• TPS40304: Figure 18 R8 value

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Hi, Ref Page 21/39(SLUS964B) , the calculated value of RCS is 7.1Kohm which is R8 in Figure 18. May I ask why in Figure 18, RCS(R8) is 4.02Kohm? Why is this value chosen and how to get this value? Looking forward to your reply…

  • over 7 years ago
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• TPS40304: Current Limit Changes with varying input voltages

  

  Eric Fu51

  Part Number: TPS40304 Other Parts Discussed in Thread: CSD17304Q3 , Hi, I am noticing a significant change in the current limit of my TPS40304 circuit when I vary the input voltage. I am using MOSFETs CSD17304Q3 for both the High-Side and Low-Side. My output…

  • over 7 years ago
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• TPS40304: 8.2.2.2.10 Short-Circuit Protection (R11)

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Hi, Reference Pg 21/39, section 8.2.2.2.10 Short-Circuit Protection(R11) as seen below: Queries: Q1)Where can I find R11 in Figure 18.TPS40304 Design Example Schematic? Q2)Where is Rcs located in Figure18? Thank you, Angie

  • over 7 years ago
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Answered

• TPS40304: VDD and VIN_Power_Stage are different - how does this affect the Over Current functionality?

  

  Mark Pearson

  Resolved

  Part Number: TPS40304 Other Parts Discussed in Thread: LM27403 My customer has a scenario where the VDD and VIN_Power_Stage are different - how does this affect the Over Current functionality? They tell me that they are having problems with the way the…

  • Resolved

  • over 6 years ago
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• TPS40304: Formula to calculate the components values

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Hi , I could not find the formula to calculate for the components' values as outlined in Figure 18. TPS40304 Design Example Schematic(SLUS964B-Nov2009-Revised May2015). Could you please provide me the formulae for the following…

  • over 7 years ago
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• TPS40304: What is the formula to calculate Iripple?

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Dear Sir, Reference Pg19/39 of TPS40304, may I know what is the formula to calculate the I RIPPLE (i.e. 6A) ? Quote: Selecting a standard 300-nH inductor value, solve for I RIPPLE = 6A. Thank you, Angie

  • over 7 years ago
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• TPS40304: How is Itran(max) value calculated or obtained?

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Hi, Ref SLUS964B, I would like to find out how is Itran(max) value calculated or obtained for the following 3 applications as seen on Pg15, Pg20 and Pg24.

  • over 7 years ago
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• TPS40304: How is the value of RCS(R8) chosen

  

  Angie Neo

  TI Thinks Resolved

  Part Number: TPS40304 Hi, Can someone help me to understand why the value of 4.02Kohm is chosen instead of using the calculated value i.e. 7.1 Kohm? Ref Page 21/39(SLUS964B) , the calculated value of RCS is 7.1Kohm which is R8 in Figure 18. May I ask…

  • over 7 years ago
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• TPS40304: How to realiaze OCP based on R(ds) current sensing

  

  Zhipeng Zheng

  TI Thinks Resolved

  Part Number: TPS40304 TPS40304 has R(ds) current sensing. The voltage of SW is negetive when low side FET is turned on, because the current is flow from source to drain. But the voltage of OC is positive. Why does it can do over current project?

  • over 7 years ago
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• TPS40304: EVM schematic(.dsn) file request

  

  Yang Ken

  Part Number: TPS40304 Hello Sir, Could you please help to provide the Orcad(.dsn) file of TPS40304EVM? Thanks Ken Y

  • over 7 years ago
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