uln2003lv 7-channelrelay and inductive load sink driver evm

User's GuideSLRU001A–April 2012–Revised April 2012

ULN2003LV 7-Channel Relay and Inductive Load SinkDriver EVM

1 Overview

The ULN2003LVEVM is a 7-Channel Relay and Inductive Load Sink Driver evaluation module thatdemonstrates the ULN2003LVDR integrated circuit from Texas Instruments (TI).The ULN2003LVDR is a high-performance peripheral driver designed to drive loads of many typesincluding: relays, stepper motors, lamps, and light emitting diodes.The EVM is configured with seven push buttons that supply input to the ULN2003 driver and sevenrelays are driven by the ULN2003LV outputs. A four terminal block can be connected to external powersupplies to provide input and relay power. All of the ULN2003LV input and output pins are accessiblefor external connection.

1.1 ULN2003EVM Features• Seven numbered push buttons control input for device testing.

• Seven numbered light emitting diodes indicate relay contact closure.

• Three 0.1” spaced post connector ports that allow access to all input pins, output pins, and relaycontacts.

• Three open locations, per channel, on the circuit board for user supplied components.

• Onboard relay loads that can be disconnected by removing surface mounted 0Ω resistors.

• A large device clearance area that allows the use of small profile temperature forcing equipment.

Table 1. ULN2003EVM Specification

Key Parameters

Input Supply Voltage: 0V – 5.5V

Relay Supply Voltage: 0V – 4.5V (0 V to 8 V with relays disconnected)

Output Current: 0mA to 140mA

Number of Channels: 7

Onboard Load: Seven AGQ20003 relays

AGQ20003 specs• Nominal coil resistance is 64.2Ω• Nominal coil current is 46.7mA

• Nominal coil voltage is 3V

• Pickup voltage < 75% Nominal

• Dropout voltage > 10% Nominal

• Maximum coil voltage 150% Nominal

CAUTION: Applying voltages above the limitations given in Table 1 may cause permanent damage toyour hardware.

Gerber (layout) files are available at www.ti.com.

The EVM includes mating connectors for input, output, and contact pins.

1SLRU001A–April 2012–Revised April 2012 ULN2003LV 7-Channel Relay and Inductive Load Sink Driver EVMSubmit Documentation Feedback

Copyright © 2012, Texas Instruments Incorporated

http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLRU001A

Quick Setup Guide www.ti.com

1.2 PCB Key Map

Physical structure for the ULN2003EVM is illustrated in Figure 1.

Figure 1. Physical Structure for the ULN2003EVM (Approximate Layout)

2 Quick Setup Guide

This section describes the setup to quickly check the functionality of ULN2003LVEVM.

2.1 Electrostatic Discharge Warning

Many of the components on the ULN2003EVM are susceptible to damage by electrostatic discharge(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handlingthe EVM, including the use of a grounded wrist strap at an approved ESD workstation.

CAUTION: Failure to observe ESD handling procedures may result in damage to EVM components.

2 ULN2003LV 7-Channel Relay and Inductive Load Sink Driver EVM SLRU001A–April 2012–Revised April 2012Submit Documentation Feedback


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www.ti.com Quick Setup Guide

2.2 Unpacking the EVMAfter opening the ULN2003EVM package, check to ensure that the following items are included:

• 1 pc. ULN2003LVEVM board using one ULN2003LVDR

• 3 pc. Eight pin insulation displacement connectors that accept AWG 22 insulated wire.

2.3 Power Supply Setup

A 3.3V power supply capable of 500 mA of current is required.

Connect the positive power supply lead to the “Input Supply” on TB1-1 and also connect it to the “RelaySupply” on TB1-4. Connect the negative power supply lead to either of the two ground connections onTB1-2 or TB1-3.

It is important to connect the power supply correctly because opposite supply polarity will damagethe EVM.

Turn the power supply on. At this time, the EVM light emitting diodes (LEDS) should be off and no currentshould be flowing from the power supply. The ULN2003LV consumes no power when all seven channelsare off.

Press the pushbuttons labeled IN1 through IN7 one at a time. When pressed the corresponding relay willclick as the contacts engage and the LED will illuminate.

Releasing a pushbutton will disengage the corresponding relay contacts and extinguish the LED.

If all seven buttons operate as previously described, then the ULN2003LVEVM passes functional testing.

Figure 2. Quick Setup



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TB1

Relay Supply – 4

Ground – 3

Ground – 2

Input Supply – 1

C3 0.1µF

C2 0.1µF

C1

470µF+

IN1-7

J1 - Inputpin 1 - 7

J1 - Inputpin 8

R1-7DNI

IN1-7

ULN2003LV1 of 7

Channels

300K

GND

OUT1 - 7

COM

C21-27 DNI

R21-R27 DNI

0Ω

R41-R47

D1

R51-R57 10K R31-R37

pin 8J2 - Output

J3 - Contactpins 1 - 7

J2 - Outputpins 1 - 7

Shared

EVM Theory and Operation www.ti.com

3 EVM Theory and Operation

The following single channel schematic is representative of the seven identical driver channels.

Figure 3. Single Channel Schematic

The ULV2003LVEVM is designed to accept an “Input Supply” on TB1-1 with a voltage range of 1.8V to5.5V and a “Relay Supply” on TB1-4 with a voltage range ideally set to 3.3V ±10%, but will still operatewith a minimum voltage of 2.5V (70% of 3V plus 0.4V) and a maximum voltage of 4.5V (150% of 3V).

When none of the buttons are pressed, the ULN2003LV inputs will be open circuit and the internalresistors in the ULN2003LV will ensure zero volts on the inputs. With the inputs low, the ULN2003LVoutput pins will set to a high impedance state; therefore, no current will flow through the relay coils. Therelay contact will not be engaged and the voltage on the J3-Contact pins 1 to 7 will be pulled up to therelay supply voltage by a 10kΩ resistor on the PCB.

Pressing one of the input buttons, labeled IN1 to IN7, will apply the input voltage supply on TB1-1 to thecorresponding input pin on the ULN2003LV. The internal resistor on the ULN2003 input pin will draw asmall current proportional to the input voltage. The nominal current is input voltage divided by 300kΩ, itcan also be expressed as the ratio, 3.3µA/V. The NMOS switch inside the ULN2003LV turns on providinga low resistance path from output to ground. This completes the circuit and current flows from the relaysupply through the AGQ20003 relay coil and through the ULN2003LV output switch to ground and finallyback through the relay supply return lead. The relay coil current will engage the relay contacts. The relaycontacts will short the corresponding J3 “contact” pin to ground. It will also complete the correspondingLED circuit and the LED will illuminate.



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www.ti.com EVM Theory and Operation

Releasing one of the input buttons, labeled IN1 to IN7, will remove the input voltage from thecorresponding input pin on the ULN2003LV. The internal resistor on the ULN2003 input pin will decreasethe input voltage to zero. The NMOS switch inside the ULN2003LV turns off breaking the current path forthe relay coil. Since the coil is an inductor, the current cannot change in zero time. The coil voltage willchange polarity resulting in a ULN2003LV output voltage that is greater than the relay supply voltage. Thiswill forward bias the diode inside the ULN2003LV passing current back to the relay supply voltage. Thiscurrent will continue until the stored coil energy is depleted. The relay contacts will disengage and theshort on the J3-Contact pin will be removed and the pin voltage will increase back to the relay supplyvoltage. The LED circuit will be open, thus extinguishing the LED.

The voltage on the output pins is always available on the J2-Output connector pins 1-7. Pin 8 is connectedto the COM pin on the ULN2003LV and the relay supply voltage on TB1 pin 4. The J2-Output connectorcan be used measure the output voltage. It can also be used to add additional loads to the ULN2003LVoutput pins. The series resistance between the J2-output connector and the ULN2002LV is approximately20 mΩ. The onboard AGQ2003 relay coils can be removed from the ULV2003LV by removing the seven0Ω resistors at locations R41 to R47.

The voltage on the input pins is always available on the J1-Input connector pins 1-7. Pin 8 is connected tothe GND pin on the ULN2003LV and the ground voltage on TB1 pins 2 & 3. The J1-Input connector canbe used measure the input voltage. It can also be used to inject external signals onto the ULN2003LVinput pins.

Three user supplied components, per channel, can be added if needed. All three circuit board footprintsare SMD 0603 sized. The first location, R1 to R7, allows adding a resistor from each input to ground. Thesecond, R21 to R27, and third location, C21 to C27, are in series with each other and parallel with theAGQ20003 relay coils.

The terminal block, TB1, provides power for the input pushbuttons and relay coils. When directlycontrolling the inputs using the J1-Input connector, the input source on TB1 pin1 may be disconnected.

The ULN2003 EVM board has seven identical channels. The single channel schematic is easier to readthen the complete schematic. The ULN2003LV single model functional diagram is enclosed by dottedlines. The input pin has a 300kΩ resistor that keeps the driver off when no input is disconnected or put into a high impedance state. The NMOS transistor sinks to a shared ground connection when the inputvoltage is applied. When the load is inductive and the NMOS turns off, the output voltage will increasebeyond the relay supply voltage and inductor current will continue to flow though the free wheeling diodeto the COM pin until the inductor is discharged.

Resistors R41 through R47 can be removed to isolate the output from the relay coils when external loador automated test equipment is provided through the J2-Output connector.

The relay is an AGQ20003 relay with a 64.2Ω, 3V, 46.7mA nominal coil. The pull-in voltage is less than2.25V (3V × 75%) and the drop out voltage is greater than 0.3V. The maximum coil voltage is 4.5V (3V ×150%).

The relay contact when open will allow the J3-Contact pin to rise to the Relay supply voltage. The voltageon J3-Contact connector can be measured by any high impedance (>100kΩ) measuring device. When thecontacts close the J2-Contact pin will be pulled down to ground potential.

The ULN2003LV output pins 16 to 10 are connected to relays RL1 to RL7 and J2-Output port pins 1 -7(pin 8 is relay coil power sense).

The ULN2003LV COM, pin 9, is connected to the relay supply on TB1. This pin connects to the cathodesof free wheeling diodes for each output. It provides a discharge path when the inductive load is turned off.

The inputs can be fully controlled by external test equipment using the J1-Input Port. The outputs can bemeasured by external test equipment using the J2-Output Port. If relay supply voltage, ULN2003LV COMpin, exceeds 4.5V or full external control is required, then the relay coils should be disconnected byremoving the zero ohm resistors labeled R41 to R47.

The ULN2003EVM has open 0603 foot prints for input resistors to ground as R11 to R17, coil waveshaping resistor and capacitors as R31 to R37 and C31 to C37. The ULN2003 does not require thesecomponents.



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ULN2003EVM Performance Testing Using Lab Equipment www.ti.com

Increasing output load using onboard relays: Shorting two or more of the J2 pins 1-7 (output port) willparallel the ULN2003LV outputs and relay coils. By activate just one of the inputs for the shorted outputchannels will cause a single output to drive multiple relay coil loads. Two coils typically uses 93.4mA andthree coils typically use 140mA.

4 ULN2003EVM Performance Testing Using Lab Equipment

Datasheet electrical characterization parameters can be measured using the following test setups. Setupsfor both standard EVM boards and modified EVM boards that have R41 to R47 removed to disconnect theonboard relay loads. It is acceptable to keep some channels “standard” (R4x installed) and other channels“modified” (R4x removed). The capacitors (470µF & 0.1µF) on the ULN2003LV COM pin are connectedregardless of R41 to R47 presence. Therefore the charging, discharging, and leakages of the capacitorsmust be considered. Each output pin has an internal diode to the COM pin. Testing for channel 1 will bedescribed; test other channels by using a different pin on the J1(input) and J2(output) connectors.

Channel Tested J1(Input)-pin J2(Output)-pin

CH 1 J1–1 J2–1

CH 2 J1–2 J2–2

CH 3 J1–3 J2–3

CH 4 J1–4 J2–4

CH 5 J1–5 J2–5

CH 6 J1–6 J2–6

CH 7 J1–7 J2–7

Relay supply is connected to TB1 pin 4; the Relay supply sense line can also be connected to TB1-pin4.Alternatively the sense line can be connected to J2 pin 8. The relay supply is the same node as theULN2003LV COM (pin 9).

Ground power and ground sense connection can be made to TB1 pins 2 and 3. An alternative groundsense can be made at J1 pin 8.

Warning: All tests that supply current should be limited to the data sheet limit of 140mA. Input pinvoltage should be limited to 5.5V and output pin voltage should be limited to 8V.



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I

3.3V

TB1-4

J2-1OUTCOM

1/7ULN2003LV

IN

GND

TB1-2

J1-1

SweepVoltage

0 to 1.5V

MeasureCurrent

CurrentLimit 10 mA

0.01

0.1

1

10

100

1000

10000

I-

Ou

tpu

t C

urr

en

t -

AO

m

0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3

V - Input Voltage - VI

www.ti.com ULN2003EVM Performance Testing Using Lab Equipment

4.1 Input parameter VI(on) and VI(off) Channel 1 Test Setup and Typical Results

Board setup: Sweep input voltage on J1-1; Set Output J2-1 and Relay Supply to 3.3V, measure outputcurrent on J2-1 [current clamp on measurement range of 10mA is recommended].

Note: any difference between voltage on J2-1 and Relay Supply(TB1-4) will affect low current accuracywith Standard board.

Figure 4. VI(on) and VI(off) Schematic

Figure 5. VI(on, off) = IOS(3.3V) vs Vin



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I

3.3 V

TB1-4

J2-1OUTCOM

1/7ULN2003LV

IN

GND

TB1-2

J1-1

SweepVoltage

0 to 5.5V

MeasureCurrent

0.5 1V - Input Voltage - VI

0 1.5 2 2.5 3 3.5 4 4.5 5 5.5

I-

Inp

ut

Cu

rre

nt

-A

Im

0

2

4

6

8

10

12

14

16

18

20


4.2 Input Parameter II(on) Channel 1 Test Setup and Typical Results

Input current is a function of input voltage alone. The output load impedance and termination voltage haveno impact on the results.

Board setup: Sweep input voltage on J1-1. Measure input current on J1-1. Optionally, Relay supply can beconnected to 3.3V.

Figure 6. II(on) Schematic

Figure 7. II(on) = IIN vs VIN



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I

3.3 V

TB1-4

J2-1OUT

COM

1/7

ULN2003LVIN

GND

TB1-2

J1-1

Measure

Current

TB1-3


4.3 Input Parameter II(off) Channel 1 Test Setup and Typical Results

Input current with zero input voltage will be very low. A pico-amp meter is recommended. This is a signalpoint test.

Standard board setup: Set input voltage on J1-1 to 0V. Measure input current on J1-1. Optionally, outputJ2-1 and Relay Supply can be set to 3.3V.

Modified board setup: Sweep CH1 voltage on J1-1; Set Output J2-1 and Relay Supply to 3.3V, measurecurrent on J1-1. The return lead of the pico-amp meter must be at board ground potential.

Figure 8. II(off) Schematic



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TB1-4

J2-1OUT

COM1/7

ULN2003LVIN

GND

TB1-2

J1-1

1.8 V,2.5 V,3.3 V,5.0 V

OPEN

VMeasureVoltage

TB-3

SweepCurrent

0 to 140 mAKelvinConnection

0

50

100

150

200

250

300

350

400

450

500

V-

Ou

tpu

t V

olt

ag

e -

mV

O

0 20 40 60 80 100 120 140I - Output Current - mAO

V = 1.8 VIN

V = 2.5 VIN

V = 3.3 VIN

V = 5 VIN


4.4 Output Parameter VOL Channel 1 Test Setup and Typical Results

This parameter was called collector emitter saturation voltage on the original ULN2003 device.

The data sheet has specifications for input voltages of 3.3V and 5V.

Board setup: Sweep output current on J2-1. Set desired input voltage on J1-1 [3.3V, 5V, and othervoltages]. Disconnect the relay supply on TB1-4. Measure output voltage on J2-1 (kelvin connections atJ2-1 and ground are highly recommended for accurate results).

Figure 9. VOL Schematic

Figure 10. VOL vs IOL



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I

TB1-4

J2-1OUTCOM

1/7ULN2003LV

IN

GND

TB1-2

J1-1

SweepVoltage

0 V to 5.5 V

MeasureCurrent

0.4 V

TB1-3

OPEN

SENSE

SENSE

I-

Ou

tpu

t C

urr

en

t -

mA

O

0

20

40

60

80

100

120

140

160

180

200


0 1.5 2 2.5 3 3.5 4 4.5 5 5.5


4.5 Output Parameter IOUT(on) Channel 1 Test Setup and Typical Results

Board setup: Sweep input voltage on J1-1. Set output voltage on J2-1 to 0.4V. Disconnect the relay supplyon TB1-4. Measure output current on J2-1 (sense connections at J2-1 and ground are highlyrecommended to keep 0.4V on the EVM regardless of line losses in wires and current meter).

Figure 11. IOUT(on) Schematic

Figure 12. IOUT(on) = IOS(400mV) vs VIN



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3.3V

TB1-4

J2-1OUT

COM

1/7

ULN2003LVIN

GND

TB1-2

J1-1

Pulse Generator

100 kHz

10% Duty Cycle

3.3 V

0V

TE

E

Rising Edge

Slope

Trigger

50 Ω

J1-8

GND

10x

Scope Probe

“Input”

COM

50 Ω

10x

Scope Probe

“Output”

J2-8

-0.3

0

0.3

0.6

0.9

1.2

1.5

1.8

2.1

2.4

2.7

3

3.3

3.6

Vo

ltag

e -

V

INPUT

3V3(TPHL)

-10 10 30 50 70Time - nS

0 20 40 60


4.6 Switching Parameter tPHL 3.3V 50Ω Channel 1 Test Setup and Typical Results

Board setup: The ULN2003LV and ULN2003EVM are primarily designed for slow responding loads likerelays, stepper motors, and DC lab equipment; however, the ULN2003LV rise/fall times and propagationdelays are short. Therefore line termination and short wires are important for signal quality. The waveformbelow uses a 50 ohm cable “T” tapped within 3 cm of the J1-Input connector and terminated at theoscilloscope set to 50 ohm input impedance. This input is used as the scope trigger. A locally grounded10X scope probe is used to measure the input signal and the same probe was used to measure the outputon J2-1. A pull up resistor of 50Ω is connected between the output (J2-1) and Relay supply (J2-8). Setscope trigger for rising edge. Pulse generator is 10% duty cycle 100kHz 3.3V logic level signal.

Figure 13. TPHL Schematic

Figure 14. TPHL 3.3V 50Ω pullup = 13nS



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3.3V

TB1-4

J2-1OUT

COM

1/7

ULN2003LVIN

GND

TB1-2

J1-1

Pulse Generator

100 kHz

10% Duty Cycle

3.3 V

0V

TE

E

Falling Edge

Slope

Trigger

50 Ω

J1-8

GND

10x

Scope Probe

“Input”

COM

50 Ω

10x

Scope Probe

“Output”

J2-8

INPUT

-0.3

0

0.3

0.6

0.9

1.2

1.5

1.8

2.1

2.4

2.7

3

3.3

3.6

-10 10 30 50 70 90

Vo

lta

ge

- V

Time - nS

3V3(TPLH)


4.7 Switching Parameter tPLH 3.3V 50Ω Channel 1 Test Setup and Typical Results

Board setup: The ULN2003LV and ULN2003EVM are primarily designed for slow responding loads likerelays, stepper motors, and DC lab equipment; however, the ULN2003LV rise/fall times and propagationdelays are quite short. Therefore line termination and short wires are important for signal quality. Thewaveform below uses a 50 ohm cable “T” tapped within 3 cm of the J1-Input connector and terminated atthe oscilloscope set to 50 ohm input impedance. This input is used as the scope trigger. A locallygrounded 10X scope probe is used to measure the input signal and the same probe was used to measurethe output on J2-1. A pull up resistor of 50Ω is connected between the output (J2-1) and Relay supply (J2-8). Set scope trigger for falling edge. Pulse generator is 10% duty cycle 100kHz 3.3V logic level signal.

Figure 15. TPLH Schematic

Figure 16. TPHL 3.3V 50Ω pullup = 36nS



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5.0 V

TB1-4

J2-1OUT

COM

1/7

ULN2003LVIN

GND

TB1-2

J1-1

Pulse Generator

100 kHz

10% Duty Cycle

5.0 V

0 V

TE

E

Rising Edge

Slope

Trigger

50 Ω

J1-8

GND

10x

Scope Probe

“Input”

COM

1000 Ω

10x

Scope Probe

“Output”

J2-8

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V

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

-0.5

INPUT

5V(TPHL)

Time - nS-5 0 5 10 15 20 25 30 35 40


4.8 Switching Parameter tPHL 5V 1000Ω Channel 1 Test Setup and Typical Results

Board setup: The ULN2003LV and ULN2003EVM are primarily designed for slow responding loads likerelays, stepper motors, and DC lab equipment; however, the ULN2003LV rise/fall times and propagationdelays are quite short. Therefore line termination and short wires are important for signal quality. Thewaveform below uses a 50 ohm cable “T” tapped within 3 cm of the J1-Input connector and terminated atthe oscilloscope set to 50 ohm input impedance. This input is used as the scope trigger. A locallygrounded 10X scope probe is used to measure the input signal and the same probe was used to measurethe output on J2-1. A pull up resistor of 1000Ω is connected between the output (J2-1) and Relay supply(J2-8). Set scope trigger for rising edge. Pulse generator is 10% duty cycle 100kHz 5V logic level signal.

Figure 17. TPHL Schematic

Figure 18. TPHL 5V 1KΩ pullup = 7nS



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5.0 V

TB1-4

J2-1OUT

COM

1/7

ULN2003LVIN

GND

TB1-2

J1-1

Pulse Generator

100 kHz

10% Duty Cycle

5.0 V

0 V

TE

E

Falling Edge

Slope

Trigger

50 Ω

J1-8

GND

10x

Scope Probe

“Input”

COM

1000 Ω

10x

Scope Probe

“Output”

J2-8

INPUT

5V(TPLH)

Vo

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e -

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5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

-0.550

Time - nS-50 150 250 350 450


4.9 Switching Parameter tPLH 5V 1000Ω channel 1 Test Setup and Typical Results

Board setup: The ULN2003LV and ULN2003EVM are primarily designed for slow responding loads likerelays, stepper motors, and DC lab equipment; however, the ULN2003LV rise/fall times and propagationdelays are quite short. Therefore line termination and short wires are important for signal quality. Thewaveform below uses a 50 ohm cable “T” tapped within 3 cm of the J1-Input connector and terminated atthe oscilloscope set to 50 ohm input impedance. This input is used as the scope trigger. A locallygrounded 10X scope probe is used to measure the input signal and the same probe was used to measurethe output on J2-1. A pull up resistor of 1000Ω is connected between the output (J2-1) and Relay supply(J2-8). Set scope trigger for falling edge. Pulse generator is 10% duty cycle 100kHz 5V logic level signal.

Figure 19. TPLH Schematic

Figure 20. TPLH 5V 1KΩ pullup = 90nS



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0 1.5 2 2.5 3 3.5 4 4.5 5 5.5250

260

270

280

290

300

310

320

330

340

350

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4.10 Switching Parameter RIN Channel 1 Test Setup and Typical Results.

The data to calculate RIN, the DC input resistance, was recorded during the II(on) test. The inputresistance is simply input voltage divided by input current.

Figure 21. RIN = VIN/IIN vs VIN



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TB1-4

J2-1OUT

COM1/7

ULN2003LVIN

GND

TB1-2

J1-1OPEN

V

MeasureVoltage

SweepCurrent

0 to 140 mA

0 20 40 60 80 100 120 140

Output Diode Current - mA

650

700

750

800

850

900

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olt

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4.11 Free-wheeling Diode Parameter VF channel 1 Test Setup and Typical Results

Board setup: Sweep output current on J2-1. Set Relay supply voltage to 0V. On standard boards the Xaxis (output current) will need to be compensated for coil current flow. The real diode current isapproximately X-VF/64.2Ω. Measure output current on J2-1 (Kelvin connections at J2-1 and relay supplyare highly recommended for accurate results).

Figure 22. VF Schematic

Figure 23. VF = Diode(V) vs Diode(I)



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7

P8

8

P9

9P

10

10

P1

11

1P

12

12

P1

31

3P

14

14

P1

51

5P

16

16

P1

71

7P

18

18

R1 RDNI

R1 RDNI

MT

G4

MT

G4

MT

G3

MT

G3

IN5

SP

ST

IN5

SP

ST

14

23

MT

G2

MT

G2

TB

1

TE

RM

BLO

CK

TB

1

TE

RM

BLO

CK1 2 3 4

C2

0.1

UF

C2

0.1

UF

MT

G1

MT

G1

C3

0.1

UF

C3

0.1

UF

R4 RDNI

R4 RDNI

J2

8 H

EA

DE

RJ2

8 H

EA

DE

R

1 2 3 4 5 6 7 8

R10 0

R10 0

R6 RDNI

R6 RDNI

R11

0R

11

0

IN1

SP

ST

IN1

SP

ST

14

23

R8 RDNI

R8 RDNI

R2 RDNI

R2 RDNI

IN7

SP

ST

IN7

SP

ST

14

23

IN2

SP

ST

IN2

SP

ST

14

23

IN3

SP

ST

IN3

SP

ST

14

23

IN4

SP

ST

IN4

SP

ST

14

23

IN6

SP

ST

IN6

SP

ST

14

23

J1

8 H

EA

DE

R

J1

8 H

EA

DE

R1 2 3 4 5 6 7 8


Figure 24. Full Schematic



http://www.ti.com


Evaluation Board/Kit Important Notice

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSESONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must haveelectronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be completein terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmentalmeasures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit doesnot fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling(WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.

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