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User's Guide
SLRU005–February 2013
TPL7407L7-Channel Relay and Inductive Load Sink Driver
EVM
1 Overview
The TPL7407LEVM is a 7-Channel Relay and Inductive Load Sink Driver evaluation module that
demonstrates the TPL7407LDR integrated circuit from Texas Instruments (TI).
The TPL7407LDR is a high-performance peripheral driver designed to drive loads of many types
including: relays, stepper motors, lamps, and light emitting diodes.
The EVM is configured with seven push buttons that supply input to the TPL7407L driver and seven
relays are driven by the TPL7407Loutputs. A four terminal block can be connected to external power
supplies to provide input and relay power. All of the TPL7407Linput and output pins are accessible for
external connection.
1.1 TPL7407LEVM 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 relay
contacts.
• 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. TPL7407LEVM Specification
Key Parameters
Input Supply Voltage: 0V – 5.5V
Relay Supply Voltage: 8.5V – 24V
Output Current: 0mA to 500mA
Number of Channels: 7
Onboard Load: Seven OMRON G5NB relays
G5NB specs
• Nominal coil resistance is 2,880Ω
• Nominal coil current is 8.3mA
• Nominal coil voltage is 24V
• Pickup voltage < 75% Nominal
• Dropout voltage > 10% Nominal
• Maximum coil voltage 180% Nominal
CAUTION: Applying voltages above the limitations given in Table 1 may cause permanent damage to
your hardware.
Gerber (layout) files are available at www.ti.com.
The EVM includes mating connectors for input, output, and contact pins.
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SLRU005–February 2013 TPL7407L7-Channel Relay and Inductive Load Sink Driver EVM
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