Other Parts Discussed in Thread: TPS53622A, TPS53820
Hi
The CPU is C3508.
The current specification is as below:
| Power rail | TDC(A) | MAX(A) | |
| PVCCP | 4 | 4.5 | |
| VNN | 4.2 | 4.5 | |
| VCCSRAM | 2.5 | 3 | |
My solution is TPS53622A+CSD95410, but they can't meet Intel CPU spreadsheet Iout accuracy as below:
| C3508 | ||||
| Limit_standard | Load(A) | Upper Limit(A) | Lower Limit(A) | |
| VR Load | Tolerance | |||
| 0% | 100.0% | 0.00 | 0.000 | 0.000 |
| 5% | 94.0% | 0.23 | 0.446 | 0.014 |
| 10% | 47.0% | 0.45 | 0.662 | 0.239 |
| 15% | 28.25% | 0.68 | 0.872 | 0.488 |
| 20% | 9.5% | 0.90 | 0.986 | 0.815 |
| 25% | 8.75% | 1.13 | 1.229 | 1.031 |
| 30% | 8.0% | 1.35 | 1.458 | 1.242 |
| 35% | 7.50% | 1.58 | 1.699 | 1.462 |
| 40% | 7.0% | 1.80 | 1.926 | 1.674 |
| 45% | 6.75% | 2.03 | 2.167 | 1.893 |
| 50% | 6.5% | 2.25 | 2.396 | 2.104 |
| 55% | 6.25% | 2.48 | 2.635 | 2.325 |
| 60% | 6.0% | 2.70 | 2.862 | 2.538 |
| 65% | 6.00% | 2.93 | 3.106 | 2.754 |
| 70% | 6.0% | 3.15 | 3.339 | 2.961 |
| 75% | 6.00% | 3.38 | 3.583 | 3.177 |
| 80% | 6.0% | 3.60 | 3.816 | 3.384 |
| 85% | 6.00% | 3.83 | 4.060 | 3.600 |
| 90% | 6.0% | 4.05 | 4.293 | 3.807 |
| 95% | 6.00% | 4.28 | 4.537 | 4.023 |
| 100% | 6.0% | 4.50 | 4.770 | 4.365 |
The Iout is very small.
What solution can meet this Iout accuracy requirement?
Thanks
BR
Hank
