Other Parts Discussed in Thread: TINA-TI, , INA225, TPS40140
Tool/software: TINA-TI or Spice Models
Hi,
I am designing a 3 phase synchronous buck DC/DC converter with 36 V input voltage and 24 V output voltage. The maximum output power is 5kW.
I downloaded TPS40090 TINA-TI Transient Reference Design Steady State and want to simulate the 3 phase buck converter by modifying the related parameter.
Here is my question:
1. According to the datasheet of TPS40090, for three-phase mode, PWM4 is connected to 5 V (BP5). Then how to connect CS4? Should CS4 be connected to the ground?
2. Since TPS40090 is a peak current mode controller, is it necessary to add a slope compensation circuit to eliminate the second harmonic oscillation?
3. Since the output voltage is too large for TPS40090, INA225 is adopted to sense the inductor DCR current. Does it have any influence on current -sharing?
Thank you!