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rigidpatches [2019/09/09 13:50]
jfduval
rigidpatches [2020/04/02 17:29]
jfduval
Line 8: Line 8:
   * Board turns off as soon as you command some motor current: wrong I2t settings.   * Board turns off as soon as you command some motor current: wrong I2t settings.
  
-===== In-rush current ​=====+===== Damaged TPS2111 ===== 
 + 
 +Failure to follow the instruction on [[dev|Testing with Real Hardware: Important Safety Warnings]] can lead to motor current flowing in the USB connector. When that happens, the TPS2111 blows. To prevent this, always use an isolated USB adapter. If it happened, the solution is to replace the chip. 
 + 
 +===== Replacement components ===== 
 + 
 +  * Fuse: [[https://​www.digikey.com/​product-detail/​en/​bel-fuse-inc/​SMM-10/​507-1949-1-ND/​5466721|SMM 10]] or [[https://​www.digikey.com/​product-detail/​en/​bel-fuse-inc/​SMM-15/​507-1950-1-ND/​5466722|SMM 15]] 
 +  * [[https://​www.digikey.com/​products/​en?​keywords=296-16936-1-ND|TPS2111]] 
 +  * 510k resistor: any 0402 resistor will do. Value is not critical, 500k or 520k could be used. 
 +  * 10nF: many references could be used. Ex.: [[https://​www.digikey.com/​product-detail/​en/​vishay-bc-components/​A103K15X7RK5TAA/​1221PHCT-ND/​2356857|A103K15X7RK5TAA]] 
 +  * [[https://​www.digikey.com/​products/​en?​keywords=ATP304-TL-HOSCT-ND|ATP304]] 
 + 
 +===== Legacy ===== 
 + 
 +==== In-rush current ====
  
 **Patch:** the ATP304'​s gate resistor has to be replaced. It was 0 ohm, it needs to be 510k.  **Patch:** the ATP304'​s gate resistor has to be replaced. It was 0 ohm, it needs to be 510k. 
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   * Rigid 0.2B, 2.0+: integrated, no changes needed.   * Rigid 0.2B, 2.0+: integrated, no changes needed.
  
-===== Self-turn-on ​=====+==== Self-turn-on ====
  
 **Patch:** Add 10nF between the gate and source of the ATP304 MOSFET. There is no footprint, solder a ceramic axial cap across the component'​s legs. **Patch:** Add 10nF between the gate and source of the ATP304 MOSFET. There is no footprint, solder a ceramic axial cap across the component'​s legs.
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   * Rigid 0.1, 0.2 and 1.0: add capacitor.   * Rigid 0.1, 0.2 and 1.0: add capacitor.
   * Rigid 0.2B, 2.0+: integrated, no changes needed.   * Rigid 0.2B, 2.0+: integrated, no changes needed.
- 
-===== Damaged TPS2111 ===== 
- 
-Failure to follow the instruction on [[dev|Testing with Real Hardware: Important Safety Warnings]] can lead to motor current flowing in the USB connector. When that happens, the TPS2111 blows. To prevent this, always use an isolated USB adapter. If it happened, the solution is to replace the chip. 
- 
-===== Replacement components ===== 
- 
-  * Fuse: [[https://​www.digikey.com/​product-detail/​en/​bel-fuse-inc/​SMM-10/​507-1949-1-ND/​5466721|SMM 10]] or [[https://​www.digikey.com/​product-detail/​en/​bel-fuse-inc/​SMM-15/​507-1950-1-ND/​5466722|SMM 15]] 
-  * [[https://​www.digikey.com/​products/​en?​keywords=296-16936-1-ND|TPS2111]] 
-  * 510k resistor: any 0402 resistor will do. Value is not critical, 500k or 520k could be used. 
-  * 10nF: many references could be used. Ex.: [[https://​www.digikey.com/​product-detail/​en/​vishay-bc-components/​A103K15X7RK5TAA/​1221PHCT-ND/​2356857|A103K15X7RK5TAA]] 
-  * [[https://​www.digikey.com/​products/​en?​keywords=ATP304-TL-HOSCT-ND|ATP304]] 
- 
- 
rigidpatches.txt · Last modified: 2020/04/02 17:29 by jfduval