cupoftea
Advanced Member level 5
Hi,
Do you agree that equation (2) page 6 of the UCC38084D datasheet is nonsense.
UCC38084 datasheet
8-Pin Current Mode Push-Pull PWM ControllersWith Programmable Slope Compensation datasheet (Rev. E)
All they need to say is that ….
1…ramp current (ISLOPE) has a maximum of 150uA.
2…Ramp current (ISLOPE) is 5 x RSET current,
3….RSET pin has a maximum of 1.5V.
4……then use Ohms Law to get your ramp voltage by doing I(SLOPE) x R(series)
5....Remembering that CS threshold is 0.52V
Would you agree?
Do you agree that equation (2) page 6 of the UCC38084D datasheet is nonsense.
UCC38084 datasheet
8-Pin Current Mode Push-Pull PWM ControllersWith Programmable Slope Compensation datasheet (Rev. E)
All they need to say is that ….
1…ramp current (ISLOPE) has a maximum of 150uA.
2…Ramp current (ISLOPE) is 5 x RSET current,
3….RSET pin has a maximum of 1.5V.
4……then use Ohms Law to get your ramp voltage by doing I(SLOPE) x R(series)
5....Remembering that CS threshold is 0.52V
Would you agree?