AN42 |
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| APPLICATION NOTE | |
| L2 |
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VCC | 2.6∝H |
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C4 | C1 |
| C2 | C3 | C5 |
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0.1∝F |
| 1000∝F | 1000∝F | 1000∝F | 0.1∝F |
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| DS2 |
| C8 | C9 |
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| 1N5817 |
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| 0.1∝F | 0.1∝F |
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| M1 |
| M2 |
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| 11 |
| 10 | C12 |
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| 2SK1388 |
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| 12 |
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| 9 | 1∝F |
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R7 |
| 13 |
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| 8 | 2SK1388 |
| L1 | RSENSE |
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| 14 |
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| 7 |
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| VO | |
10K |
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| 1.3∝H |
| ∝F | ∝F | |||
| 15 |
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| 6 | C6 |
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| 8mΩ | ∝F | ||||
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| RC5040 | 4.7∝F |
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| 1500 | 1500 | 1500 | |||
VREF |
| 16 |
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| 5 |
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| 17 |
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| 4 | M3 |
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C7 |
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| DS1 |
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| 18 |
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| 3 |
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| 2SK1388 |
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| C13 | C14 | C15 | ||
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| 19 |
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| 2 |
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0.1∝F |
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GND |
| 20 |
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| 1 |
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| CEXT |
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| 39pF |
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VID3 | R1 |
| 10K |
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| VCC |
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VID2 | R2 |
| 10K |
| R6 |
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| 10K |
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| R3 |
| 10K |
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VID1 |
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| PWRGD |
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VID0 | R4 |
| 10K |
| VCC | C11 |
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| 0.22∝F |
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OUTEN |
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| R5 |
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| 10K |
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| C10 |
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| 0.1∝F |
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Figure 4. Synchronous
| L2 |
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VCC | 2.6∝H |
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C4 | C1 | C2 | C3 | C5 |
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0.1∝F |
| 1000∝F | 1000∝F | 1000∝F | 0.1∝F |
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| DS2 | C8 |
| C9 |
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| 1N5817 |
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| ∝ | 0.1∝F |
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| 0.1 | F |
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| M2 |
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| C12 | M1 |
| 2SK1388 |
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| 1∝F |
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| 2SK1388 |
| L1 |
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| 9 |
| 8 |
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| RSENSE |
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| R7 |
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| 10 |
| 7 |
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| VO | |
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| 1.3∝H |
| 1500∝F |
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| 10K | 11 |
| 6 | C6 |
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| 8mΩ | 1500∝F | 1500∝F | ||
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VREF |
| 12 | RC5042 | 5 | 4.7∝F |
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| 13 | 4 |
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| C7 | 14 |
| 3 |
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| DS1 |
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| C13 | C14 | C15 |
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| 0.1∝F | 15 |
| 2 |
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| MBR1545CT |
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GND |
| 16 |
| 1 |
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| CEXT |
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| 39pF |
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| VID3 | R1 | 10K |
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| VCC |
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| VID2 | R2 | 10K |
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| R6 |
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| 10K |
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| R3 | 10K |
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| VID1 |
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| PWRGD |
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| VID0 | R4 | 10K |
| VCC |
| C11 |
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| C10 |
| 0.22∝F |
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| 0.1∝F |
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Figure 5.
6
