webinar slides: digital power management and power integrity analysis and testing
TRANSCRIPT
WEBINAR: Digital Power Management, Power Integrity, and Power Rail SequenceAnalysis & TestingMarch 2nd, 2017Thank you for joining us. We will begin at 1:00pm EST. NOTE: This presentation includes Q&A. We will be taking questions during the presentation with answers at the end using the questions section of your control panel.
March 2, 2017 1
Teledyne LeCroy Overview
March 2, 2017 2
LeCroy was founded in 1964 by Walter LeCroy Original products were high-speed digitizers
for particle physics research Corporate headquarters is in Chestnut Ridge,
NY Long history of innovation in digital
oscilloscopes First digital storage oscilloscope Highest bandwidth real-time oscilloscope
(100 GHz) LeCroy became the world leader in protocol
analysis with the purchase of CATC and Catalyst Frontline Test Equipment and Quantum
Data were also recently acquired (2016) In 2012, LeCroy was acquired by Teledyne
Technologies and renamed Teledyne LeCroy
• Product Manager with Teledyne LeCroy for over 15 years
• B.S., Electrical Engineering from Rensselaer Polytechnic Institute
• Awarded three U.S. patents for in the field of simultaneous physical layer and protocol analysis
Ken JohnsonDirector of Marketing, Product ArchitectTeledyne [email protected]
March 2, 2017 3
About the Presenter
Digital Power Management, Power Integrity, and Power Rail SequenceAnalysis & Testing
Test single or multi-phase digital power management ICs (PMICs), voltage regulator modules (VRMs), point-of-load (POLs) switching regulators, low-dropout (LDO) regulators or other DC-DC converter operations under transient load conditions, and test complete embedded systems that contain these devices.
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Agenda
Overview Acquiring DC Voltage/Power Rails Transient Rail Response Analysis
Single Rail Multiple Rails
Multi-phase PMIC DC-DC Converter Current Sharing/Tracking Analysis Voltage/Power Rail Sequence Testing Power Integrity Measurement and Debug Examples Summary Questions
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Overview
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Power Electronics Designs are Used Everywhere…
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This Webinar’s Focus is on the Following
Digital Power Management The control of various DC-DC converter voltages to
ensure appropriate and prompt delivery of current (power) over one or more DC power/voltage rails to various CPU, memory, or other devices in a motherboard or embedded computing system.
Power Integrity The analysis to determine whether expected voltage
and current requirements are met from regulated DC output to the power consuming device.
Voltage/Power Rail Sequence Testing The control of the ramp times and sequence of the
various DC power/voltage rails in a motherboard or embedded computing system.
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Digital Power Management Overview
An embedded computing system requires one or more different “rails” (e.g., 3.3, 1.8, 1.5, 1.1Vdc) to provide voltage and current to the CPU and other on-board devices.
Bulk power is supplied to an embedded computing system through a high voltage (e.g., 12Vdc) bus/supply.
To provide high efficiency, each DC-DC converter power supply is actually several DC-DC converters in parallel.
In this example, there are four parallel DC-DC converters (called “phases” or “channels”) that each supply 25% of the total output current to the 1.1Vdc rail.
A Power Management IC (PMIC) turns the phases on and off as load power requirements change, and time interleaves the PWM outputs into one output.
The PMIC and CPU are both located on a motherboard of some type. The motherboard may be part of a larger stand-alone embedded system, or it could be used in a server, laptop, tablet, mobile phone, gaming system, consumer device, etc.
4 “phase” or “channel”
outputs from one DC-DC converter
1 DC power / voltage rail
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PMIC
The CPU issues serial data commands to the PMIC so as to ensure proper current supply to all devices
Digital Power Management and Power IntegrityHalf-bridge output
The half-bridge output current is commonly called the “inductor current” because it flows through the output inductor (filter). It increases (ramps up)
when PWM signals are “ON” and ramps down when PWM signals are “OFF”
Additional load capacitance will filter this further
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Digital Power Management and Power IntegrityIdeal operation of multiple PMIC phases
Ideally, each PMIC phase under steady-state load condition is balanced Same amplitude (voltage PWM) Phase relationship to other
phases of (1/fs)/N fs is the power semiconductor
device switching frequency N is the number of phases
Example - these are the phase currents under steady-state operating conditions after filtering by the inductor
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Digital Power Management and Power IntegrityNon-ideal operation of multiple phases
If there are amplitude errors between the different phases, output ripple will result
If there are amplitude and phase errors between the different phases, more complicated distortion patterns will be introduced
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First Polling Question (choose one or more)
What products are you designing and testing? Multi-phase Digital Power Management ICs (PMICs) VRM, POL or LDO regulators Unregulated DC supplies Embedded Systems using one or more of the above None of the above
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Acquiring DC Power/Voltage Rails
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Acquiring DC Power/Voltage Rails There are three methods (but only one very good method)1. 50Ω Coaxial Cable Terminated at
Oscilloscope Input with DC 1MΩCoupling Reasonable noise performance, but… Requires high offset capability in the
oscilloscope…. or requires use of a DC block (not ideal)
Reflections due to impedance mismatch
Bandwidth limitations2. Conventional 10x Passive Probe
Poor noise performance Bandwidth limitations Maximum gain setting limitations
3. Use of Specialized Active Voltage Rail Probe Ideal solution – lowest noise, highest
bandwidth, lowest circuit loading
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Acquiring DC Power/Voltage Rails Using a coaxial cable input terminated in 1 MΩ at the oscilloscope input Requires large native offset capability
in the oscilloscope HDO offset capability is very large
(more than any other oscilloscope) +/-1.6V (1mV to 4.95mV/div) +/-4.0V (5mV to 9.9mV/div) +/-8.0V (10mV to 19.8mV/div) +/-10.0V (20mV to 1V/div)
Or requires a DC block DC blocks don’t pass all AC
frequencies 1 MΩ oscilloscope termination has
limitations Frequency response <1 GHz Reflections due to impedance
mismatch
Signal input via coaxial cable to Teledyne
LeCroy HDO
Same signal as above with 1.8 V offset and gain
of 5 mV/div
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1.8 V
0 V1 V/div
5 mV/div
0 V offset
1.8 V offset
1.8 V
0 V
Acquiring DC Power/Voltage Rails What’s wrong with using a conventional 10x passive probe? Passive Probes have 10x attenuation
Therefore, the oscilloscope gain setting is 1/10th that of the desired gain setting
This has the following impacts on the measurement: Increased noise
what is attenuated must be amplified Reduced offset capabilities
Offset capability is determined by underlying oscilloscope gain setting
Higher maximum gain setting i.e., an oscilloscope with a 1 mV/div maximum
gain setting used with a 10x probe will have a 10 mV/div probe+oscilloscope maximum gain setting
Additionally, the Passive Probe also has bandwidth limitations 1 MΩ oscilloscope terminations limit
frequency response to <1 GHz Passive Probe frequency response is typically
~500 MHz (maximum)
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1.8 V
0 V1 V/div
10 mV/div
0 V offset
1.8 V offset
1.8 V
0 V
Signal input via Passive Probe to
Teledyne LeCroy HDO
Same signal as above with 1.8 V offset and gain
of 10 mV/div
Acquiring DC Power/Voltage Rails What’s wrong with using a conventional 10x passive probe? (continued)
This is the same example as the previous slide, but with a vertical zoom of Channel 1 Z1 = Zoom(C1)
Gain of vertical zoom is set to be equal to 5 mV/div Creates direct comparison to
previous coaxial cable input example and next (rail probe) example.
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1.8 V
0 V1 V/div
5 mV/div
0 V offset
1.8 V offset
1.8 V
0 V
Signal input via Passive Probe to
Teledyne LeCroy HDO
Same signal as above with 1.8 V offset and vertically
zoomed to 5 mV/div
Acquiring DC Power/Voltage Rails Using a specialized Rail Probe Provides four important capabilities for rail
voltage acquisitions: 50 kΩ Input Impedance
Very low circuit loading on the DC rail 1.2x Attenuation
Keeps scope+probe noise very low ~165 μVrms at 1 GHz and 1 mV/div
(HDO) +/-30V Offset built-in
Center a DC signal and use a high-sensitivity gain setting (e.g., 1-20 mV/div)
4 GHz of bandwidth +/-800 mV dynamic/differential range
Offset must be applied or a >800mV signal will not appear on the oscilloscope grid
Can also be re-purposed for full dynamic range voltage/power rail acquisitions Use an SMA to BNC adapter and attach
directly to BNC input with 1 MΩ coupling
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1.8 V
0 V200 mV/div
5 mV/div
0 V offset
1.8 V offset
1.8 V
0 V
Signal input via RP4030 Active Voltage Rail Probe to Teledyne
LeCroy HDO
Same signal as above with 1.8 V offset and gain
of 5 mV/div
Acquiring DC Power/Voltage RailsComparison summary from previous four slides
March 2, 2017 20
Coaxial Cable Input Terminated at 1 MΩ
February 1, 2017 20
5 mV/div 1.8 V offset
1.8 V
0 V
5 mV/div 1.8 V offset
1.8 V
0 V
Passive Probe
5 mV/div 1.8 V offset
1.8 V
0 V
Active Voltage Rail Probe
Best Solution
RP4030 Active Voltage/Power Rail ProbeA wide variety of tips and leads for DUT connection are supplied
ProBus-compatible amplifier MCX PCB Mounts (4 GHz)
(good for larger circuit boards – attach and leave in place for quick and easy connection to cable)
MCX Solder-in Lead (4 GHz)(can be soldered-in and left in circuit)
SMA to MCX short cable
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MCX to U.FL Lead (3 GHz)(attaches to compact U.FL PCB
Mounts).
MCX to SMA Adapter
U.FL PCB Mounts(compact size for dense, mobile or
handheld systems)
RP4030 Equivalent Circuit DiagramThe RP4030 probe is shaded in gray, and the cable and oscilloscope are not shaded
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High Bandwidth SMA Connector
MCX Termination Provides Flexibility for DUT Connection
High DC Input Impedance (Low DUT Loading) with Low
High Frequency Input Impedance
High precision, high dynamic range offset DAC
(16-bit, 30V)
Auto Zero of Probe Can be Done While Connected to DUT
RP4030 U.FL Solution for Compact PCBs
Hirose U.FL ultra-miniature PCB mounts can be designed in to make probing easy 3mm x 3mm Functionally equivalent to IPX
and UMCC connectors 3 GHz Low cost
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Removal is simple with a widely available special-purpose extraction tool
RP4030 Solder-in Lead
Solder-in Lead Provides Optimum Performance 4 GHz Reasonable cost
Multiple Leads Can be Soldered-in and Left in Place
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RP4030 Optional Browser
SMA to SMA Cable
(for connecting to the RP4030 ProBus
compatible amplifier)
SMA to BNC Adapter
(for connecting directly to a scope BNC input if used as
a PP066 Transmission Line Probe)
Browser Tip with 0Ω Resistor
(for low attenuation, good noise performance)
450Ω and 950ΩResistors
(for use as 10x or 20x PP066 equivalent)
March 2, 2017 25
Other Teledyne LeCroy Voltage and Current ProbesThat are commonly used in Digital Power Management and Power Integrity Testing
Differential Amplifiers (DA1855A) and Probes (AP033) with 10x Gain Ideal for shunt/series resistor
measurements Up to 100 dB CMRR
High Sensitivity Current Probes 50 or 100 MHz
Low-cost 1 GHz Active FET Probe Great for general probing or
power sequence testing
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10x Gain Differential Voltage Probe for Series/Shunt ResistorTop is a conventional diff probe, bottom is a CMRR optimized probe amplifier with 10x gain
March 2, 2017 27
Second Polling Question (choose one or more)
What types of probes do you use today to probe DC power/voltage rails? Coaxial cables (50Ω input coupled to oscilloscope) Coaxial cables (1MΩ input coupled to oscilloscope) Conventional 10x passive probes Conventional single-ended active voltage probes Active voltage rail probe (power rail probe)
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Transient Rail Response AnalysisOf a single voltage/power rail
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Typical Digital Power Management and Power Integrity TestsFor One PMIC (One DC Voltage/Power Rail) PMIC Transient DC Rail Response
Addition or release (subtraction) of load Dynamic test Long capture time is very useful Correlate activity to other signals
Serial data commands Clocks / Strobes Enable lines
Measure DC Rail and Ensure that Tolerances are Met Mean voltage value Ripple Ringing Peak+ and Peak- Settling Time Droop
DC Rail
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Example of Commonly Measured Voltage/Power Rail Parameters
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7 mV/div993 mV offset
DroopRipple
(Periodic and Random Disturbances)
Settling
RippleCurrent
Transient
Peak -
Recovery Time
PMIC Transient Rail Response TestingAcquiring and Viewing the Transient Response of a Single DC Rail
Load increased from ~0 to 20A
DC Rail voltage transient response is monitored
7 mV/div gain setting with 1Vdc offset
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20A
No-load (near 0A)
Mean DC = 999.67mVMean DC = 1003mV
Load current
1.0V multi-phase railAcquired using the
RP4030 Active Voltage Rail Probe
Acquired using the CP030A High-sensitivity
Current Probe
PMIC Transient Rail Response Testing, cont’dQuantifying the Transient Response of a Single DC Rail with Measurement Parameters Measurement
Parameters with Gates can be used to measure VdcRAIL before and after load. 999.67 mV before 1003.00 mV after
Zooms and measurement parameters can be used to understand high-frequency behaviors Z1 = VMIN at step
(967.70 mV) Z5 = VMAX before
step (1012.21 mV) Z7 = VMAX after step
(1016.38 mV) Measure Parameter can
be used to measure step load change 20.436 A
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DC Rail Current
DC Rail Voltage
Mean DC = 999.67mVMean DC = 1003mV
12-bit Resolution
PMIC Transient Rail Response Testing, cont’dPer-cycle Waveforms and Numerics to understand rail behaviors (DIG-PWR-MGMT option)
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Load current
Mean Value Numerics Table of 1V Rail
Acquired Waveforms
Per-cycle Calculated WaveformsThese waveforms have one calculated
value for one per-cycle calculation period.
1.0V multi-phase rail
Transient Rail Response AnalysisOf multiple voltage/power rails
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PMIC Transient Rail Response Testing, cont’dMultiple PMICs and Multiple DC Rails
Same Tests as Single Rail Case Objective is to Understand
Impacts of Load Changes on All Rails at One Time
Clocks / StrobesEnablesSerial Data, etc.
DC Rail 1
DC Rail 2
DC Rail 3
DC Rail 4
+
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PMIC Transient Rail Response Testing, cont’dAcquiring and Viewing the Transient Response of a Load Release on Multiple Rails
Monitored input signals included Simple DC Rails
700mV 900mV 1.2V 1.5V
Multi-phase DC Rail (1.0V)
12V supply Rail Load Current
(20A to 0A) PWM Clock
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PWM Clock Frequency
900mV rail
700mV rail
1.5V rail
1.2V rail
1.0V multi-phase rail
12V input supply
Load current
PMIC Transient Rail Response Testing, cont’dDigital Power Management (DIG-PWR-MGMT) Software Provides More Information
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PWM Clock Frequency(used to determine period over which calculations can be made)
900mV rail
700mV rail
1.5V rail
1.2V rail
1.0V multi-phase rail
12V input supply
Load current
Mean Value Numerics Table
Acquired Waveforms
Calculated Waveforms
Q-Scape Tabbed Display
Mean DC rail values calculated once per PWM clock cycle and plotted over time, time-correlated to original acquisitions.
Mean DC values of 1.0V rail more clearly shows settling time and rail droop.
Load release on 12V supply can be clearly observed as an 80mV voltage increase with an improved voltage tolerance (sdev).
PMIC Transient Rail Response Testing, cont’dZoom+Gate provides capability to understand details of system response
March 2, 2017 39
PWM Clock Frequency(used to determine period over which calculations can be made)
Load current
Mean Value Numerics Table
50x Zooms of Acquired Waveforms
50x Zooms of Calc’dWaveforms
These alternating color-coded highlights indicate the identified periods we are making the per-cycle calculations during.
These waveforms have one calculated value for one per-cycle calculation period.
Multi-phase PMIC DC-DC Converter Current Sharing/Tracking Analysis
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PMIC Transient Rail Response Testing, cont’dFor Multiple Phases in One PMIC
PMIC Load/Current Sharing/Tracking Measure voltage/current on each
individual phase output Difficult to do – PMIC normally does not
make output accessible for measuring current
Phase 1
Phase 4
Phase 3
Phase 2
March 2, 2017 41
Combined Research Project (Oracle + Teledyne LeCroy) “A Generic Test Tool for Power
Distribution Networks” Dr. Istvan Novak
Senior Principal Engineer, Oracle Peter Pupalaikis
VP Technology Development, Teledyne LeCroy
Presented February 2, 2017 at DesignCon 2017 in Santa Clara, California (USA)
http://cdn.teledynelecroy.com/files/whitepapers/designcon-2017-a-generic-test-tool-for-power.pdf
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Transient source
3 x AP033 differential
probes
DUT
Lab Setup
HDO81088ch, 12 bit, 1 GHz oscilloscope
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DUT: 3-phase non-isolated buck converter
Device Under Test (DUT) Setup
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Potential variables: DC load current DC input voltage DC output voltage Temperature AC excitation current
Impedance magnitude [Ohm]
Output Impedance vs. DC Load Current (Light Load)
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Output voltage transient
Current-sense voltage Sum of inductor
currents
Three inductor currents
Transient Current Step
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Current Sharing vs. Frequency
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Voltage/Power Rail Sequence Testing
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What is Sequence Testing? For the computing system to
“boot-up” correctly, the DC rails must turn ON in a specific order with specific “wait times” between each turn ON.
For example, First 3.3Vdc goes high Then, 200-500ms later, 1.8Vdc
goes high Then 200-500ms later, 1.5Vdc
goes high Lastly, 500ms-800ms later,
1.1Vdc goes high
March 2, 2017 49
What are Sequencing Tests? Acquire as many DC rail signals as
possible More is better – great 8ch application
Acquire other signals, e.g.: Clocks PMIC enable Strobes Serial data command signals to PMIC
Measure timing between signals Usually with cursors Serial TDME options could be useful to
some customers Long capture times with high SR are
common 250 Mpts of memory is very useful Capture a lot of time at high sample
rate in many different start-up scenarios, and zoom for details
The image above is a start-up sequencing requirement (timing details are omitted) for a TI embedded ARM microprocessor (http://www.ti.com.cn/product/cn/AM3358-EP/datasheet/6_ZHCSE24A
Note the many different rail voltages (5 different) and multiple 1.8Vdc rails – this is very common Important reason why 8ch is very, very useful
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Voltage/Power Rail Sequence Testing on Power Down50 Mpt capture at 250 MS/s (200 ms) – using timing parameters to measure delta times
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900mV rail
700mV rail
1.5V rail
1.2V rail
1.0V multi-phase rail
Unregulated 1.0V rail
Load current
Measurements of Delay Time from Ch3 Going Low to Other
Rails Going Low
Scope trigger set to first rail known to go low.
1.0V multi-phase rail
Unregulated 900mV rail
Voltage/Power Rail Sequence Testing – Using Serial Data Toolsets Trigger on a Serial Data Message, Decode It, and Make Automated Timing Measurements
March 2, 2017 52
900mV rail700mV rail1.5V rail1.2V rail
Unregulated 1.0V rail
Load current
Serial Data message initiates power-up
1.0V multi-phase rail
Unregulated 900mV rail
Time from serial data message to power up calculated using automated parameter and decoded serial data.
Decoded serial data message that initiated sequencing activities
Serial Data Toolsets – Measurements and Graphing Timing Measurements
Message to Analog Analog to Message Message to Message
Message to Value “Serial DAC”
Automatic Run corner cases,
gather statistics Display histograms Correlate cause-effect
timing relationships to other events
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Message to Value parameter
View serial data change over time
Examples PMbus voltage I2C or SPI
temperature CAN steering
wheel angle CAN wheel
speed (ABS) I2S audio
“Serial Data DAC” Graphing of Digitally Decoded Data
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Serial Data messages (100s or 1000s)
Track of Message to Value parameter
Message to Value parameter
SPMI (System Power Management Interface) Decoder
SPMI MIPI standard
More than 20+ other complete solutions I2C (PMbus) UART-RS232 SPI USB2 HSIC etc.
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Power Integrity Measurement and Debug Examples
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Power Integrity Measurement and Debug Example 1
Jitter on a 10 MHz clock circuit is traced back to a 2.9 MHz Point-of-load (POL) DC-DC converter
March 2, 2017 57
Overview of DUTPower Delivery System for a Wireless Router
Switched-mode AC-DC power
supply
Point-of-Load (POL) DC-DC
converter
Power delivery network
March 2, 2017 58
2.9 MHz POL DC-DC Converter Spectral MeasurementsThe oscilloscope Spectrum Analyzer capability is used to frequency peaks of the POL
March 2, 2017 59
Short Acquisition @ 20 GS/s
Long Acquisition 250 MS/s
Spectrum Analyzer
Table
Peak Markers Correspond to Table
POL Ripple Contributes to Clock Jitter JitterKit can be used to quantify jitter on 10 MHz clock and trace it back to the POL
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10 MHz clock acquisition (500 μs long)
TIE Jitter vs. time for the 10 MHz clock
TIE Jitter Overlay of 10 MHz clock
acquisition
TIE Jitter Spectrum of 10 MHz Clock
Histogram of TIE measurements
Spectrum Analysis Table from 2.9 MHz POL
Power IntegrityMeasurement and Debug Example 2
Understanding the impact of the power delivery network (PDN) impedance on clock jitter coupling
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Background - The Importance of Impedance
+-
+ + + ++
LoadVRM
Bulk Caps Decoupling Caps
Capacitance of Planes Package
Package Lead Inductance
Control Loop Inductance
+
-LoadVCC
Impedance of PDN
VChip
ZPDN
IMax
Vcc ≠ VChip
March 2, 2017 62
An LDO DC-DC Converter Supplies Power to 10 and 125 MHz Clocks
March 2, 2017 63
Impedance – Measurement Example
+
-LoadVCC
Impedance of PDN
VChip
ZPDN
IMax
March 2, 2017 64
Power Rail Voltage Measured at VCC
Power Rail Voltage Measured at VCHIP
10 MHz Clock Causing Ripple on Input Voltage Rail (VCC)
March 2, 2017 65
Long acquisition of VCC
Spectrum Analysis of VCC
Spectrum Analysis Table of VCC
10 MHz Clock Induced Ripple on VCC Impacts 125 MHz ClockRipple adds 1ps of jitter on the output of the125 MHz clock
March 2, 2017 66
TIE Jitter Spectrum of 125 MHz Clock
Histogram of TIE measurements
This is a TIE jitter analysis of the 125 MHz clock (the original acquisition is not shown)
Measuring Impedance of the PDNThe plot indicates the impact of the ESR and ESL on the circuit
Omicron Bode 100 40 MHz Network
Analyzer
March 2, 2017 67
Image source http://www.powerelectronictips.com/ceramic-or-electrolytic-output-capacitors-in-dcdc-converters-why-not-both/
Power/Voltage Rail behaviors during load changes correlate to PDN impedance Equivalent series resistance (ESR) and
inductance (ESL) for half-bridge output capacitor (COut)
Voltage transients at load changes are primarily caused by ESL or impedance of the output cap at very high frequencies.
Slew rates impacted by the reactive power of the capacitor (QC)
A Decoupling Capacitor Can Be Used to Lower ImpedanceTIE jitter is reduced by more than 1psrms in this example
March 2, 2017 68
S301-2 ON w/o decoupling C
S301-2 ON w/ decoupling C
Power IntegrityMeasurement and Debug Example 3
High clock jitter and malfunction can be seen to be caused by POL DC-DC converter voltage droop.
March 2, 2017 69
POL DC-DC Converter Transient Load ResponseThis provides information about the impedance of the PDN
March 2, 2017 70
Load Current (acquired with a differential voltage probe
and not rescaled to amps)
POL Output Voltage
dI/dt Calculated Waveform
single-phase operation single-phasemulti-phase operation
Transient Load Response Jitter AnalysisThe POL output voltage droop to the clock causes large clock jitter
March 2, 2017 71
TIE Jitter Overlay of 10 MHz clock acquisitionThis persistence overlay of the clock cycles shows very little
jitter with a small number of clock edges having significant jitter
TIE Jitter vs. time for the 10 MHz clockJitter can be seen to vary significantly during voltage droop
200ps TIE Jitter per vertical
division
POL Output Voltage to 10 MHz clock vs. time100mV droop occurs during step load
Jitter is quantified with Time Interval Error measurement. Peak to peak jitter is 1ns which is 1/8 of a period
Transient Load Response – Power Switched on to a Second ClockLoad of second clock causes POL voltage droop and impacts 10 MHz clock functioning
March 2, 2017 72
POL Output Voltage to 10 MHz clock vs. time
Zoom of above trace
10 MHz Clock Voltage vs. time
Zoom of above trace
Third Polling Question (choose one or more)
What types of testing do you do? Analysis of a single or multiple voltage/power rail(s) Multi-phase current tracking/sharing Power rail sequence testing and timing Embedded system debug for some/all of the above None of the above
March 2, 2017 73
Summary
March 2, 2017 74
Teledyne LeCroy Equipment for Digital Power Management, Power Integrity, and Power Sequencing Test and Analysis
March 2, 2017 75
4 or 8 channel, 12 bit, 1 GHz Oscilloscopes
Comprehensive Probe Offering
DIG-PWR-MGMT Digital Power Management Analysis Software Option
Serial Trigger, Decode, Measure/Graph and Eye Diagram
(TDME) Options
4 channel, 10 bit, 4 GHz Oscilloscopes
JITKITJitter Kit Toolbox Analysis
Software Option
SPECTRUMSpectrum Analyzer software
(standard on most HDOs)