical Performance Characteristics Graphs......................................................................................................... 8

2

Circuit Description ....................................................................................................................................................... 10

2.1

ZSLS7031 Overview ............................................................................................................................................ 10

2.2

Startup Voltage .................................................................................................................................................... 10

2.3

Soft Start Control ................................................................................................................................................. 10

2.4

Gate Output Voltage Clamp................................................................................................................................. 11

2.5

VSINE Detection Network and Active PFC............................................................................................................. 11

2.6

Operating Frequency ........................................................................................................................................... 12

2.7

Output Over-Voltage Protection ........................................................................................................................... 13

2.8

Output Over-Current Protection (OCP) ................................................................................................................ 13

2.9

Under-Voltage Lock Out (UVLO) ......................................................................................................................... 13

3

Application Circuit Design ........................................................................................................................................... 14

3.1

Typical Applications ............................................................................................................................................. 14

3.2

Line Regulation Compensation Design................................................................................................................ 14

3.3

Transformer Design ............................................................................................................................................. 14

3.4

Printed Circuit Board (PCB) Design Considerations ............................................................................................ 17

4

ESD Protection............................................................................................................................................................ 19

5

Pin Configuration and Package ................................................................................................................................... 19

6

Glossary ...................................................................................................................................................................... 20

7

Ordering Information ................................................................................................................................................... 21

8

Document Revision History ......................................................................................................................................... 21

List of Figures

Figure 1.1

VIN vs. PF (Output: VOUT=40V, IOUT=0.45A) .................................................................................................... 8

Figure 1.2

VIN vs. IOUT (Output: target IOUT=0.45A, VOUT=40V, without line compensation circuit) ................................... 8

Figure 1.3

VIN vs. Efficiency (Output: VOUT=40V, IOUT=0.45A) ......................................................................................... 8

Figure 1.4

VIN vs. IOUT (Output: target IOUT=0.45A, VOUT=40V, with line compensation circuit) ........................................ 8

Figure 1.5

THD of VIN=110V (Output: VOUT=40V, IOUT=0.45A) ........................................................................................ 9

Figure 1.6

THD of VIN=230V (Output: VOUT=40V, IOUT=0.45A) ........................................................................................ 9

Figure 2.1

ZSLS7031 Block Diagram ............................................................................................................................ 10

Figure 2.2

ZSLS7031 Soft Start .................................................................................................................................... 11