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The TLC6A598 evaluation module (EVM) helps designers evaluate the operation and performance of the TLC6A598 8-Bit Shift Register designed for the high current multi-load application. The TLC6A598 device is a monolithic, high-voltage, high-current power 8-bit shift register designed for systems that require relatively high load power, such as LEDs. The device contains a built-in voltage clamp on the outputs for inductive transient protection. Power driver applications include relays, solenoids, and other high current or high voltage loads. Each open-drain DMOS transistor features an independent chopping current limiting circuit to prevent damage in the case of a short circuit.
The TLC6A598EVM provides an eight-channel relays control example solution. It is designed to operate with two supply power rails, one power rail for the TLC6A598 and another power rail for the relays. This evaluation board is designed to work with the USB2ANY board and USB2ANY Explore Software. See the TLC6A598 data sheet for more information about the digital communication.
The LP5860EVM kit is illustrated in Figure 1-1.
This design describes an application of the TLC6A598 as a relay controller using the specifications shown in Table 1-1. For applications with a different input voltage range or different output voltage and current, please refer to the TLC6A598 data sheet.
Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
---|---|---|---|---|---|
Input voltage range, VCC | 3 | 5.5 | V | ||
Input voltage range, VDD | 24 | V | |||
Relay | G5NB-1A-E D24 | 8.3 | mA |
This section describes the test setup for the evaluation of the TLC6A598EVM board. Table 2-1 shows the EVM connectors and test points.
Reference Designator | Function |
---|---|
J1 | VCC |
J2 | GND for VCC |
J3 | VDD |
J4 | GND for VDD |
J5 | USB2ANY Connector |
J6 | Outputs connector for TLC6A598 |
J7 | Outputs connector for Relays |
TP1 | Test point for VCC |
TP2 | Test Point for VDD |
TP3, TP4, TP5 | GND Test Point |
The following equipment are required for the test setup:
To evaluate the TLC6A598EVM board, the USB2ANY interface adapter provided by TI is recommended here. Please download and install the USB2ANY Explorer Software on the computer.
Figure 2-1 shows the test bench setup for the evaluation of the TLC6A598EVM board.
Set the input voltage power supply 1 to 5 V and the current limit to 0.3 A. Turn off the power supply 1. Connect the power supply 1 to the J1 and J2 connectors with the positive terminal of the supply connected to VCC (J1) and the negative terminal of the supply connected to GND (J2). Set the input voltage power supply 2 to 24 V and the current limit to 1 A. Turn off the power supply 2. Connect the power supply 2 to the J3 and J4 connectors, with the positive terminal of the supply connected to VDD (J3) and the negative terminal of the supply connected to GND (J4).
Connect the USB2ANY with Edge cable to J5 and connect USB2ANY to the PC with USB cable.
With above setup and connections completed, turn on the power supply 1 and 2. Then open the USB2ANY Explorer Software and the software will show as Figure 2-2.
Click the 'Select Interface' button and choose the 'GPIO' and 'SPI' as Figure 2-3 and click the 'Close' button.
Click the 'GPIO' button and configure the GPIO3 as Figure 2-4. If you cannot see the 'GPIO' button, please adjust the display scale of the PC to 100%.
Click the 'SPI' button and configure the SPI interface as Figure 2-5:
In the 'Write date' command window, write 'FF' and click 'Write/Read' button as Figure 2-6:
Then, the eight relays K1 to K8 will turn on and the eight Green LEDs D1 to D8 will turn on accordingly.
Please refer to the TLC6A598 data sheet for additional functional tests.