True-Digital PWM Controller
(Single-Phase, Single-Rail)
ZSPM15xx
Datasheet
Brief Description
ZSPM15xx family ICs are controllers designed for
high-current, non-isolated DC/DC step-down point of
load (POL) converters. The ZSPM15xx has a digital
control loop that is optimized for maximum stability
as well as load step and steady-state performance.
ZSPM15xx family ICs have a rich set of integrated
fault protection features including over-voltage/
under-voltage, output over-current, and over-temper-
ature protections. To facilitate ease of use, the
ZSPM15xx is pre-programmed and available for
common output voltages. To provide flexibility for the
end-customer, the over-current protection threshold
and the control loop compensation are selectable by
the end-customer to match a number of selected
power stages.
ZSPM15xx family ICs have been optimized for max-
imum efficiency when used with IDT’s DrMOS
devices. Reference designs and application instruc-
tions enable a high performance turnkey solution
without extensive engineering development.
Benefits
•
•
•
•
•
•
Factory pre-configured for industry standard
output voltages and currents enabling fast
time-to-market
Simplified design and integration
FPGA designer-friendly solution
Highest power density with smallest footprint
Higher energy efficiency across all output loading
conditions
Operation from a single 5V supply
Available Support
•
•
Reference designs
Evaluation kits
Physical Characteristics
•
•
•
•
•
Features
•
Advanced digital control techniques
•
Tru-sample Technology™
•
State-Law Control™ (SLC)
•
Preconfigured compensation for selected
inductance values.
•
Improved transient response and noise immunity
•
Protection features
•
Configuration for over-current protection
•
Over-voltage protection (VIN, VOUT)
•
Under-voltage protection (VIN, VOUT)
•
Over-temperature protection
•
Overloaded startup
•
Restart and delay
Operation temperature: -40°C to +125°C
V
IN
for POL application:10.8V to 13.2V
VDD50 voltage supply: 4.75 to 5.25V
Available Output Voltages: 0.85V, 1.0V, 1.2V,
1.5V, 1.8V, 2.0V, 2.5V, 3.3V, and 5.0V
Lead free (RoHS compliant) 24-pin QFN package
(4mm x 4mm)
ZSPM15xx Typical Application Diagram
ZSPM15xx
QFN 4x4 mm
Current Sensing
Digital Control Loop
ZSPM90xx
PQFN 6x6 mm
Power Management
(Sequencing, Protection,…)
Driver
Driver
Housekeeping
and
Communication
© 2016 Integrated Device Technology, Inc.
1
January 27, 2016
True-Digital PWM Controller
(Single-Phase, Single-Rail)
ZSPM15xx
Datasheet
Current Sensing
ISNSP
ISNSN
Average Current
Sensing
Current
Limiting
ZSPM15xx Block Diagram
VFBP
VFBN
Digital Control Loop
VFB
FLASH
ADC
DAC
OC Detection
Sequencer
OV Detection
Adaptive Digital
Controller
PWM
DRVEN
PWM
Typical Applications
DAC
Telecom Switches
Servers and Storage
Base Stations
Network Routers
TEMP
OT Detection
Vin OV/UV
Detection
Int. Temp
Sense
Vout UV Detection
Configurable
Error Handler
Bias
Current
Source
VREF
1.8V Reg
Analog
VREFP
AVDD18
Industrial Applications
Single-Rail/Single-Phase
Supplies for Processors,
ASICs, FPGAs, DSPs
CONFIG0
CONFIG1
VIN
HKADC
CPU Core
NVM
(OTP)
1.8V Reg
Digital
VDD18
GPIO
Clock
Generation
3.3V
Reg
VDD33
CONTROL
ADCVREF
Ordering Information
Product Code
ZSPM1501ZA1W0
ZSPM1502ZA1W0
ZSPM1503ZA1W0
ZSPM1504ZA1W0
ZSPM1505ZA1W0
ZSPM1506ZA1W0
ZSPM1507ZA1W0
ZSPM1508ZA1W0
ZSPM1509ZA1W0
ZSPM1511ZA1W0
ZSPM1512ZA1W0
ZSPM1513ZA1W0
Description
ZSPM1501 lead-free QFN24; output voltage: 0.85V; inductance: 330nH; temperature: -40°C to +125°C
ZSPM1502 lead-free QFN24; output voltage: 1.00V; inductance: 330nH; temperature: -40°C to +125°C
ZSPM1503 lead-free QFN24; output voltage: 1.20V; inductance: 330nH; temperature: -40°C to +125°C
ZSPM1504 lead-free QFN24; output voltage: 1.50V; inductance: 470nH; temperature: -40°C to +125°C
ZSPM1505 lead-free QFN24; output voltage: 1.80V; inductance: 470nH; temperature: -40°C to +125°C
ZSPM1506 lead-free QFN24; output voltage: 2.00V; inductance: 470nH; temperature: -40°C to +125°C
ZSPM1507 lead-free QFN24; output voltage: 2.50V; inductance: 1000nH; temperature: -40°C to +125°C
ZSPM1508 lead-free QFN24; output voltage: 3.30V; inductance: 2200nH; temperature: -40°C to +125°C
ZSPM1509 lead-free QFN24; output voltage: 5.00V; inductance: 2200nH; temperature: -40°C to +125°C
ZSPM1511 lead-free QFN24; output voltage: 0.85V; inductance: 680nH; temperature: -40°C to +125°C
ZSPM1512 lead-free QFN24; output voltage: 1.00V; inductance: 680nH; temperature: -40°C to +125°C
ZSPM1513 lead-free QFN24; output voltage: 1.20V; inductance: 680nH; temperature: -40°C to +125°C
THSHDN
PGOOD
VDD50
Package
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Corporate Headquarters
6024 Silver Creek Valley Road
San Jose, CA 95138
www.IDT.com
Sales
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.
2
January 27, 2016
ZSPM15xx Datasheet
Contents
IC Characteristics ........................................................................................................................................... 14
1.1. Absolute Maximum Ratings ..................................................................................................................... 14
1.2. Recommended Operating Conditions ..................................................................................................... 15
1.3. Electrical Parameters .............................................................................................................................. 15
1.4. Device-Specific System Parameters ....................................................................................................... 18
1.4.1. ZSPM1501 ........................................................................................................................................ 18
1.4.2. ZSPM1502 ........................................................................................................................................ 18
1.4.3. ZSPM1503 ........................................................................................................................................ 19
1.4.4. ZSPM1504 ........................................................................................................................................ 20
1.4.5. ZSPM1505 ........................................................................................................................................ 20
1.4.6. ZSPM1506 ........................................................................................................................................ 21
1.4.7. ZSPM1507 ........................................................................................................................................ 22
1.4.8. ZSPM1508 ........................................................................................................................................ 22
1.4.9. ZSPM1509 ........................................................................................................................................ 23
1.4.10. ZSPM1511 ........................................................................................................................................ 23
1.4.11. ZSPM1512 ........................................................................................................................................ 24
1.4.12. ZSPM1513 ........................................................................................................................................ 24
2 Product Summary........................................................................................................................................... 25
2.1. Overview .................................................................................................................................................. 25
2.2. Pin Description......................................................................................................................................... 27
2.3. Available Packages ................................................................................................................................. 28
3 Functional Description .................................................................................................................................... 29
3.1. Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 29
3.2. Reset/Start-up Behavior .......................................................................................................................... 29
3.3. Digital Power Control ............................................................................................................................... 29
3.3.1. Overview ........................................................................................................................................... 29
3.3.2. Output Voltage Feedback ................................................................................................................. 29
3.3.3. Digital Compensator ......................................................................................................................... 30
3.3.4. Power Sequencing and the CONTROL Pin ...................................................................................... 31
3.4. Fault Monitoring and Response Generation ............................................................................................ 32
3.4.1. Output Over/Under-Voltage .............................................................................................................. 32
3.4.2. Output Current Protection ................................................................................................................. 32
3.4.3. Input Voltage Protection .................................................................................................................... 33
3.4.4. Over-Temperature Protection ........................................................................................................... 33
4 Application Information ................................................................................................................................... 34
4.1. Application Schematic ............................................................................................................................. 34
4.2. Device-Specific Passive Components ..................................................................................................... 36
4.3. Output Voltage Feedback Components .................................................................................................. 38
1
© 2016 Integrated Device Technology, Inc.
3
January 27, 2016
ZSPM15xx Datasheet
4.4. DCR Current Sensing Components ........................................................................................................ 38
4.5. Input Voltage Sensing ............................................................................................................................. 39
4.6. External Temperature Sensing ................................................................................................................ 39
4.7. CONFIG0 – Over-Current Protection Threshold ..................................................................................... 40
4.8. CONFIG1 – Compensation Loop and Output Voltage Slew Rate........................................................... 41
5 Typical Performance Data .............................................................................................................................. 46
5.1. ZSPM1501 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 47
5.2. ZSPM1501 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 48
5.3. ZSPM1501 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 49
5.4. ZSPM1501 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 50
5.5. ZSPM1502 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 51
5.6. ZSPM1502 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 52
5.7. ZSPM1502 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 53
5.8. ZSPM1502 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 54
5.9. ZSPM1503 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 55
5.10. ZSPM1503 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 56
5.11. ZSPM1503 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 57
5.12. ZSPM1503 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 58
5.13. ZSPM1504 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 59
5.14. ZSPM1504 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 60
5.15. ZSPM1504 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 61
5.16. ZSPM1504 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 62
5.17. ZSPM1505 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 63
5.18. ZSPM1505 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 64
5.19. ZSPM1505 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 65
5.20. ZSPM1505 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 66
5.21. ZSPM1506 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 67
5.22. ZSPM1506 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 68
5.23. ZSPM1506 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 69
5.24. ZSPM1506 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 70
5.25. ZSPM1507 – Typical Load Transient Response –Capacitor Range 1 – Comp0 .................................... 71
5.26. ZSPM1507 – Typical Load Transient Response –Capacitor Range 2 – Comp1 .................................... 72
5.27. ZSPM1507 – Typical Load Transient Response –Capacitor Range 3 – Comp2 .................................... 73
5.28. ZSPM1507 – Typical Load Transient Response –Capacitor Range 4 – Comp3 .................................... 74
5.29. ZSPM1508 – Typical Load Transient Response –Capacitor Range 1 – Comp0 .................................... 75
5.30. ZSPM1508 – Typical Load Transient Response –Capacitor Range 2 – Comp1 .................................... 76
5.31. ZSPM1508 – Typical Load Transient Response –Capacitor Range 3 – Comp2 .................................... 77
5.32. ZSPM1508 – Typical Load Transient Response –Capacitor Range 4 – Comp3 .................................... 78
5.33. ZSPM1509 – Typical Load Transient Response –Capacitor Range 1 – Comp0 .................................... 79
© 2016 Integrated Device Technology, Inc.
4
January 27, 2016
ZSPM15xx Datasheet
ZSPM1509 – Typical Load Transient Response –Capacitor Range 2 – Comp1 .................................... 80
ZSPM1509 – Typical Load Transient Response –Capacitor Range 3 – Comp2 .................................... 81
ZSPM1509 – Typical Load Transient Response –Capacitor Range 4 – Comp3 .................................... 82
ZSPM1511 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 83
ZSPM1511 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 84
ZSPM1511 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 85
ZSPM1511 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 86
ZSPM1512 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 87
ZSPM1512 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 88
ZSPM1512 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 89
ZSPM1512 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 90
ZSPM1513 – Typical Load Transient Response – Capacitor Range #1 – Comp0 ................................. 91
ZSPM1513 – Typical Load Transient Response – Capacitor Range #2 – Comp1 ................................. 92
ZSPM1513 – Typical Load Transient Response – Capacitor Range #3 – Comp2 ................................. 93
ZSPM1513 – Typical Load Transient Response – Capacitor Range #4 – Comp3 ................................. 94
Typical Efficiency Curves – ZSPM1502 with ZSPM9000, ZSPM9015, and ZSPM9060 DrMOS ........... 95
Typical Efficiency Curves – ZSPM9000 DrMOS with ZSPM1504, ZSPM1505, and ZSPM1506 ........... 96
Typical Efficiency Curves – ZSPM9000 and ZSPM9060 DrMOS with ZSPM1508 and ZSPM1509 ...... 97
Typical Efficiency Curves – ZSPM9000 and ZSPM9060 DrMOS with ZSPM1511, ZSPM1512,
and ZSPM1513 ........................................................................................................................................ 98
6 Mechanical Specifications .............................................................................................................................. 99
7 Ordering Information .................................................................................................................................... 100
8 Related Documents ...................................................................................................................................... 100
9 Glossary ....................................................................................................................................................... 101
10 Document Revision History .......................................................................................................................... 101
5.34.
5.35.
5.36.
5.37.
5.38.
5.39.
5.40.
5.41.
5.42.
5.43.
5.44.
5.45.
5.46.
5.47.
5.48.
5.49.
5.50.
5.51.
5.52.
List of Figures
Figure 2.1
Figure 2.2
Figure 2.3
Figure 3.1
Figure 3.2
Figure 4.1
Figure 4.2
Figure 4.3
Figure 4.4
Figure 4.5
Figure 5.1
Typical Application Circuit with a 5V Supply Voltage ..................................................................... 25
Block Diagram ................................................................................................................................ 26
Pin-out QFN24 Package ................................................................................................................ 28
Simplified Block Diagram of the Digital Compensation .................................................................. 30
Power Sequencing ......................................................................................................................... 31
ZSPM15xx – Application Circuit with a 5V Supply Voltage ........................................................... 34
Output Voltage Sense Circuitry ...................................................................................................... 38
Inductor Current Sensing Using the DCR Method ......................................................................... 38
Input Voltage Sense Circuitry......................................................................................................... 39
External Temperature Sense Circuitry ........................................................................................... 39
ZSPM1501 with Comp0; 5A to 15A Load Step; and Min. Capacitance ......................................... 47
© 2016 Integrated Device Technology, Inc.
5
January 27, 2016