Shutdown; Component Selection; Drv601Evm; Power-Up/Down Sequence - Texas Instruments DRV601EVM User Manual

www.ti.com
2.3 Power Supply Setup
To power up the EVM, one power supply is needed. The power supply is connected to the EVM using a
2-pin, 2,54-mm pin header, J10.
Description
Power supply
Applying voltages above the limitations given in
damage to your hardware.
3

Shutdown

For minimum click and pop during power on and power off, the shutdown pin should be kept low. The
preferred power-up/down sequence is shown in
4

Component Selection

4.1 Charge Pump
The charge pump flying capacitor, C13, serves to transfer charge during the generation of the negative
supply voltage. The PVSS capacitor must be at least equal to the charge pump capacitor in order to allow
maximum charge transfer. Low ESR capacitors are an ideal selection, and a value of 1 µF is typical.
Capacitor values smaller than 1 µF can be used, but the maximum output can be reduced. It is therefore
recommended to validate the design with thorough testing.
SLOU215 – January 2008
Submit Documentation Feedback
Table 2. Recommended Supply Voltage
Voltage Limitations
1.8 V to 4.5 V 0.3 A
DVDD
SHUTDOWN
> 50 s
m
Figure 4. Power-Up/Down Sequence
Current Requirement
CAUTION
Table 2
Figure 4.
> 50 s
m
Cable
may cause permanent

DRV601EVM

Shutdown
5