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05

3.5 Hold-up Time

DC +5V output maintains at least 16mS after power off which hold within full load  under 
230V/50Hz condition.

3.6 5VSB

5VSB is requierd for the implementation of PS-ON described above. 5VSB is a standby voltage 
that may be used to power circuits that require power input during the powered-down state of all 
power rails. The 5 VSB pin should deliver 5V ±5% at a minimum of 3.0 A for PC board circuits to 
operate. Conversely, PC board should draw no more than 3.0A maximum form this pin. This power 
may  be used to operate circuits such as soft power control.

3.7 PG-OK

PG-OK is a power good signal and should be asserted high by power supply to indicate that the 
+5 VDC and +3.3 VDC outputs are above the under-voltage thresholds of the power supply. When 
this signal is asserted high, there should be sufficient mains energy stored by the converter to 
guarantee continuous power operation within specification. Conversely, when either the +5VDC 
or the +3.3VDC output voltage falls below the under-voltage threshold, or when  mains power has 
been removed for a time sufficiently long so that power supply operation is no longer guaranteed, 
PG-OK should be deasserted to a low state. See Figure 1 for a representation of the timing 
characteristics of the PG-OK,PS-ON, and germane power rail signals.

3.8 3.3V Sense

A default 3.3V sense line should be implemented pin 13 of the connector.

3.9 Capacitive Load

The power supply should be able to power up and operate normally with the following  capacitances 
simultaneously present on the DC outputs.

Output

+5V

+12V

+3.3V

-12V

+5VS

Capacitive load (uF)

6,000

8,000

6,000

350

350

Содержание ST55F-G

Страница 1: ...lies Compact design with a depth of 140mm for easy integration 80 PLUS Gold certification 100 modular cables 24 7 continuous power output with 40 operating temperature Class leading single 12V rail St...

Страница 2: ...ding or performing maintenance on your system A copy of this manual can also be downloaded from our website at Installation and system optimization guide General Input Characteristics Output character...

Страница 3: ...pply This specification also defines worldwide safety and electromagnetic compatibility requirements for the power supply which is intended for use in computer products 1 General 2 1 Input Voltage Nom...

Страница 4: ...all be less than the ratings of its critical components including input fuse bulk rectifiers and surge limiting device 2 5 Efficiency ST75F GS ST65F G ST55F G provides an efficiency of 87 minimum when...

Страница 5: ...loscope The output terminal shall add a tantalum capacitor of 10uF in parallel with a ceramic capacitor of 0 1uF ST65F G Output Voltage 5V 12V 12V 5Vs 3 3V Load MIN 0 0A 0 0A 0 0A 0 0A 0 0A Range MAX...

Страница 6: ...uts except the 5VSB turn off This signal is pulled to a standby voltage by a pull up resistor internal to the power supply TTL level H 2 0 V 5 25 V L 0 0 V 1 0 V Load Light Load Typical Load Full Load...

Страница 7: ...e the under voltage thresholds of the power supply When this signal is asserted high there should be sufficient mains energy stored by the converter to guarantee continuous power operation within spec...

Страница 8: ...wer delivery since short circuit of any output or over total power at high line 4 2 4 Short Circuit Protection Short circuit placed on 5V 12V 3 3V 12V will latch off 5VSB will auto recovery 4 2 5 Over...

Страница 9: ...ge in 0 C environment The power supply can operate normally at any altitude between 0 to 10000 feet 5 2 Cold Start 5 Start Stability 6 1 1 Operating 6 1 Temperature and Humidity 6 2 Altitude Sweep and...

Страница 10: ...lied between both primary and secondary windings for a minimum of one minute 8 4 Dielectric Voltage Withstand 8 Product Safety A TTL compatible signal for the purpose of initiating an orderly start up...

Страница 11: ...ed The MTBF of the power should be 100 000 hours min 10 MTBF Applying 220Vac for 230V model 11 1 Input Voltage Applying 75 loads for the power supply in 45 5 oC chamber for 4 hours 11 2 Test Condition...

Страница 12: ...NO G1122...

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