ZSPM2000 Datasheet

© 2016 Integrated Device Technology, Inc.

3

January 27, 2016

Contents

1

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

1.1.

Absolute Maximum Ratings....................................................................................................................... 6

1.2.

Recommended Operating Conditions ....................................................................................................... 7

1.3.

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

2

Product Summary........................................................................................................................................... 11

2.1.

Overview.................................................................................................................................................. 11

2.2.

Pin Description......................................................................................................................................... 14

2.3.

Available Packages ................................................................................................................................. 15

3

Functional Description.................................................................................................................................... 16

3.1.

Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 16

3.2.

Reset/Start-up Behavior .......................................................................................................................... 16

3.3.

Digital Power Control ............................................................................................................................... 16

3.3.1.

Overview ........................................................................................................................................... 16

3.3.2.

Switching Frequency......................................................................................................................... 16

3.3.3.

Output Voltage Feedback ................................................................................................................. 17

3.3.4.

Digital Compensator.......................................................................................................................... 17

3.3.5.

Power Sequencing and the CONTROL Pin ...................................................................................... 18

3.3.6.

Pre-biased Start-up and Soft Stop .................................................................................................... 19

3.3.7.

Current Sensing ................................................................................................................................ 19

3.3.8.

Temperature Measurement .............................................................................................................. 20

3.4.

Fault Monitoring and Response Generation............................................................................................ 21

3.4.1.

Output Over/Under-Voltage .............................................................................................................. 22

3.4.2.

Output Current Protection and Limiting............................................................................................. 22

3.4.3.

Over-Temperature Protection ........................................................................................................... 22

3.5.

GPIO0 Pin Configuration ......................................................................................................................... 23

3.6.

Configuration ........................................................................................................................................... 23

4

PMBus™ Functionality ................................................................................................................................... 24

4.1.

Introduction .............................................................................................................................................. 24

4.2.

Timing and Bus Specification .................................................................................................................. 24

4.3.

Address Selection via External Resistors................................................................................................ 25

4.4.

Configuration Registers ........................................................................................................................... 26

4.5.

Monitoring ................................................................................................................................................ 28

4.6.

Miscellaneous .......................................................................................................................................... 28

4.7.

Detailed Description of the Supported PMBus™ Commands................................................................. 29

4.7.1.

OPERATION Command ................................................................................................................... 29

4.7.2.

ON_OFF_CONFIG Command .......................................................................................................... 29

4.7.3.

CLEAR_FAULTS Command............................................................................................................. 29

4.7.4.

VOUT_MODE Command.................................................................................................................. 30