Part Number:TPS65400
Hi,
We are using TPS65400 in our design. Following are the specification.
1. Current Sharing B/W SW1 & SW2
Vin = 12V (Typ)
Vout = 1.8V (Typ) @ 6A Current Max
Enable pins of SW1 & SW2 are tied together & connected with the Microcontroller for the sequencing.
Similar way,
2. Current Sharing B/W SW3 & SW4
Vin = 12V (Typ)
Vout = 0.85V (Typ) @ 3.5A Current Max
Enable pins of SW3 & SW4 are tied together & connected with the Microcontroller for the sequencing.
Our requirement is to control the Vout 1 (1.8V) & Vout 2 (0.85V) using the Enables pins. Typical application is shown below.
In the TPS65400 page no 29, Sec 8.4.3, it is written that
"When SW1/SW2 pair output and/or SW3/SW4 pair output are shared, the responding pairs current sharing mode is enabled and the ENABLE_PIN_CONFIG is set to single ENABLE".
but we would like to control enable of each sharing pair using MCU. If a see default value of register ENABLE_PIN_CONFI G, the value if active enable that means we can control individual enables.
We do not want to use PMBus by as default hardware configuration.
Please clarify is our application approach is correct. Can we control enable of each pair using MCU?
Regards:
Rahul Sharma