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ZSPM1035DA1W0: DescriptionTrue Digital PWM Controller (Single-Phase, Single-Rail); File Size3MB，41 Pages; ManufacturerETC2

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True Digital PWM Controller (Single-Phase, Single-Rail)

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Data Sheet

Rev. 1.00 / December 2013

ZSPM1035C / ZSPM1035D

True Digital PWM Controller (Single-Phase, Single-Rail)

Smart Power Management ICs

Power and Precision

ZSPM1035C / ZSPM1035D

True Digital PWM Controller (Single-Phase, Single-Rail)

Contents

Features ................................................................................................................................................................... 2

Benefits .................................................................................................................................................................... 2

List of Figures .......................................................................................................................................................... 5

List of Tables ........................................................................................................................................................... 6

1 IC Characteristics ............................................................................................................................................. 7

1.1. Absolute Maximum Ratings ....................................................................................................................... 7

1.2. Recommended Operating Conditions ....................................................................................................... 8

1.3. Electrical Parameters ................................................................................................................................ 8

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

2.1. Overview .................................................................................................................................................. 11

2.2. Pin Description......................................................................................................................................... 13

2.3. Available Packages ................................................................................................................................. 14

3 Functional Description .................................................................................................................................... 14

3.1. Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 14

3.2. Reset/Start-up Behavior .......................................................................................................................... 15

3.3. Digital Power Control ............................................................................................................................... 15

3.3.1. Overview ........................................................................................................................................... 15

3.3.2. Output Voltage Feedback ................................................................................................................. 15

3.3.3. Digital Compensator ......................................................................................................................... 15

3.3.4. Power Sequencing and the CONTROL Pin ...................................................................................... 16

3.3.5. Pre-biased Start-up and Soft-Off ...................................................................................................... 18

3.3.6. Current Sensing ................................................................................................................................ 18

3.3.7. Temperature Measurement .............................................................................................................. 19

3.4. Fault Monitoring and Response Generation ............................................................................................ 19

3.4.1. Output Over/Under Voltage .............................................................................................................. 19

3.4.2. Output Current Protection ................................................................................................................. 20

3.4.3. Over-Temperature Protection ........................................................................................................... 20

3.5. Monitoring and Debugging via I C™ ....................................................................................................... 20

4 Application Information ................................................................................................................................... 21

4.1. Typical Application Circuit ....................................................................................................................... 21

4.2. Pin Strap Options of the ZSPM1035C/D ................................................................................................. 24

4.2.1. CONFIG0 – Output Voltage .............................................................................................................. 24

4.2.2. CONFIG1 – Compensation Loop and Output Voltage Slew Rate .................................................... 25

4.3. Typical Performance Measurements for the ZSPM1035C and ZSPM1035D ......................................... 28

4.3.1. Typical Load Transient Response – ZSPM1035C – Capacitor Range #1 – Comp0........................ 29

4.3.2. Typical Load Transient Response – ZSPM1035C – Capacitor Range #2 – Comp1........................ 30

4.3.3. Typical Load Transient Response – ZSPM1035C – Capacitor Range #3 – Comp2........................ 31

4.3.4. Typical Load Transient Response – ZSPM1035C – Capacitor Range #4 – Comp3........................ 32

4.3.5. Typical Load Transient Response – ZSPM1035D – Capacitor Range #1 – Comp0........................ 33

4.3.6. Typical Load Transient Response – ZSPM1035D – Capacitor Range #2 – Comp1........................ 34

Data Sheet

December 3, 2013

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

4 of 40

ZSPM1035C / ZSPM1035D

True Digital PWM Controller (Single-Phase, Single-Rail)

4.3.7. Typical Load Transient Response – ZSPM1035D – Capacitor Range #3 – Comp2........................ 35

4.3.8. Typical Load Transient Response – ZSPM1035D – Capacitor Range #4 – Comp3........................ 36

Mechanical Specifications .............................................................................................................................. 38

Glossary ......................................................................................................................................................... 39

Ordering Information ...................................................................................................................................... 39

Related Documents ........................................................................................................................................ 40

Document Revision History ............................................................................................................................ 40

List of Figures

Figure 2.1

Figure 2.2

Figure 2.3

Figure 3.1

Figure 3.2

Figure 3.3

Figure 4.1

Figure 4.2

Figure 4.3

Figure 4.4

Figure 4.5

Figure 4.6

Figure 4.7

Figure 4.8

Figure 4.9

Figure 4.10

Figure 4.11

Figure 4.12

Figure 4.13

Figure 4.14

Figure 4.15

Figure 4.16

Figure 4.17

Figure 4.18

Figure 4.19

Figure 4.20

Figure 4.21

Figure 4.22

Figure 4.23

Figure 4.24

Figure 4.25

Figure 4.26

Data Sheet

Typical Application Circuit with a 5V Supply Voltage ....................................................................... 11

Block Diagram................................................................................................................................... 12

Pin-Out QFN24 Package .................................................................................................................. 14

Simplified Block Diagram for the Digital Compensation ................................................................... 16

Power Sequencing ............................................................................................................................ 17

Inductor Current Sensing Using the DCR Method............................................................................ 18

ZSPM1035C – Application Circuit with a 5V Supply Voltage ........................................................... 21

ZSPM1035D – Application Circuit with a 5V Supply Voltage ........................................................... 22

ZSPM1035C with Capacitor Range #1 – Load Step 5 to 15A, Min. Capacitance............................ 29

ZSPM1035C with Capacitor Range #1 – Load Step 15 to 5A, Min. Capacitance............................ 29

ZSPM1035C with Capacitor Range #1 – Load Step 5 to 15A, Max. Capacitance........................... 29

ZSPM1035C with Capacitor Range #1 – Load Step 15 to 5A, Max. Capacitance........................... 29

ZSPM1035C Open Loop Bode Plots with Capacitor Range #1 ....................................................... 29

ZSPM1035C with Capacitor Range #2 – Load Step 5 to 15A, Min. Capacitance............................ 30

ZSPM1035C with Capacitor Range #2 – Load Step 15 to 5A, Min. Capacitance............................ 30

ZSPM1035C with Capacitor Range #2 – Load Step 5 to 15A, Max. Capacitance........................... 30

ZSPM1035C with Capacitor Range #2 – Load Step 15 to 5A, Max. Capacitance........................... 30

ZSPM1035C Open Loop Bode Plots with Capacitor Range #2 ....................................................... 30

ZSPM1035C with Capacitor Range #3 – Load Step 5 to 15A, Min. Capacitance............................ 31

ZSPM1035C with Capacitor Range #3 – Load Step 15 to 5A, Min. Capacitance............................ 31

ZSPM1035C with Capacitor Range #3 – Load Step 5 to 15A, Max. Capacitance........................... 31

ZSPM1035C with Capacitor Range #3 – Load Step 15 to 5A, Max. Capacitance........................... 31

ZSPM1035C Open Loop Bode Plots with Capacitor Range #3 ....................................................... 31

ZSPM1035C with Capacitor Range #4 – Load Step 5 to 15A, Min. Capacitance............................ 32

ZSPM1035C with Capacitor Range #4 – Load Step 15 to 5A, Min. Capacitance............................ 32

ZSPM1035C with Capacitor Range #4 – Load Step 5 to 15A, Max. Capacitance........................... 32

ZSPM1035C with Capacitor Range #4 – Load Step 15 to 5A, Max. Capacitance........................... 32

ZSPM1035C Open Loop Bode Plots with Capacitor Range #4 ....................................................... 32

ZSPM1035D with Capacitor Range #1 – Load Step 5 to 15A, Min. Capacitance............................ 33

ZSPM1035D with Capacitor Range #1 – Load Step 15 to 5A, Min. Capacitance............................ 33

ZSPM1035D with Capacitor Range #1 – Load Step 5 to 15A, Max. Capacitance........................... 33

ZSPM1035D with Capacitor Range #1 – Load Step 15 to 5A, Max. Capacitance........................... 33

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

December 3, 2013

5 of 40

ZSPM1035DA1W0 Related Products

	ZSPM1035DA1W0	ZSPM1035C	ZSPM1035CA1W0	ZSPM1035D	ZSPM8735-KIT	ZSPM8835-KIT
Description	True Digital PWM Controller (Single-Phase, Single-Rail)	True Digital PWM Controller (Single-Phase, Single-Rail)	True Digital PWM Controller (Single-Phase, Single-Rail)	True Digital PWM Controller (Single-Phase, Single-Rail)	True Digital PWM Controller (Single-Phase, Single-Rail)	True Digital PWM Controller (Single-Phase, Single-Rail)

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