DFX-8500
2.2.1 Power Supply Overview
Figure 2-14 shows a block diagram of the C204 PSB/PSE board.
Power
SW.
AC Inlet
AC Source
CN1 |
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| Surge Cut |
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| (at Power On) |
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L | Fuse |
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| Smoothing |
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| Input Filter | Rectifier |
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N | Circuit |
| Circuit | Circuit |
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| T1 |
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| +37V |
| +37V Line |
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| Smoothing |
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| (VP1/VP2) | ||
| Switching |
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| Circuit |
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| Over Current | GP1 | GP1 | ||
| 1/2 |
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| GP | Protection |
| GP2 | GP2 | |
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| Current Limit |
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| CL |
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| Power Down |
| Monitoring |
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| PC101 | Control |
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| PD |
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| Constant |
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| DRERR |
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| PC102 | Voltage |
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| SD |
| Control |
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| VP3 Down |
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| Over Voltage |
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| Monitoring |
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| +5V Regulator |
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| PC1 | Protection |
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| Circuit |
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| +5V | ||
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| T2 |
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| Overcurrent |
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| GL | |
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| Protection |
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| +5V Regulator |
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| +37V Line |
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| +37V |
| Switching |
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| Smoothing |
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| (VP3) | ||
| 2/2 |
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| Circuit |
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| GP3 | |
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| GL |
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| Constant | Current Limit |
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| Voltage | Abnormal |
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| GP3 | ||
| PC201 | Monitoring |
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| Control | Current | Fan Driver |
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| (VP1/VP2) |
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| FANDR | |
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| Monitoring |
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| GP |
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CN3
CN4
CN2
CN5
Figure 2-14. Power Supply Board Block Diagram
Rev. B |
