ZSLS7031 Datasheet

© 2016 Integrated Device Technology, Inc.

3

January 26, 2016

Contents

1

IC Characteristics .......................................................................................................................................................... 5

1.1

Absolute Maximum/Minimum Ratings.................................................................................................................... 5

1.2

Operating Conditions ............................................................................................................................................. 5

1.3

Electrical Parameters............................................................................................................................................. 6

1.4

Typical Performance Characteristics Graphs......................................................................................................... 7

2

Circuit Description ......................................................................................................................................................... 9

2.1

ZSLS7031 Overview .............................................................................................................................................. 9

2.2

Startup Voltage ...................................................................................................................................................... 9

2.3

Soft Start Control ................................................................................................................................................... 9

2.4

Gate Output Voltage Clamp................................................................................................................................. 10

2.5

VSINE Detection Network and Active PFC............................................................................................................. 10

2.6

Operating Frequency ........................................................................................................................................... 11

2.7

Output Over-Voltage Protection........................................................................................................................... 12

2.8

Output Over-Current Protection (OCP) ................................................................................................................ 12

2.9

Under-Voltage Lock Out (UVLO) ......................................................................................................................... 12

3

Application Circuit Design ........................................................................................................................................... 13

3.1

Typical Applications ............................................................................................................................................. 13

3.2

Line Regulation Compensation Design................................................................................................................ 13

3.3

Transformer Design ............................................................................................................................................. 13

3.4

Printed Circuit Board (PCB) Design Considerations ............................................................................................ 16

4

ESD Protection............................................................................................................................................................ 18

5

Pin Configuration and Package ................................................................................................................................... 18

6

Glossary ...................................................................................................................................................................... 19

7

Ordering Information ................................................................................................................................................... 20

8

Document Revision History ......................................................................................................................................... 20

List of Figures

Figure 1.1

VIN vs. PF (Output: VOUT=40V, IOUT=0.45A) .................................................................................................... 7

Figure 1.2

VIN vs. IOUT (Output: target IOUT=0.45A, VOUT=40V, without line compensation circuit) ................................... 7

Figure 1.3

VIN vs. Efficiency (Output: VOUT=40V, IOUT=0.45A) ......................................................................................... 7

Figure 1.4

VIN vs. IOUT (Output: target IOUT=0.45A, VOUT=40V, with line compensation circuit) ........................................ 7

Figure 1.5

THD of VIN=110V (Output: VOUT=40V, IOUT=0.45A) ........................................................................................ 8

Figure 1.6

THD of VIN=230V (Output: VOUT=40V, IOUT=0.45A) ........................................................................................ 8

Figure 2.1

ZSLS7031 Block Diagram .............................................................................................................................. 9

Figure 2.2

ZSLS7031 Soft Start .................................................................................................................................... 10

Figure 2.3

Active PFC ................................................................................................................................................... 11

Figure 2.4

Output Over-Voltage Protection ................................................................................................................... 12

Figure 2.5

Under-Voltage Lock Out ............................................................................................................................... 13