Other Parts Discussed in Thread: TLV9102, TPS61391,
Hello there,
I have a few questions regarding the TPS65132 - I have described my goals and questions follow.
Aim: To generate (i) dual rail voltage supply of +/-5V for two summing op-amps TLV9102 and, (ii) supply an input of +5V to a boost converter (TPS61391) that will generate upto +75V with a negative charge pump to -75V (with a load current of 2mA).
Questions:
- What is the pre-programmed output current of the positive terminal? Is it always 200mA (as mentioned in the LDO section of the datasheet?)
- The pre-programmed output current of the negative terminal of the TPS65132 is 40mA and of the TPS65132S is 80mA, is this correct? And these can be programmed to be higher (80mA, 150mA appropriately)?
- What is the output voltage level of the REG pin on the TPS65132? What is the output current capability of that pin? Why is there a separate pin?
- Should I use the REG pin as the input to the boost converter (as per the specs given in the aim), or the VPOS?
- Is there a way to hardwire +/-5V with maximum output currents on both VPOS and VNEG, and avoid using the I2C?
- Can I drive ENN and ENP together from the same GPIO pin of the SoC? Are there any current requirements?
I would also like to send my schematic for review, so please share a contact or email address if available. Thank you.
Ashwati