Keysight Technologies B1505A Manuale utente

Keysight Technologies B1505A

Power Device Analyzer/Curve Tracer

Step by Step Measurement

Handbook for Power BJT

Agilent B1505A Power evice Analyzer/Curve Tracer is a powerful tool for measur-

ing and characterizing power devices.

This power bipolar junction transistor (BJT) measurement handbook covers how to

measure the typical power BJT parameters found in power BJT specifications or

data sheet as shown in table 1. Each test is covered with step by step instructions of

cable connection to the power BJT and the parameter setting of the test, and you

can easily setup the test and execute it by just following the guide.

The step by step measurement handbook covers;

●

A cable connection from the instrument to the device terminal,

●

A test setup of the measurement parameters and the data extraction scheme,

●

A test execution and analysis on EasyEXPERT software which is resident in

B1505A and provides all the control of the B1505A.

A customized Application Test Library is created for testing the specifications intro-

duced in this measurement handbook. They can be downloaded from the Agilent

web site and you can use them by importing to your B1505A. They include the Appli-

cation Test library and the test definitions, and you can start measurements right

away.

Measuring power devices sometimes requires special knowledge of both the device

and the measuring instruments.

For example, the high voltage breakdown test sometimes requires a series resistor

connected between the High voltage SMU (HVSMU) and the collector of power BJT

to measure the breakdown characteristics or to protect from a damage of the device

from an unusual device breakdown.

The connection between SMU and the power BJT requires a different technique

than the power MOSFET because the base current of the power BJT is relatively

higher, and the voltage drop by the connection cable and the contact cannot be ig-

nored.

You can perform accurate measurement by following the steps of setup and the

measurement instructions of this measurement handbook.

Introduction

Typical power BJT Parameter Symbol Unit Measurement*

Typical Measurable Range of B1 0 A

Collector Current Ic A Ic-Vce -40 A to 40 A

(Minimum 10 fA resolution) *

C Current gain h

Ic-Ib 1 ~ 10000 *

Collector Emitter Sustaining Voltage V

CE(SUS)

Collector Emitter Breakdown Voltage V

(BR)CEO

Collector-Emitter Cut-off Current I

CEO

A Ic-Vceo -8 mA to 8 mA

(Minimum 10 fA resolution) *

Collector-Base Voltage V

CBO

V Ic-Vcbo -3,000 V to 3,000 V

(Minimum 200 µV resolution) *

Collector-Base Cut-off Current I

CBO

A Ic-Vcbo -8 mA to 8 mA

(Minimum 10 fA resolution) *

Emitter-Base Voltage V

EBO

V Ie-Vebo -20 V to 20 V

(Minimum 2 µV resolution) *

Emitter Cut-off Current I

EBO

A Ie-Vebo -1 A to 1 A

(Minimum 10 fA resolution) *

Collector-Emitter Saturation Voltage V

CE(sat)

V Vce(sat)-Ic -20 V to 20 V

(Minimum 2 µV resolution) *

Base-Emitter Saturation Voltage V

BE(sat)

V Vce(sat)-Ic -20 V to 20 V

(Minimum 2 µV resolution) *

Base Emitter ON Voltage V

BE(on)

V Ic-Vbe -20 V to 20 V

(Minimum 2 µV resolution) *

Collector-Emitter Voltage (Base-Emitter

short) V

CES

V Ic-Vces -3,000 V to 3,000 V

(Minimum 200 µV resolution) *

Output Capacitance Cob pF C-V Better than 1% at C<10 nF *

V Ic-Vceo -3,000 V to 3,000 V

(Minimum 200 µV resolution) *

Note: *1: Measurement used for extracting the parameter.

*2: With two HCSMUs and requires ual HCSMU Combination Adapter.

*3: Rule of thumb (Example (Ic/Ib): 20 A/20 A ~ 1 A/100 µA)

*4: HVSMU. Maximum 4 mA at 3 kV, 8 mA at 1,500 V.

*5: HVSMU

*6: HPSMU and HCSMU. 2 µV resolution at 2 V range.

*7: HPSMU at 20 V range

*8: Max. 3,000 V C bias with High-voltage Bias T adapter.

Table 1. Typical DC and Capacitance parameters of power BJT and the compatibility of the B1 0 A.

Chapter 1. Basic Knowledge of the B1 0 A

1-1. Agilent B1 0 A Power Device Analyzer/Curve Tracer

1-2. Agilent N12 9A Power Device Fixture

1-3. EasyEXPERT Software

● Application Test

● Classic Test

● Tracer Test

Chapter 2. Preparation for the Measurements

2-1. Before using the B1 0 A

2-2. Instruments and Accessories used in the measurement examples

2-3. Devices used in the measurement examples

2-4. Cable Connection between the B1 0 A and the N12 9A Test Fixture

2- . Starting the B1 0 A

Chapter 3. Measurements of Data Sheet Specifications of Power BJTs

3-1. Application Test Example

3-1-1. Ic - Vce measurement

3-1-2. hFE and Vbe(on) versus Ic measurement

3-1-3. Vce(sat) and Vbe(sat) versus Ic measurement

3-1-4. Vce(sus) or V(BR)ceo, and Iceo-Vce measurement

A. Without 100 kΩ collector series resistor

B. With 100 kΩ collector series resistor

3-1-5. BVcbo and Icbo-Vcb measurement

3-1-6. BVebo and Iebo-Veb measurement

3-1-7. BVces and Ic-Vces measurement

3-1-8. Cob-Vc measurement

3-2. Classic Test and Tracer Test Example

3-2-1. Ic-Vce Tracer Test

3-2-2. Vce(sat) and Vbe(sat) versus Ic Classic Test

3-2-3. 100 kΩ resistor precision measurement for Vce(sus) Application Test

Table of Contents

Appendix

Appendix 1. Supplemental Information for Preparation

A1-1. ownload the example file-set from the Agilent web site

A1-2. How to return to Workspace management page

Appendix 2. Preparation for the Measurements using the Module Selector

A2-1. Instruments and Accessories used in the measurement examples

A2-2. Cable Connection between the B1505A and the N1259A Test Fixture

A2-3. Connection inside the N1259A Test Fixture

Appendix 3. Configuration for 40 A output

A3-1. Instruments and Accessories used for 40 A configuration

A3-2. Cable Connection between the B1505A and the N1259A Test Fixture

A3-3. EasyEXPERT configuration before starting a measurement

Appendix 4. Before returning the demo-B1 0 A

A4-1. Saving the measured data

A4-2. eleting the workspace and measured data

This chapter provides basic B1505A related informa-

tion that is better to know before you proceed this

material.

Agilent B1505A Power evice Analyzer / Curve

Tracer is designed for measuring present power de-

vices. B1505A uses the EasyEXPERT software, a

specially-designed Microsoft Windows® application

program.

The B1505A can measure wide range of power de-

vices from 10 fA to 40 A and 2 µV to 3,000 V with

3,000 V CV measurement features.

The EasyEXPERT software, which is resident on the

B1505A, provides an intuitive and flexible data man-

agement and analysis environment.

Chapter 1. Basic Knowledge of the B1 0 A

B1505A has 10 module slots, which support the following modules

B1510A High Power SMU (HPSMU) 10 fA~1 A/2 µV~200 V

B1512A High Current SMU (HCSMU) 10 pA~1 A/200 nV~40V ( C) or 10 pA~20

A/200 nV~20 V (Pulse)

B1513A High Voltage SMU (HVSMU) 10 fA~4 mA/200 µV~3000 V or 10 fA~8

mA/200 µV~1500 V

B1520A Multi Frequency CMU (MFCMU) 1 fF~10 nF @ 1 MHz for power BJT pa-

rameters with 0~3000 V C bias by using High Voltage Bias-Tee adapter.

Output and measurement range of each module are visually shown in figure 1-1.

1-1. Agilent B1 0 A Power Device Analyzer/Curve Tracer

Output and measurement range of each module are visually shown in figure 1-1.

40V-40V

-20A

-10A

10A

20A

-1A

Pulse

-20V 20V

Voltage

Current

(B) HCSMU Output and Measurement range

200V

100V

-200V -100V

00mA

12 mA

-1A

20V

40V

Current

Voltage

(A) HPSMU Output and Measurement range

(C ) HVSMU Output and Measurement range

3000V

1 00V

-3000V -1 00V

- 4mA

- 8mA

8mA

4mA

1 00V Range

3000V Range

Current

Voltage

Figures 1-1. Output and measurement range.

Agilent N1259A Power evice Fixture shown in fig-

ure 1-2 is used for measuring packaged power de-

vices, It can basically covers the B1505A`s maximum

output range; 40 A and 3 kV.

We use N1259A option 020 High Voltage Bias-Tee

and option 022 100 kΩ resistor (optional) shown in

figure 1-3.

The module selector option 300 is handled in the

appendix section.

We do not use options 033 1 kΩ resistor in BJT ap-

plication.

Option 020 High Voltage Bias-Tee is required if you

perform a CV measurement with more than 25 V C

bias, and it expands the C bias range up to 3 kV

with HVSMU. You can perform the CV measurement

without Option 020 if the requirement of maximum

bias voltage is less than 25 V which can be output

from MFCMU-self.

Option 022 100 kΩ resistor is basically used by in-

serting a 100 kΩ resistor in series between the

HVSMU and the collector of the power BJT as

shown in Figure 1-4.

Figures 1-2. Agilent N12 9A Test Fixture

Opt 033

Opt 300

(Output)

Opt 020

Opt 022

Figure 1-3. N12 9A Opt 020, 022, 033 and 300

1 00kΩ

ΩΩ

Ω

GNDU

HVSMU

Protective resistor

Figure 1-4. Option 022 Series R inserted between the collector and the collector HVSMU.

1-2. Agilent N12 9A Power Device Fixture

Note:

We are not using Option 300 Module Selector which

is convenient for automatically switching the meas-

urement resources between the HVSMU, HCSMU and

HPSMU without manually re-connecting the cables

between the power BJT and each SMU. Figure 1-5

shows a simplified image of Module Selector con-

nected to the collector of the power BJT.

We can simplify the test setup in the example by not

using Option 300 and it becomes more versatile for

many users. If you have option 300 installed in the

N1259A, then you can simply use this option by prop-

erly interpreting the step by step instruction for the

collector connection.

However the instructions for using the module selec-

tor are covered in the appendix section.

Figure 1- . Simplified connection diagram using

N12 9A Option 300 Module Selector

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