Texas Instruments TPL7407L7 User Manual Download Page 6 | Manualshive

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Texas Instruments TPL7407L7 User Manual Download Page 6

I

24V

Current

Limit 10 mA

TB1-4

Measure

Current

J1-1

IN

1/7

COM

OUT

J2-1

TPL7407L

Sweep

Voltage

0 to 1.5V

GND

TB1-2

TPL7407LEVM Performance Testing Using Lab Equipment

www.ti.com

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 24V, measure output
current 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 accuracy

with Standard board.

Figure 3. VI(on) and VI(off) Schematic

6

TPL7407L7-Channel Relay and Inductive Load Sink Driver EVM

SLRU005 – February 2013

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Copyright © 2013, Texas Instruments Incorporated

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Summary of Contents for TPL7407L7

Page 1: ...t connector ports that allow access to all input pins output pins and relay contacts Three open locations per channel on the circuit board for user supplied components Onboard relay loads that can be...

Page 2: ...observe proper ESD handling precautions when unpacking and handling the EVM including the use of a grounded wrist strap at an approved ESD workstation CAUTION Failure to observe ESD handling procedure...

Page 3: ...e off and no current should be flowing from the power supply The TPL7407L consumes no power when all seven channels are off Press the pushbuttons labeled IN1 through IN7 one at a time When pressed the...

Page 4: ...nnector can be used measure the output voltage It can also be used to add additional loads to the TPL7407Loutput pins The series resistance between the J2 output connector and the TPL7407L is approxim...

Page 5: ...g Lab Equipment Datasheet electrical characterization parameters can be measured using the following test setups Setups for both standard EVM boards and modified EVM boards that have R41 to R47 remove...

Page 6: ...ep input voltage on J1 1 Set Output J2 1 and Relay Supply to 24V measure output current on J2 1 current clamp on measurement range of 10mA is recommended Note any difference between voltage on J2 1 an...

Page 7: ...current is a function of input voltage alone The output load impedance and termination voltage have no impact on the results Board setup Sweep input voltage on J1 1 Measure input current on J1 1 Opti...

Page 8: ...test Standard board setup Set input voltage on J1 1 to 0V Measure input current on J1 1 Optionally output J2 1 and Relay Supply can be set to 24V Modified board setup Sweep CH1 voltage on J1 1 Set Ou...

Page 9: ...e original TPL7407L device The data sheet has specifications for input voltages of 1 8V 5V Board setup Sweep output current on J2 1 Set desired input voltage on J1 1 1 8V 5V and other voltages Disconn...

Page 10: ...ent IDS mA VOL at Various Temperatures 25C 70C 105C 40C TPL7407LEVM Performance Testing Using Lab Equipment www ti com Figure 7 VOL vs IOL 10 TPL7407L7 Channel Relay and Inductive Load Sink Driver EVM...

Page 11: ...etup Sweep input voltage on J1 1 Set output voltage on J2 1 to 0 4V Disconnect the relay supply on TB1 4 Measure output current on J2 1 sense connections at J2 1 and ground are highly recommended to k...

Page 12: ...the output J2 1 and Relay supply J2 8 Set scope trigger for rising edge Pulse generator is 10 duty cycle 100kHz 3 3V logic level signal Figure 9 TPHL Schematic Switching Parameter tPLH 3 3V 50 Channel...

Page 13: ...Testing Using Lab Equipment Figure 10 TPLH Schematic 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 t...

Page 14: ...et Relay supply voltage to 0V On standard boards the X axis output current will need to be compensated for coil current flow The real diode current is approximately X VF 2 880 Measure output current o...

Page 15: ...1 600 IF A VF V Fly back Diode Forward Voltage www ti com TPL7407LEVM Performance Testing Using Lab Equipment Figure 12 VF Diode V vs Diode I 15 SLRU005 February 2013 TPL7407L7 Channel Relay and Induc...

Page 16: ...P14 14 P15 15 P16 16 P17 17 P18 18 R1 R DNI R1 R DNI MTG4 MTG4 MTG3 MTG3 IN5 SPST IN5 SPST 1 4 2 3 MTG2 MTG2 TB1 TERM BLOCK TB1 TERM BLOCK 1 2 3 4 C2 0 1UF C2 0 1UF MTG1 MTG1 C3 0 1UF C3 0 1UF R4 R D...

Page 17: ...o handling the product This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI a...

Page 18: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

Page 19: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TPL7407LEVM...

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