View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000869 | K18X001.00 SKB SWAN | HW | public | 2020-08-03 20:57 | 2021-12-23 19:33 |
| Reporter | (ALTech) Lonnie Kim | Assigned To | Due Date | 2020-08-07 21:50 | |
| Priority | high | Severity | s2-severe | Reproducibility | sometimes |
| Status | closed | Resolution | fixed | ||
| Summary | 0000869: [SWAN]Request power block schematics | ||||
| Description | Dear Sean Please provide power block schematics of BFX-UA300. I need to all power components from DC jack to DC/DC and LDOs. 1. Block: Power blocks included DC/DC converters, LDOs, Load swtiches, inductors, beads 2. Reason to need - Power block analysis 3. Needed information - Schematics - Datasheet(DC/DC converters, LDOs, Load swtiches, inductors, beads) Best regards Lonnie Kim | ||||
| Tags | No tags attached. | ||||
| Attach Tags | |||||
| User List |
(ALTech) SH Son , (ALTech) SY Yoon , (ALTech) Wooshin Kang , (HW) Sean Chiang , (HW) Tom Lee |
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Dear Sean I provided Power Supply Tolerance analysis template. Please fill out yellow section at each worksheet. Please let me know if you have anyquestion Best regards Lonnie Kim |
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Hi Fu-Chiang, Please take care for the worksheet that request by Lonnie Kim. Regards, Sean |
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Hi Lonnie, We try to fill the table but only can fill the DC/DC power, for TLV75525 and SY8824 power IC, they do not have Ra and Rb and Vref to feedback to LDO. So we cannot complete this table. 1.Tol. analysis(HW1.2)_PI: Lack TLV75525 and SY8824 power IC. 2. PI Simulation Result: The copper thickness for us is difficult to calculate, and some power is separated to other sub PCBA. The PI simulation is distortion. 3. FB Tol by Temp: Only MPS replied can try to do the test, but TLV75525 and SY8824 cannot do the test. MPS power IC vendor needs more time to do it. Please see the attached file. Also, may we know what the reason is for this power simulation? Thank you. |
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Dear Fu-chiang Young Okay. TLV75525 and SY8824 power ICs don't have Ra and Rb because they are fixed and programmable type power supplies. I updated modified version. Please update final version. * SY8824: Programmable DC/DC converter, so it is not depent with Ra and Rb * TLV75525: Fixed LDO, so it is not depent with Ra and Rb * TPS51206: Fixed LDO, so it is not depent with Ra and Rb In addition, this type of analysis is for more detail power analysis calculation tool considered resistors variance , feedback accuracy, line DC drop. Best regards Lonnie Kim |
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Hi Lonnie, MPS has updated the data, please see the attached file. I update to another sheet, named 3. FB Tol by Temp-MPS. Thank you. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | New Issue | |
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | Status | new => assigned |
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | Assigned To | => (HW) Sean Chiang |
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) SH Son | |
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) SY Yoon | |
| 2020-08-03 20:57 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) Wooshin Kang | |
| 2020-08-10 14:33 | (ALTech) Lonnie Kim | File Added: Power Supply Tolerance Analysis_SWAN_EVT_20200810.xlsx | |
| 2020-08-10 14:33 | (ALTech) Lonnie Kim | Note Added: 0003984 | |
| 2020-08-13 18:34 | (HW) Sean Chiang | Assigned To | (HW) Sean Chiang => (RD) Fu-chiang Young |
| 2020-08-13 21:38 | (HW) Sean Chiang | Issue Monitored: (HW) Sean Chiang | |
| 2020-08-13 21:38 | (HW) Sean Chiang | Issue Monitored: (HW) Tom Lee | |
| 2020-08-13 21:38 | (HW) Sean Chiang | Note Added: 0004050 | |
| 2020-08-21 10:02 |
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File Added: Power Supply Tolerance Analysis_SWAN_EVT_20200810-2.xlsx | |
| 2020-08-21 10:02 |
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Note Added: 0004103 | |
| 2020-08-21 14:03 | (ALTech) Lonnie Kim | File Added: Power Supply Tolerance Analysis_SWAN_EVT_20200810-2-2.xlsx | |
| 2020-08-21 14:03 | (ALTech) Lonnie Kim | Note Added: 0004106 | |
| 2020-08-21 15:13 |
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File Added: Power Supply Tolerance Analysis_SWAN_EVT_20200821-V1.xlsx | |
| 2020-08-21 15:13 |
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Note Added: 0004108 | |
| 2020-11-13 11:18 | (SW) Jacky Chiang | Project | T99X171.00 SKB Eagle => K18X001.00 SKB SWAN |
| 2021-12-23 19:33 | (HW) Sean Chiang | Status | assigned => closed |
| 2021-12-23 19:33 | (HW) Sean Chiang | Resolution | open => fixed |
