Datasheet
Table Of Contents
- Figure 1. EVAL6460 demonstration board
- 1 The L6460 main features
- 2 EVAL6460 board description
- 3 The EVAL6460 controlled by the EVAL_IBU-STR7
- Figure 5. EVAL_IBU-STR7 board
- Figure 6. EVAL_IBU-STR7 schematic board
- 3.1 Board connection and configuration
- 3.2 Starting flexSPIN evaluation software
- Figure 13. FlexSPIN evaluation software - start window
- 3.2.1 How to turn-on the VswDrv regulator
- 3.2.2 How to enable the DC1 and DC2 output bridges
- 3.2.3 How to enable the DC3 and DC4 output bridges
- 3.2.4 How to assign and read a GPIO
- 3.2.5 How to read and clear an undervoltage event
- 3.2.6 How to manage the interrupt controller
- 3.2.7 How to put the device into "low power" condition and awaken it
- 3.2.8 How to generate a PWM
- 3.2.9 How to close the low voltage power switch
- 3.2.10 How to measure an input voltage using A-D converter
- 3.2.11 How to use the digital comparator
- 3.2.12 How to configure and program the device via the SPI sequencer
- 3.2.13 How to read the device temperature
- 3.2.14 How to work in master - slave configuration
- 4 Revision history
AN3097 The EVAL6460 controlled by the EVAL_IBU-STR7
Doc ID 16599 Rev 2 19/34
By ticking the auto-check boxes, you can configure the operation mode of the single half
bridge outputs. The options available are:
● '0': Hold the output low (low side power on)
● '1': Hold the output high (high side power on)
● HiZ: high impedance status (high and low side off)
● PWM_1-0: the output is alternatively in status '0' or '1'
● PWM_HiZ-0: the output is alternatively in status 'HiZ' or '0'
● PWM_1-HiZ: the output is alternatively in status '1' or 'HiZ'
In the right-hand side of the window you can set other bridge parameters (see Figure 19):
1. PWM source selection (internal or external)
2. PWM duty cycle
3. Overcurrent protection threshold
4. Overcurrent offtime selection
Figure 19. Bridge 1 and 2 configuration
Finally to enable the bridges, click on "Enable motors 1 and 2" and move the PWM sliders to
a percentage different to the 0 default value.
To put the bridges in parallel it is necessary to tick the "motors 1 and 2 paralleled" auto-
check box: Output DC1+ and DC2+ is shorted together and so DC1- and DC2- also. The
resulting bridge uses the driving logic of bridge 1 as mentioned above.
3.2.3 How to enable the DC3 and DC4 output bridges
During the startup procedure the bridges are in high impedance status and after they can be
enabled through the SPI.
In the first software window click the L6460 device and then the "Bridge 3" or "Bridge 4"
button, the following window appears (Figure 20).