Part Number: TPS22976 I am attempting to use a TPS22976 to achieve power supply sequencing. The TPS22976 seems to be acting more like a leaky valve than an actual switch. It is allowing significant current to flow through, even when it is off. This is causing…
Part Number: LM25184-Q1 Other Parts Discussed in Thread: LM25184 I am designing a flyback converter using LM25184-Q1. During efficiency calculation, I am not able to figure out how to calculate the switching loss of the MOSFET integrated in the IC. I…
Part Number: CSD19501KCS Other Parts Discussed in Thread: MOTOR-DRIVE-FET-LOSS-CALC , Hi, In the MOTOR-DRIVE-FET-LOSS-CALC Excel sheet, the equations tab contains an equation to calculate RDS(on) with temperature. But I am unable to understand what ΔRDS…
Part Number: TPS22959 Other Parts Discussed in Thread: BQ21040 Can the TPS22959 load switch be used for Disconnecting the Load While Charging a single lithium ion battery using bq21040.
in another question I was advised to use the CHG/ pin on the bq21040…
Hello Sanjana,
See below losses for the HS/LS FET you have mentioned in your response above.
Please see the calculations based on the MOSFET parameters in the attached.
Forum_mar5_design_calcs dsb edits MOSFET parameters added.xlsm
Please see application…
Part Number: DRV8461 Hello guys,
One of my customers is considering using DRV8461 for their new products.
They have the following questions about switching loss calculation as the follows. Could you please give me your reply?
Q1. 30kHz is used as PWM switching…
Part Number: TPS48110Q1EVM Hi,
I am using the TPS48110Q1EVM board with 24.6Vin/12A capable power supply at the input and an electronic load at the output.
When the electronic load is set to just 0.1A load settings and is enabled it is very difficult to…
Part Number: TPS22810-Q1 Hi,
I'm currently using the TPS22810TDBVRQ1 for switching the power supply of a battery operated device, but I need to provide up to 3.5-4 Amps at times. the TPS22810TDBVRQ1 Imax is 2A so i need a replacement with very low Iq…
Part Number: TIDA-00349 Other Parts Discussed in Thread: TIDA-010018 hi team,
what is the power loss when with no load in such work conditions?
1. Vin=4.5V, Vo=5V;
2. Vin=4.5V, Vo=10V.
Part Number: LM5145DESIGN-CALC Other Parts Discussed in Thread: LM5145 Hello team,
I have a question about LM5145 design calculator.
MOSFET loss curve doesn't change when I change Qrr value of Low side FET. Only efficiency curve is changing by the parameter…