SSI
ERP2U Power Supply Design Guide, V2.31
| Table 25: Turn On/Off Timing | |
Item | Description | MIN |
Tsb_on_delay | Delay from AC being applied to 5 VSB being |
|
| within regulation. |
|
|
|
|
T ac_on_delay | Delay from AC being applied to all output voltages |
|
| being within regulation. |
|
Tvout_holdup | Time all output voltages stay within regulation | 18 |
| after loss of AC. |
|
|
|
|
Tpwok_holdup | Delay from loss of AC to deassertion of PWOK. | 17 |
|
|
|
Tpson_on_delay | Delay from PSON# active to output voltages within | 5 |
| regulation limits. |
|
T pson_pwok | Delay from PSON# deactive to PWOK being |
|
| deasserted. |
|
|
|
|
Tpwok_on | Delay from output voltages within regulation limits | 100 |
| to PWOK asserted at turn on. |
|
|
|
|
T pwok_off | Delay from PWOK deasserted to output voltages | 1 |
| (3.3 V, 5 V, 12 V, |
|
| limits. |
|
|
|
|
Tpwok_low | Duration of PWOK being in the deasserted state | 100 |
| during an off/on cycle using AC or the PSON# |
|
| signal. |
|
|
|
|
Tsb_vout | Delay from 5 VSB being in regulation to O/Ps | 50 |
| being in regulation at AC turn on. |
|
|
|
|
MAX
1500
2500
400
50
500
1000
UNITS
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
STATUS
Recommended
Item | Description | MIN |
Tvout_holdup | Time all output voltages stay within regulation | 21 |
| after loss of AC. |
|
|
|
|
Tpwok_holdup | Delay from loss of AC to deassertion of PWOK. | 20 |
|
|
|
Tsb_holdup | Time 5VSB output voltage stays within regulation | 70 |
| after loss of AC. |
|
|
|
|
MAX
UNITS
ms
ms
ms
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