Other Parts Discussed in Thread: LM25010
Hello,
I am using LM25010 DC to DC converter IC in one of our board.
in efficiency i seeing different behavior at low current mode. efficiency of the SMPS is less at low current. is that any specific reason why it measuring low. and is their any improvement possible?
| supply through SMPS | direct 5 Volt supply at inductor output | |||||||||||||
| Vin in volt | Input current in mA | light color | On time in µSec | Mode of operation | switching frequency in KHz | %DC | input power in Watts | Vin | current in mA | output power in Watts | Efficiency % | |||
| Ron : 886KOhms Inductor : 1mH250mA Capacitor : 220µF |
24 | 14 | No light | 4.65 | Discontinuous mode | 24.2 | 12.5 | 0.336 | 5 | 26 | 0.13 | 39% | ||
| 24 | 17 | green | 4.65 | Continuous mode | 49.8 | 22.6 | 0.408 | 5 | 53 | 0.265 | 65% | |||
| 24 | 24 | yellow | 4.65 | Continuous mode | 50.9 | 23.4 | 0.576 | 5 | 81 | 0.405 | 70% | |||
| 16 | 14 | No light | 7.3 | Discontinuous mode | 28.6 | 20.6 | 0.224 | 58% | ||||||
| 16 | 21 | green | 7.3 | Continuous mode | 48.1 | 34.1 | 0.336 | 79% | ||||||
| 16 | 32 | yellow | 7.3 | Continuous mode | 48.8 | 34.6 | 0.512 | 79% | ||||||
Best Regards,
S.Suresh.
