https://ds.murata.co.jp/bist/?lcid=en-us

Bias-T Inductor Design support Tool

Operation Manual1
1

Aug 2020
murata.com Copyright © Murata Manufacturing Murata
Co., Ltd. All rights
reserved.
12 August 2020
ManufacturingCo., Ltd.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

12 August 2020

https://ds.murata.co.jp/bist/?lcid=en-us

Tool Overview
Find optimal products combination for PoC bias-T inductors by simple operations.
Operations- setting conditions (circuit, criteria, current, cable (In case selected “with cable ”))- pressing the Optimize button to discover
Select circuits and criteria
Input cable type and length(only when with cable)

Input current value

Result- optimal products combination- the graph display of S21 (IL), S11 (RL), S21/S11, Z- Pass/Fail for standards that are to be cleared- the smallest margin, total DCR/area of filters, largest height
Selected part number

Graph notation of
S21, S11,
S21/S11, and Z
results
Margins for criteria

クライテリアに対する
Pass or Fail
Total DCR

Total floor area

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

2https://ds.murata.co.jp/bist/?lcid=en-us

Table of Contents
1, Introduction
1. What Is PoC
2. Typical Circuit Diagram of PoC Systems
3. Effects Bias-T Inductor Characteristics Apply on Signal Quality
4. Importance of PoC Bias-T Filter Selection
2, Tool Functions
1. Circuits That Can Be Simulated
2. Criteria
3. Cables
4. Stray Capacitance Settings of the Board
5. Selection of Automatic Optimization
3, Tool Overview
1. User Interface
2. Details of each sections
4, Tool Use Cases
1. Use Case 1 (Automatic selection with “with cable” circuit)
2. Use Case 2 (Automatic selection with “without cable” circuit)
3. Use Case 3 (Change optimization method and Compare)
4. Use Case 4 (Reselect L from inductor list)
5. Use Case 5 (Relax the set up condition after the result become “Fail”)
6. Use Case 6 (Reduce parallel R)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

3https://ds.murata.co.jp/bist/?lcid=en-us

1, Introduction
1. What Is PoC
2. Typical Circuit Diagram of PoC Systems
3. Effects Bias-T Inductor Characteristics Apply on Signal Quality
4. Importance of PoC Bias-T Filter Selection
2, Tool Functions
1. Circuits That Can Be Simulated
2. Criteria
3. Cables
4. Stray Capacitance Settings of the Board
5. Selection of Automatic Optimization

Back to the tableof contents

3, Tool Overview
1. User Interface
2. Details of each sections
4, Tool Use Cases
1. Use Case 1 (Automatic selection with “with cable” circuit)
2. Use Case 2 (Automatic selection with “without cable” circuit)
3. Use Case 3 (Change optimization method and Compare)
4. Use Case 4 (Reselect L from inductor list)
5. Use Case 5 (Relax the set up condition after the result become “Fail”)
6. Use Case 6 (Reduce parallel R)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

4https://ds.murata.co.jp/bist/?lcid=en-us

1-1, What Is PoC
NormalSignalBoard1Signal cable
Power cable

Power

Board2

GND

DC
Power

PoC

SignalBoard1

Power

Coaxial cable
Board2DC
Power
PoC (power over Coax) is a technology that transmits both power andsignal simultaneously through 1 coaxial cable. (This contributes toreduce the number of cables)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

5https://ds.murata.co.jp/bist/?lcid=en-us

1-2, Typical Circuit Diagram of PoC Systems

DC-DC
converter

DC-DC
converterPowersourceBias-T circuit

Camera,Sensoretc

SerDes* IC(Des)

SerDes* IC
(Ser)

ECU
etc

Coaxial cable

Power
SignalThe high frequency signal and DC power are separated
through the Bias-T circuit.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

6https://ds.murata.co.jp/bist/?lcid=en-us

1-3, Roles of PoC System Bias-T Inductors

converter

converter

Blocks DC

××

Bias-T circuit

Blocks high frequencies

Prevents inflow of DC components to the IC with thecapacitor and prevents inflow of high frequency
components to the power line with the inductor.

It is particularly necessary to select a Bias-T inductor
since it greatly affects transmission characteristics.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

7https://ds.murata.co.jp/bist/?lcid=en-us

1-4, Effects Bias-T Inductor Characteristics

Apply on Signal Quality

Measuring signal quality

Random signal
3Gbps

Vload

Vin

Bias-T
inductor
オシロスコープ

Bias-T inductor
with goodcharacteristics

Bias-T inductor
with insufficientcharacteristics

It is required to select a Bias-T inductor that canensure signal quality.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

8https://ds.murata.co.jp/bist/?lcid=en-us

1, Introduction
1. What Is PoC
2. Typical Circuit Diagram of PoC Systems
3. Effects Bias-T Inductor Characteristics Apply on Signal Quality
4. Importance of PoC Bias-T Filter Selection
2, Tool Functions
1. Circuits That Can Be Simulated
2. Criteria
3. Cables
4. Stray Capacitance Settings of the Board
5. Selection of Automatic Optimization
Back to the tableof contents

3, Tool Overview
1. User Interface
2. Details of each sections
4, Tool Use Cases
1. Use Case 1 (Automatic selection with “with cable” circuit)
2. Use Case 2 (Automatic selection with “without cable” circuit)
3. Use Case 3 (Change optimization method and Compare)
4. Use Case 4 (Reselect L from inductor list)
5. Use Case 5 (Relax the set up condition after the result become “Fail”)
6. Use Case 6 (Reduce parallel R)

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

9https://ds.murata.co.jp/bist/?lcid=en-us

2-1, Circuits That Can Be Simulated
Simulation with 3 types of circuits available.
DC-DC
converter

DC-DC
converter[2]
SerDes* IC(Ser)[1] With cable

[1]

[3]

Power
source[2][3]

SerDes* IC(Des)

Coaxial cable[2] Without cable[3] Only circuit

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

10https://ds.murata.co.jp/bist/?lcid=en-us

2-2, Criteria
S21, S11, S21/S11 criteria values that must be cleared to ensure signal
quality are set by each IC manufacturers or customers.

Automatically selects products combinations that clear these criteria.

This tool can be selected from the following.

• Select the IC manufacturer recommended criteria• Select the criteria set by MURATA• Upload your criteria

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

11https://ds.murata.co.jp/bist/?lcid=en-us

2-3, Coaxial Cable
Loss varies by cable type and length.
To run simulations on circuits with cables, settings considering cablecharacteristics must be applied.

0

0

-10

-10

S21(dB)

S21(dB)

Relationship between cable length and S-parameter

-20

-30

-20

-30
Cable for high speed (10m)Cable for low speed (10m)

-40

1

10

100
Freq.(MHz)1000

2 types of cables can be selected on thissimulator.

-40

5m
10m
15m
1

10

100
Freq.(MHz)1000

Input an applicable value for cable length.
(Usually about 15 m or less)

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

12https://ds.murata.co.jp/bist/?lcid=en-us

2-4, Current, Temperature, and Size Settings

The number of selectable inductors

Inductors that match the conditions set in condition settings areprovided.
Applying less options for ambient temperature conditions and current
conditions provide more inductors that can be selected.
Lower Ambient
temperature

Higher Ambient
temperature

DC current

largerCopyright © Murata Manufacturing Co., Ltd. All rights reserved.

13https://ds.murata.co.jp/bist/?lcid=en-us

2-5, Serial Connection of Bias-T Inductors
In Bias-T circuits, to ensure signal quality by reducing loss in wide bandwidths
ranging from low frequencies to high frequencies, Multiple inductors must
be used in series.
Good characteristics by connecting
Large L inductors＋Medium L inductors＋Ferrite beads
0

Loss in wide bandwidths can be reduced by
combining the following:- Large L inductors that cover low frequencies- Medium L inductors that cover intermediate
frequencies- Ferrite beads that cover high frequencies-1

Intermediate frequencies
deteriorate when medium L
inductors are removed

S21(Insertion loss)[dB]

-2
-3
-4

Low frequencies
deteriorate whenlarge L inductors are
removed-5-6-7High frequencies
deteriorate when
ferrite beads are
removed

BLM18DN601SH1,LQW32FT220M0H,LQH44PH470MPR-8

BLM18DN601SH1,LQW32FT220M0H
BLM18DN601SH1,LQH44PH470MPR-9

LQW32FT220M0H,LQH44PH470MPR
-10
0.01

0.1

1

10

100

1000

10000

Fresuency[MHz]Current 300 mA

Simulations with up to 5 parallelly connected inductors are available on this tool.
Bias-T inductors are automatically selected.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

14https://ds.murata.co.jp/bist/?lcid=en-us

2-6, How to Select Parallel Resistances
Anti-resonance will occur when several Bias-T inductors are connected serially.
By adding a parallel resistance to each inductor, anti-resonance can besuppressed.
On the other hand, characteristics other than anti-resonance will deteriorate.
By selecting a suitable resistance value, a filter characteristic that fulfills thetarget characteristic will be achieved.
L1

R1

LQW18CNR47

L2
LQW32FT100

R2Parallelresistances

Better

The following are results when “L1: LQW18CNR47” and“L2: LQW32FT100” are used, and their parallel
resistances R1 and R2 are Open, 1000 ohm, 2000 ohm,
or 4000 ohm.

Anti-resonance

R1,R2:1000ohm

R1,R2:1000ohm

R1,R2:Open

Anti-resonanceBetter

R1,R2：

R1,R2:Open

OPEN
4000 ohm
2000 ohm
1000 ohm

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

15https://ds.murata.co.jp/bist/?lcid=en-us

2-7, Effects of Board Stray Capacitance 1
A difference in characteristic results occurs between the simulation value (ideal

state) and actual value (board implementation).
Anti-resonance is present more noticeably in the actual value.
Simulation value vs. Actual value(ideal state)(board implementation))

Actual board layout and measurement state
Cross-section

Layout of each layer
Port1

Inductor

Port2

Upper

DC portUpper layer

Cupper(GND)

Cupper(GND)

Inner layer

Bottom layer

Inner

FR4

BottomMeasurement state0.033uF

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

16

https://ds.murata.co.jp/bist/?lcid=en-us

2-7, Effects of Board Stray Capacitance 1
In the actual state, the stray capacitance that occurs between the inductor and inner layer of PCB ispresent on the characteristic.
If simulations are performed considering the stray capacitance, the calculated value becomescloser to the actual value.
Inductor

Stray capacitance
Layer-to-layer
thickness ofboards d＝0.2mm

Permittivity of boards
εr=4.5

Calculating the stray capacitance from the part sizeand board information.
[C=ε×S/d] (S: area)
In this case
C1

C2

C3

C4

0.25pF

1.6pF

1.6pF

1.8pF

Reflected on the simulation
Simulation value (including stray capacitance) versus actual value (board implementation)

C1～C5：
Stray capacitanceThis simulator enables stray capacitance setting that allows calculation of results
close to the actual characteristic.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved. 17

https://ds.murata.co.jp/bist/?lcid=en-us

2-7, Effects of Board Stray Capacitance 2
The smaller stray capacitance is, anti-resonance becomes smaller as well.

Deleting the interior ground of the board suppresses anti-resonance.
Normal board (actual measurement)
versus improved board (actual
measurement)

Improved board
Port1

DC port

Port1

Normalboard

Inductor

Port2

Upper layer

Normal board
Improved board

Remove GND
Upper

Inner layer

Bottom layer

Inductor

Port2

DC portUpper layer

BottomUpper

Inner layer

Bottom layer

BottomThe stray capacitance value of the improved board is set as the default value on this simulator.
Since the values change depending on the part size and board characteristics, simulations canbe performed with the users freely changing the values.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

18

https://ds.murata.co.jp/bist/?lcid=en-us

1, Introduction
1. What Is PoC
2. Typical Circuit Diagram of PoC Systems
3. Effects Bias-T Inductor Characteristics Apply on Signal Quality
4. Importance of PoC Bias-T Filter Selection
2, Tool Functions
1. Circuits That Can Be Simulated
2. Criteria
3. Cables
4. Stray Capacitance Settings of the Board
5. Selection of Automatic Optimization
3, Tool Overview
1. User Interface
2. Details of each sections

Back to the tableof contents

4, Tool Use Cases
1. Use Case 1 (Automatic selection with “with cable” circuit)
2. Use Case 2 (Automatic selection with “without cable” circuit)
3. Use Case 3 (Change optimization method and Compare)
4. Use Case 4 (Reselect L from inductor list)
5. Use Case 5 (Relax the set up condition after the result become “Fail”)
6. Use Case 6 (Reduce parallel R)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

19https://ds.murata.co.jp/bist/?lcid=en-us

3-1, User Interface
Condition setting up section

Each elements setting and selected part number displaying section

Result section

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

20

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Condition setting up section
Circuit and criteria

Circuits and criteria can be selected fromthe pull-down menu Selectable circuit
 With cable Without cable Only circuit

Selectable criteria

 The IC manufacturer recommended criteria
 The criteria set by MURATA
 Upload your criteria
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

21

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Condition setting up section
Current and Ambient temperature, cable conditions<- Input a rated current value required for parts<- Select Ambient temperature(selectable from 25, 85, 105, 115, 125°C)
In case selected “with cable ” as the circuit< Select cable (High speed:Max20GHz、Low speed:Max8.5GHz)< Input cable length
Cable factor (editing available if “Edit” is selected in cable selection)

・Z0: Characteristic impedance・ Relative permittivity: Cable permittivity

εZ0・Damping constant: Cable loss
Damping constant

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

22

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Each elements setting and selected part number displaying section

Copy selected
Paste copied
item
item
Deleteselected item

Perform automatic selection of
optimal part number combinations

Delete all selected
items for Sim. 1 to 5

Set height limit of thefilter consisting productOptimization method-Maximize Margin：
Find the part numbers combination that provides
the best characteristics-Minimize Size :Find a combination of parts numbers with thesmallest size that meets the criteria.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

23

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Each elements setting and selected part number displaying section

L1 - L5 : Part number that consist of the Bias-T filter
R1 - R5 : Parallel resistance
C1: DC cut capacitor
C2, C3 : Decoupling capacitor
FB: Ferrite Beads as a noise filter

With cable

Without cable

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

24

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Each elements setting and selected part number displaying section

Select Product

Input parallel
resistance value

Input
capacitance value

Display
selected partnumberOptimization setup◎Status ⇒ Select the status of each elements- Optim.: Automatically select the optimum product forthis element by pressing the “Optimize” button.
- Fix. : Fix product even if the Optimize button ispressed- None : Does not select automatically◎Size code ⇒ Select the size of each elements.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

25

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Result section

Export graphdata as CSV

Display S21, S11,
S21/S11, Z graphs

Total DC resistancevalue of selected partnumber(Max and typ.)

Minimum margin value against thecriteria (Displaying markers in a graph)
Judgment(Pass/Fail)for criteria

Total size andmaximum height ofselected partnumbers

Graph smoothing function

List of selected part numbers and links

When "With cable" is selected, the influenceof the reflection due to the cable is appliedon the calculation result graph. The graphcan be smoothed with the smoothing button.

Like to selected art number- Reference spec
- Product detail page
- SimSurfing (enables characteristic
confirmation of single parts)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

26

3-2, Details of each sections

https://ds.murata.co.jp/bist/?lcid=en-us

Other features
Move by section
Open and close sections

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

27

https://ds.murata.co.jp/bist/?lcid=en-us

1, Introduction
1. What Is PoC
2. Typical Circuit Diagram of PoC Systems
3. Effects Bias-T Inductor Characteristics Apply on Signal Quality
4. Importance of PoC Bias-T Filter Selection
2, Tool Functions
1. Circuits That Can Be Simulated
2. Criteria
3. Cables
4. Stray Capacitance Settings of the Board
5. Selection of Automatic Optimization
3, Tool Overview
1. User Interface
2. Details of each sections
4, Tool Use Cases
1. Use Case 1 (Automatic selection with “with cable” circuit)
Back to the table
2. Use Case 2 (Automatic selection with “without cable” circuit)of contents
3. Use Case 3 (Change optimization method and Compare)
4. Use Case 4 (Reselect L from inductor list)
5. Use Case 5 (Relax the set up condition after the result become “Fail”
6. Use Case 6 (Reduce parallel R)
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

28

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 1(Automatic selection with “with cable” circuit) 1/2
PoC Bias-T filter design for ADAS cameras (With cable)- Current : 300 mA- Ambient temperature : 105°C- Cable length : 5 m- Criteria : Reference criteria
Perform automatic selection(1) Select With cable/Reference criteria as Circuit & Criteria(3) Cable length: Input 5(2) Current: Input 300, Temperature: Select 105°C(4) Press the “Optimize” button

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

29https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 1(Automatic selection with “with cable” circuit)

2/2(5) Results are displayed
In this case
L1：LQW18CNR47J0Z
L2：LQW32FT470M0H
L3：LQH3NPZ680MME
FB：BLM18KG102SH1
are automatically selected

S21, S11, S21/S11, Z graphs displayed

Pass or Fail against selected
criteria, minimum margin value,
total DCR, and total area aredisplayed
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

30

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 2(Automatic selection with “without cable” circuit)

1/2

PoC Bias-T filter design for ADAS cameras (Without cable)- Current : 300 mA- Ambient temperature : 85°C
- Criteria : Reference criteria
Perform automatic selection(1) Select Without cable/Reference criteria as Circuit & Criteria(2) Current: Input 300, Temperature: Select 85°C

(3) Press the “Optimize” button

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

31https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 2(Automatic selection with “without cable” circuit)

2/2(4) Results are displayed
In this case
L1：LQW18CNR47J0Z
L2：LQW32FT100M0H
L3：LQH44PH151HPR
FB：BLM18KG102SH1
are automatically selected

S21, S11, S21/S11, Z graphs displayed

Pass or Fail against selected
criteria, minimum margin value,
total DCR, and total area aredisplayed
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

32

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 3(Change optimization method and Compare) 1/2

PoC Bias-T filter design for ADAS cameras (with cable)- Current :500 mA- Ambient temperature : 105°C- Cable length : 10 m
- Criteria : Reference criteria
Compare the results when “maximum margin” and “minimum size”
are selected as the "Optimization method “(1) Select With cable/Reference criteria as Circuit & Criteria(3) Cable length: Input 10(2) Current: Input 500, Temperature: Select 105°C*A message is displayed if thecurrent value before input issmaller than 500 mA.
Select the “Delete items that do
not meet the condition” option
and then click OK.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

33

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 3(Change optimization method and Compare) 2/2(4) Click the Optimize button with
Sim1 Optimization method: Maximize margin
Sim2 Optimization method: Minimize size(5) Results are displayed
In this case
For “Maximize margin”
L1 : LQW18CNR21J0Z
L2 : LQW32FT220M0H
L3： LQH44PH330MPR
For “Minimize size”
L1： BLM18EG181SH1
L2： LQW18CNR27J0Z
L3：LQW32FT220M0H
are automatically selected

Graphs, margin values, size images, total DCR
values, and total size values can be compared
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

34

Use Case 4(Reselect L from inductor list)

https://ds.murata.co.jp/bist/?lcid=en-us

1/3

PoC Bias-T filter design for ADAS cameras (without cable)- Current : 400mA- Ambient temperature :105℃- Criteria : Reference Criteria
Reselect the L1 element after automatic selection and compare.

(1) Select Without cable/Reference criteria as Circuit & Criteria(2) Current: Input 500, Temperature: Select 105°C(3) Press the “Optimize” button(4) Results are displayed
In this case
For “Maximize margin”
L1 : LQW18CNR39J0Z
L2 : LQW32FT4R7M0H
L3： LQH44PH330MPR
are selected
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

35

Use Case 4(Reselect L from inductor list)

https://ds.murata.co.jp/bist/?lcid=en-us

2/3(5) Copy product names selected in “Sim1”(6) Select “Sim2”(7) Attach the Sim1 part number by clicking Paste(8) Click “Select” of L1(9) Select an inductor
Change
LQW18CNR39J0Z to
BLM18HE152SH1

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

36

Use Case 4(Reselect L from inductor list)

https://ds.murata.co.jp/bist/?lcid=en-us

3/3(10) Results are displayed
Comparison of results when
LQW18CNR39J0Z or BLM18HE152SH1
is used for L1

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

37https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 5(Relax the set up condition after the result become “Fail”) 1/3
PoC Bias-T filter design for ADAS cameras (With cable)- Current : 400 mA- Ambient temperature : 125°C- Cable length : 15 m
- Criteria : Reference criteria
Relax the set up condition after the result become “Fail”(1) Select With cable/Reference criteria as Circuit & Criteria(3) Cable length: Input 15(2) Current: Input 400, Temperature: Select 125°C(4) Press the “Optimize” button(5)Result become “Fail”
In this case, since the temperature condition is 125 ° C and thecable length is 15 m, the condition is severe, so there is no
combination that passes the criteria.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

38https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 5(Relax the set up condition after the result become “Fail”) 2/3
ⅰ, Relax the temperature condition (125℃->105℃)(6) Relax the temperature from 125C to 105C
(7) Press the “Optimize” button(8)Results are displayed
In this case
L1: LQW18CNR33J0Z
L2: LQW32FT220M0H
L3: LQH44PH330MPR
FB1：BLM18KG102SH1
Are selected by relaxing
temperature condition andpass the criteria.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

39https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 5(Relax the set up condition after the result become “Fail”) 3/3

ⅱ, Relax the temperature condition (125℃->105℃)＋add element in series(6) Relax the temperature from 125C to 115C
(There is no combination that pass thecriteria just by relaxing at 115 ℃.)(8) Press the “Optimize” button(7)Select "Optim." as L4 status(Series elements number become 4pcs)(8)Results are displayed
In this case
L1: BLM18HE152SH1
L2: LQW32FT100M0H
L3: LQM21PH2R2NGC
L4： LQW32FT100M0H
Are selected by relaxing
temperature condition andpass the criteria
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

40

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 6 (Reduce parallel R) 1/2
PoC Bias-T filter design for ADAS cameras (Without cable)- Current : 400 mA- Ambient temperature : 105°C- Criteria : Reference criteria
Reduce parallel R(1) Select Without cable/Reference criteria as Circuit & Criteria(2) Current: Input 400, Temperature: Select 105°C(3) Press the “Optimize” button(4)Results are displayed
In this case
L1：LQW18CNR39J0Z
L2：LQW32FT2R7M0H
L3：LQH44PH330HPR
FB：BLM18KG102SH1
are automatically selectedCopyright © Murata Manufacturing Co., Ltd. All rights reserved.

41

https://ds.murata.co.jp/bist/?lcid=en-us

Use Case 6 (Reduce parallel R) 2/2(5) Select Sim2

(8) Press the “Optimize” button(7) Select “Maximize margin”
as optimization method(6) Delete the value of R1④Results are displayed
In this case
L1：BLM18HE152SH1
L2：LQW32FT2R7M0H
L3：LQH44PH470HPR
FB：BLM18KG102SH1
Are selected by removing
the R1(※) In some cases, selecting ferrite
beads for L1 can reduce theparallel resistance (R1) of L1.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

42

https://ds.murata.co.jp/bist/?lcid=en-us

End

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

43