1. FRA Measurements for Power Electronics
January 28th, 2019
Steve Sandler

2. Primarily focused on RF, Analog, and Distributed Power Systems
40+ Years Experience (1977-present)
AEi Systems – Founder and CTO (1995-)
Picotest – Founder and Managing Director (2010-)
Test Engineer of the Year ( )
Experience: Space Shuttle, Space Station, GPS, Large Hadron Collider and many other military and commercial projects
Primarily focused on RF, Analog, and Distributed Power Systems
I enjoy writing
lecturing
lab time
and making pizza

3. The FRA measurements
FRA Analysis
Control Loop
PSRR/PSMR

4. Control loop Measurement

5. Power Supply Rejection/Modulation Ratio
PSRR/PSMR

6. $ Targeting Customers $ Components Digital Design Power Designers
AC/DC
DC/DC
Silver box
Components
IC Manufacturers
TI, Analog Devices, Xilinx, ON Semi
Digital Design
FPGA, DDR, Clocks
VRM/PCB Design
EMC, Intel
RF & Microwave
Amplifiers, Sensors
Microsemi / Symmetricom
Here you will overview the key markets, market segments, types of customers and applications. Place pictures representing each market on the slide. $ $

7. The Most Basic Scope FRA Bundle
J2100A Injection transformer
J2120A Line injector
VRTS 1.6 Demo Board

8. The J2120A Line Injector ~ 1𝑢𝑉 𝐻𝑧 ~1𝑚𝑉𝑝𝑝 ~ 350𝑛𝑉 𝐻𝑧 ~200𝑢𝑉𝑝𝑝
~ 1𝑢𝑉 𝐻𝑧 ~1𝑚𝑉𝑝𝑝
~ 350𝑛𝑉 𝐻𝑧 ~200𝑢𝑉𝑝𝑝
ULTRA-LOW noise
Up to 50VDC 5Amps
CE Certified
~ 1𝑛𝑉 𝐻𝑧 ~2𝑢𝑉𝑝𝑝
Need higher voltage or current?
J2121A 400VDC/20A

9. The J2100A and J2101A Transformer
High linearity/low distortion
Up to 600V Cat II
CE Certified
Need higher bandwidth, lower frequency?
J2110A DC-100MHz 10V injector

10. Common measurement errors?
The results can become distorted if the injected signal is too large
May need to remove many or most of the input capacitors
The scope has limited dynamic range. The demo boards are designed to stay inside this range. Going outside the range can result in bad data
Induced noise in ground leads can be significant – plug for the mmcx tips works here

11. Demonstrating the FRA features
Control the setting by using your own demo boards and knowing the right answer
Start with the VRTS1.6 to show off mmcx probe tips.
Some customers will complain that VRTS1.6 is a linear regulator – too easy
LM20143 is pocket sized, USB powered control loop demo switching regulator
VRTS3 is more sophisticated, USB powered, switching regulator and PSMR
LM20143
VRTS3

12. Picotest products and expertise are available to you and your customers
Visit
Visit
Hands-on workshops at
+1 (480)
Connect with me on LinkedIn
Join the Power Integrity for Distributed Systems Linkedin Group
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13. Thank you for attending this session!
Call to Action!
Thank you for attending this session!
Search for these opportunities at the highest level possible
Use Picotest as your consultant. We can answer questions you can’t and potentially boost margin
Encourage customer training – Educated customers spend more and most attendees do purchase
These measurements are a stepping stone to Power Integrity. Power Integrity has much more $$$ to spend