True Digital PWM Controller
(Single-Phase, Single-Rail)
ZSPM1035A
Datasheet
Brief Description
The ZSPM1035A is a flexible true-digital single-
phase PWM controller optimally configured for use
with the Murata Power Solutions 35A Power Block
OKLP-X/35-W12-C in smart digital power solutions.
The ZSPM1035A integrates a digital control loop,
optimized for maximum flexibility and stability, as
well as load step and steady-state performance. In
addition, a rich set of protection and monitoring func-
tions is provided. On-chip, non-volatile memory
2
*
interface
facilitate
(NVM)
and
an
I C
™
configuration
.
IDT’s PC-based Pink Power Designer™ graphic
user interface (GUI) provides a user-friendly and
easy-to-use interface to the ZSPM1035A for com-
munication, monitoring, and configuration of the pro-
tection and sequencing features.
A downloadable reference solution is available,
including a graphical user interface, layout guide-
lines, bill of materials, and step-by-step instructions.
Benefits
•
•
•
•
•
•
•
Fast time-to-market using off-the-shelf, optimally
configured controller and power block
Fast configurability and design flexibility
Simplified design flow and high reliability via
proven system design solution
Reduced component count through system level
integration
Simplified monitoring for system power and
thermal management
Pin-to-pin compatible with the ZSPM1035C and
ZSPM1035D PWM controllers enabling point-of-
load platform designs with or without digital
communication
Higher energy efficiency across all output loading
conditions
Available Support
•
•
•
Features
•
•
Evaluation Kit
Reference Solution
PC-based Pink Power Designer™ GUI
•
•
•
•
•
Programmable digital control loop
Advanced digital control techniques
•
Tru-sample Technology™
•
State-Law Control™ (SLC)
•
Sub-cycle Response™ (SCR)
Improved transient response and noise immunity
Protection features
•
Over-current protection
•
Over-voltage protection (VIN, VOUT)
•
Under-voltage protection (VIN, VOUT)
•
Overloaded startup
•
Continuous retry (“hiccup”) mode for fault
conditions
Fuse-based NVM for improved reliability
Operation from a single 5V or 3.3V supply
Optional PMBus™ address selection without
external resistors
Physical Characteristics
•
•
•
Operation temperature: -40°C to +125°C
V
OUT
: 0.35V to 3.6V
Lead free (RoHS compliant) 24-pin QFN package
(4mm x 4mm)
ZSPM1035A Typical Application Diagram
ZSPM1035
QFN 4x4 mm
Current Sensing
Digital Control Loop
Murata
OKLP-X/35-W12-C
V
IN
12V typical
Power Management
(Sequencing, Protection,…)
Driver
Driver
V
OUT
Housekeeping
and
Communication
* I C™ is a registered trademark of NXP.
2
© 2016 Integrated Device Technology, Inc.
1
January 27, 2016
True Digital PWM Controller
(Single-Phase, Single-Rail)
ZSPM1035A
Datasheet
ZSPM1035A Block Diagram
ISNSP
ISNSN
Current Sensing
Average Current
Sensing
Current
Limiting
Digital Control Loop
VFBP
VFBN
VFB
FLASH
ADC
DAC
OC Detection
Sequencer
OV Detection
DAC
OT Detection
Vin OV/UV
Detection
Int. Temp
Sense
Vout UV Detection
VREF
1.8V Reg
Analog
HKADC
CPU Core
NVM
(OTP)
1.8V Reg
Digital
GPIO
SMBus
Configurable
Error Handler
Adaptive Digital
Controller
PWM
PWM
LSE
Typical Applications
Telecom Switches
Servers and Storage
Base Stations
TEMP
Bias
Current
Source
VREFP
AVDD18
Network Routers
Industrial Applications
Single-Rail/Single-Phase
Supplies for Processors,
ASICs, FPGAs, DSPs
ADDR0
ADDR1
VIN
VDD18
Clock
Generation
3.3V
Reg
VDD33
CONTROL
ADCVREF
Ordering Information
Sales Code
Description
Package
Reel
Kit
ZSPM1035AA1W 1
ZSPM1035A Lead-free QFN24 — Temperature range: -40°C to +125°C *
ZSPM8035-KIT
Evaluation Kit for ZSPM1035A with PMBus™ Communication Interface — Pink Power Designer™ GUI
for kit can be downloaded from the IDT web site at
www.IDT.com/ZSPM1035A
* This product is sold under a limited license from PowerOne, Inc. related to digital power technology as set forth in U.S. Patent 7000125 and other related
patents owned by PowerOne, Inc. This license does not extend to stand-alone power supply products.
Corporate Headquarters
6024 Silver Creek Valley Road
San Jose, CA 95138
www.IDT.com
Sales
SMBALERT
PGOOD
1-800-345-7015 or 408-284-8200
Fax: 408-284-2775
www.IDT.com/go/sales
Tech Support
www.IDT.com/go/support
DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance
specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The
information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an
implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property
rights of IDT or any third parties.
IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be
reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.
Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the
property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit
www.idt.com/go/glossary.
All contents of this document are copyright of Integrated
Device Technology, Inc. All rights reserved.
© 2016 Integrated Device Technology, Inc.
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January 27, 2016
VDD50
GPIO0
SDA
SCL
ZSPM1035A Datasheet
Contents
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 .................................................................................................................................... 15
3.1. Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 15
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 ......................................................................................................................... 16
3.3.4. Power Sequencing and the CONTROL Pin ...................................................................................... 16
3.3.5. Pre-biased Start-up and Soft Stop .................................................................................................... 17
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 and Limiting ............................................................................................ 20
3.4.3. Over-Temperature Protection ........................................................................................................... 20
3.5. Configuration ........................................................................................................................................... 20
4 PMBus™ Functionality ................................................................................................................................... 21
4.1. Introduction .............................................................................................................................................. 21
4.2. Timing and Bus Specification .................................................................................................................. 21
4.3. Address Selection via External Resistors ................................................................................................ 22
4.4. Configuration Registers ........................................................................................................................... 23
4.5. Monitoring ................................................................................................................................................ 25
4.6. Additional Registers ................................................................................................................................. 25
4.7. Detailed Description of the Supported PMBus™ Commands ................................................................. 26
4.7.1. OPERATION ..................................................................................................................................... 26
4.7.2. ON_OFF_CONFIG............................................................................................................................ 26
4.7.3. CLEAR_FAULTS .............................................................................................................................. 26
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ZSPM1035A Datasheet
4.7.4. VOUT_MODE ................................................................................................................................... 27
4.7.5. VOUT_COMMAND ........................................................................................................................... 27
4.7.6. STATUS_BYTE................................................................................................................................. 27
4.7.7. STATUS_WORD............................................................................................................................... 28
4.7.8. STATUS_VOUT ................................................................................................................................ 28
4.7.9. STATUS_IOUT ................................................................................................................................. 29
4.7.10. STATUS_INPUT ............................................................................................................................... 29
4.7.11. STATUS_TEMPERATURE............................................................................................................... 29
4.7.12. STATUS_CML .................................................................................................................................. 30
4.7.13. STATUS_MFR_SPECIFIC ............................................................................................................... 30
4.7.14. READ_VIN ........................................................................................................................................ 30
4.7.15. READ_VOUT .................................................................................................................................... 30
4.7.16. READ_IOUT...................................................................................................................................... 31
4.7.17. READ_TEMPERATURE1 ................................................................................................................. 31
4.7.18. READ_TEMPERATURE2 ................................................................................................................. 31
5 Application Information ................................................................................................................................... 32
5.1. Typical Application Circuit ....................................................................................................................... 32
5.1.1. Output Voltage Selection .................................................................................................................. 34
5.1.2. Output Capacitor Selection ............................................................................................................... 34
5.2. Typical Performance Measurements for the ZSPM1035A ...................................................................... 34
5.2.1. Typical Load Transient Response – Capacitor Range #1 – VOUT Range #1 ................................. 35
5.2.2. Typical Load Transient Response – Capacitor Range #2 – VOUT Range #1 ................................. 36
5.2.3. Typical Load Transient Response – Capacitor Range #3 – VOUT Range #1 ................................. 37
5.2.4. Typical Load Transient Response – Capacitor Range #4 – VOUT Range #1 ................................. 38
5.2.5. Typical Load Transient Response – Capacitor Range #1 – VOUT Range #2 ................................. 39
5.2.6. Typical Load Transient Response – Capacitor Range #2 – VOUT Range #2 ................................. 40
5.2.7. Typical Load Transient Response – Capacitor Range #3 – VOUT Range #2 ................................. 41
5.2.8. Typical Load Transient Response – Capacitor Range #4 – VOUT Range #2 ................................. 42
6 Mechanical Specifications .............................................................................................................................. 43
7 Ordering Information ...................................................................................................................................... 44
8 Related Documents ........................................................................................................................................ 44
9 Glossary ......................................................................................................................................................... 44
10 Document Revision History ............................................................................................................................ 45
© 2016 Integrated Device Technology, Inc.
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January 27, 2016
ZSPM1035A Datasheet
List of Figures
Figure 2.1
Figure 2.2
Figure 2.3
Figure 3.1
Figure 3.2
Figure 3.3
Figure 3.4
Figure 4.1
Figure 5.1
Figure 5.2
Figure 5.3
Figure 5.4
Figure 5.5
Figure 5.6
Figure 5.7
Figure 5.8
Figure 5.9
Figure 5.10
Figure 5.11
Figure 5.12
Figure 5.13
Figure 5.14
Figure 5.15
Figure 5.16
Figure 5.17
Figure 5.18
Figure 5.19
Figure 5.20
Figure 5.21
Figure 5.22
Figure 5.23
Figure 5.24
Figure 5.25
Figure 5.26
Figure 5.27
Figure 5.28
Figure 5.29
Typical Application Circuit with a 5V Supply Voltage ....................................................................... 11
Block Diagram................................................................................................................................... 12
Pin-Out QFN24 Package .................................................................................................................. 14
Simplified Block Diagram of the Digital Compensation .................................................................... 16
Power Sequencing ............................................................................................................................ 17
Power Sequencing with Non-zero Off Voltage ................................................................................. 17
Inductor Current Sensing Using the DCR Method............................................................................ 18
PMBus™ Timing Diagram ................................................................................................................ 21
Application Circuit with a 5V Supply Voltage .................................................................................... 32
VOUT Range #1 with Capacitor Range #1 – Load Step 5 to 15A, Min. Capacitance...................... 35
VOUT Range #1 with Capacitor Range #1 – Load Step 15 to 5A, Min. Capacitance...................... 35
VOUT Range #1 with Capacitor Range #1 – Load Step 5 to 15A, Max. Capacitance..................... 35
VOUT Range #1 with Capacitor Range #1 – Load Step 15 to 5A, Max. Capacitance..................... 35
Open Loop Bode Plots for VOUT Range #1 with Capacitor Range #1 ............................................ 35
VOUT Range #1 with Capacitor Range #2 – Load Step 5 to 15A, Min. Capacitance...................... 36
VOUT Range #1 with Capacitor Range #2 – Load Step 15 to 5A, Min. Capacitance...................... 36
VOUT Range #1 with Capacitor Range #2 – Load Step 5 to 15A, Max. Capacitance..................... 36
VOUT Range #1 with Capacitor Range #2 – Load Step 15 to 5A, Min. Capacitance...................... 36
Open Loop Bode Plots for VOUT Range #1 with Capacitor Range #2 ............................................ 36
VOUT Range #1 with Capacitor Range #3 – Load Step 5 to 15A, Min. Capacitance...................... 37
VOUT Range #1 with Capacitor Range #3 – Load Step 15 to 5A, Min. Capacitance...................... 37
VOUT Range #1 with Capacitor Range #3 – Load Step 5 to 15A, Max. Capacitance..................... 37
VOUT Range #1 with Capacitor Range #3 – Load Step 15 to 5A, Max. Capacitance..................... 37
Open Loop Bode Plots for VOUT Range #1 with Capacitor Range #3 ............................................ 37
VOUT Range #1 with Capacitor Range #4 – Load Step 5 to 15A, Min. Capacitance...................... 38
VOUT Range #1 with Capacitor Range #4 – Load Step 15 to 5A, Min. Capacitance...................... 38
VOUT Range #1 with Capacitor Range #4 – Load Step 5 to 15A, Max. Capacitance..................... 38
VOUT Range #1 with Capacitor Range #4 – Load Step 15 to 5A, Max. Capacitance..................... 38
Open Loop Bode Plots for VOUT Range #1 with Capacitor Range #4 ............................................ 38
VOUT Range #2 with Capacitor Range #1 – Load Step 5 to 15A, Min. Capacitance...................... 39
VOUT Range #2 with Capacitor Range #1 – Load Step 15 to 5A, Min. Capacitance...................... 39
VOUT Range #2 with Capacitor Range #1 – Load Step 5 to 15A, Max. Capacitance..................... 39
VOUT Range #2 with Capacitor Range #1 – Load Step 15 to 5A, Max. Capacitance..................... 39
Open Loop Bode Plots for VOUT Range #2 with Capacitor Range #1 ............................................ 39
VOUT Range #2 with Capacitor Range #2 – Load Step 5 to 15A, Min. Capacitance...................... 40
VOUT Range #2 with Capacitor Range #2 – Load Step 15 to 5A, Min. Capacitance...................... 40
VOUT Range #2 with Capacitor Range #2 – Load Step 5 to 15A, Max. Capacitance..................... 40
© 2016 Integrated Device Technology, Inc.
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January 27, 2016
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