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| SSI | |
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| ERP2U Power Supply Design Guide, V1.0 | |||
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| Table 19: Turn On/Off Timing |
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| Item | Description | MIN |
| MAX | UNITS |
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| Tsb_on_delay | Delay from AC being applied to 5 VSB being |
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| 1500 | ms | |
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| within regulation. |
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| T ac_on_delay | Delay from AC being applied to all output voltages |
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| 2500 | ms | |
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| being within regulation. |
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| Tvout_holdup | Time all output voltages stay within regulation | 18 |
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| ms | |
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| after loss of AC. |
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| Tpwok_holdup | Delay from loss of AC to deassertion of PWOK. | 17 |
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| ms | |
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| Tpson_on_delay | Delay from PSON# active to output voltages within | 5 |
| 400 | ms | |
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| regulation limits. |
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| T pson_pwok | Delay from PSON# deactive to PWOK being |
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| 50 | ms | |
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| deasserted. |
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| Tpwok_on | Delay from output voltages within regulation limits | 200 |
| 1000 | ms | |
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| to PWOK asserted at turn on. |
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| T pwok_off | Delay from PWOK deasserted to output voltages | 1 |
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| ms | |
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| (3.3 V, 5 V, 12 V, |
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| limits. |
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| Tpwok_low | Duration of PWOK being in the deasserted state | 100 |
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| ms | |
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| during an off/on cycle using AC or the PSON# |
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| signal. |
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| Tsb_vout | Delay from 5 VSB being in regulation to O/Ps | 50 |
| 1000 | ms | |
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| being in regulation at AC turn on. |
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STATUS
Recommended
Item | Description | MIN | MAX | UNITS |
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Tvout_holdup | Time all output voltages stay within regulation | 21 |
| ms |
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| after loss of AC. |
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Tpwok_holdup | Delay from loss of AC to deassertion of PWOK. | 20 |
| ms |
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Tsb_holdup | Time 5VSB output voltage stays within regulation | 70 |
| ms | |
| after loss of AC. |
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- 22 -
