APPROVAL SHEET

Power supply

MODEL NO: SP-ATX-400W-PFC

ENGINEER NO: SUATX0200Z0ABPEU111

Article No. :SP-AP-SU-A

Issue Date :2013-1-9

Version : A/0

Checked by

Audited by

Drafted by

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Tel.: +86-755-26801565 Fax: +86-755-26801561

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Version:A/0

Spire Corp.

Approval Sheet Revisement Record

Article No:SP-AP-SU-A

Version

Revised

Chapter

Description

Revised

Date

Drafted by

Audited by

ECN

No.

First N/A

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Contents

1 Introduction………………………………………………………………5

1.1 Scope………………………………………………………………………5

1.2 General Description………………………………………………….……5

2 Electrical………………………………………………………………………5

2.1 AC Input…………………………………………………..………………5

2.1.1 Input Over current Protection……………………………………5

2.1.2 Inrush Current Limiting…………………………….………………6

2.1.3 Withstand Voltage……………………………......……………...6

2.1.4 Catastrophic Failure Protection……………………….…………..6

2.2 DC Output……………………………………………………….…………6

2.2.1 DC Voltage Regulation……………….……………………………6

2.2.2 Output DC Current Ranges……….………………………………7

2.2.3 Output Voltage Line Regulation. ………………..………….….…7

2.2.4 Cross Regulation…………………………………..……………….7

2.2.5 Efficiency ………………………………………………..................7

2.2.6 Output Ripple/Noise………………………………………………..8

2.2.7 Output Transient Response…………...…………………………..9

2.2.8 Capacitive Load …………………………………………………….9

2.2.9 Closed-loop Stability ……………………………………………….9

2.2.10 Power Sequencing………………………………………………...9

2.2.11 Voltage Hold-up Time…………………………………..………10

2.3 Timing / Housekeeping / Control…………………….…………………..10

2.3.1 PWR_OK……………………………………….…………………10

2.3.2 PS_ON#…………………………………………………..………11

2.3.3 +5VSB……………………..……………….……………….……11

2.3.4 Power-on Time…………………………………...………………11

2.3.5 Rise time………………………………………………………..…11

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2.3.6 Overshoot at Turn-on /Turn-off…………………………..………11

2.3.7 Reset after Shutdown……………………………………………11

2.4 Output Protection…………………………………………………………12

2.4.1 Over voltage Protection…………………………………………12

2.4.2 Over Current Protection…………………………………………12

2.4.3 Short-circuit Protection……………………………………………12

3 Mechanical……………………………………………………..……………12

3.1 AC Connector. ………………………………..…………………………12

3.2 DC Connector Pin Description…………………….……..……………13

4 Environmental…………………………..……………………………………14

4.1 Environmental (Operating)…………………..…………………………14

4.2 Environmental (Non-Operating)…………..……………………………14

5 Electromagnetic Compatibility…………………………..…………………14

5.1 EMI…………………………………………………..……………………14

6 Reliability……………………………………………………………………15

6.1 Component Derating………………………………………..……………..15

6.2 Mean Time Between Failures(MTBF)…………………..……………15

7 Correlative Certification compliance…………………………………………15

8 Connectors& cables diagram ……………………………………………16

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1 Introduction

1.1 Scope

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This specification defines the performance and characteristic for the model of

SP-ATX-400W-PFC power supply.

1.2 General Description

SP-ATX-400W-PFC is a switching power supply, 400W self-contained, AC to DC power source supply suitable for mounting in PC.

1) SPCC 0.6MM ENCLOSURE

2) ONE 12CM FAN

3) Metal Case

2 Electrical

2.1 AC Input

Table 1 list AC input voltage and frequency requirements for continuous operation.

Parameter

Table 1. AC Input Line Requirements

Min. Nom.

(1) Max. Unit

Vin Frequency 50 --- 60 Hzrms

(1) Nominal voltages for test purposes are considered to be within ±1.0 V of nominal.

Power Factor Correction (PFC)

SP-ATX-400W-PFC (w/ Passive PFC)

2.1.1 Input Over Current Protection

The power supply is equipped with a non-reset-able fuse on the AC input to limit power consumption on a failure within the power supply module.

Input Fuse Rating:

Voltage 250 V

Current 6 A

De-activation time 200 ms

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2.1.2 Inrush Current Limiting

Maximum inrush current from power-on (with power on at any point on the AC sine) and including, but not limited to, three line cycles, shall be limited to a level below the surge rating of the input line cord, AC switch if present, bridge rectifier, fuse, and EMI filter components. Repetitive ON/OFF cycling of the AC input voltage should not damage the power supply or cause the input fuse to blow.

2.1.3 Withstand Voltage

The power supply is capable of withstanding a maximum 1500 VDC potential between the input and ground for a period of 1 second.

2.1.4 Catastrophic Failure Protection

If a component failure occurs, the power supply will not exhibit any of the following:

1) Flame

2) Excessive smoke

3) Charred PCB

4) Fused PCB conductor

5) Startling noise

6) Emission of molten material

2.2 DC Output

2.2.1 DC Voltage Regulation

The DC output voltages are remain within the regulation ranges shown in Table

2 when measured at the load end of the output connectors under all line, Load, and environmental conditions.

Table 2. DC Input Line Requirements

Output Range Min. Nom.(1) Max. Unit

+12VDC ± 5% +11.40 +12.00 +12.60 Volts

1) ATX +12VDC peak loading, regulation at the + 12Vdc output can go to±10%.

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2.2.2 Output DC Current Ranges

All outputs are within the specified limits of regulation when each output is subjected to the conditions listed below.

Table 3. DC Input Line Requirements

DC Nominal Voltage

Minimum

Current

+12 V DC 1.2 A

+5 V DC 2.4 A

+3.3 V DC 0.1 A

12 V DC 0.0 A

+5 V SB 0.1 A

Maximum

Current

15A

27A

20A

0.8A

2.0A

NOTE:

1)The combined power output of +5V and +3.3V shall not exceed 206W.

The combined power output of +5V,+3.3V and +12V shall not exceed 385W

2)When +12V,+5V loading max load ,total output power can be 400W whose lasting time shall not exceed 15 seconds .The voltage regulation range of any output loading surge load shall be +/-10%.

3)Input voltage is 220-240Vac ,When peak load.

2.2.3 Output Voltage Line Regulation

The following table specifies line regulation as measured from minimum to maximum load including the transient response requirements as detailed in this document.

Table 4. DC Output Tolerance Specifications

DC Nominal Output

+12V DC

+5V DC

+3.3V DC

-12V DC

+5V SB

2.2.4 Cross Regulation

Output Voltage Tolerance

±1%

±1%

±1%

±2%

±1%

The power supply DC outputs perform within all line and load specifications

Regardless of the static or transient loads on any of the outputs.

2.2.5 Efficiency

68% minimum at 230VAC, 400W output.

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2.2.6 Output Ripple/Noise

The output ripple/noise requirements listed in Table 5 should be met throughout the load ranges specified and under all input voltage conditions as specified. Ripple and noise are defined as periodic or random signals over a frequency band of 10 Hz to 20MHz. Measurements shall be made with an oscilloscope with 20 MHZ bandwidth. Outputs should be bypassed at the connector with a 0.1μF ceramic disk capacitor and a 10μF electrolytic capacitor to simulate system loading. See Figure1.

Output

+12 VDC

Table 5. DC Output Ripple/Noise

Max. Ripple

(mVpp)

120

Max. Ripple& Noise

(mVpp)

240

+5 VDC

+3.3 VDC

50

50

100

100

-12 VDC

+5 VSB

120

50

240

100

Figure1. Differential Noise Test Setup

Power Supply

AC Hot

AC Neutral

V out

V return

10 μ F 0.1 μ F Load

Loa d must be isolat ed from the ground of the power supply

AC Ground

Gene ral Notes:

1.Load the output with its minimum load current.

2.Connect the probes as shown.

3.Repeat the measurement with maximum load on the output.

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Scope

2.2.7 Output Transient Response

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The table below summarizes the output transient steps for each output. The

Transient slew rate is =0.5A/ μ s.

Table 6. DC Output Transient Response Specifications

DC Output Maximum Step Size Output Voltage Tolerance

+12VDC

+5VDC

50% of rated output

50% of rated output

+3.3VDC 30% of rated output

-12VDC 0.1A

+5VSB 0.1A

2.2.8 Capacitive Load

±5%

±5%

±5%

±10%

±5%

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

Table 7. Output Capacitive Loads

DC Output

+12 VDC

+5 VDC

+3.3 VDC

-12 VDC

+5 VSB

ATX12V Capacitive Load (μF)

20,000

12,000

12,000

330

12,000

2.2.9 Closed-loop Stability

The power supply is unconditionally stable under all line/load/transient loads

Conditions including capacitive loads specified in Table 7. A minimum of 45 degrees phase margin and 10 dB gain margin is recommended at both the maximum and minimum loads.

2.2.10 Power Sequencing

All outputs, regardless of loading, turn on within 50ms of each other. The 5VSB output is in regulation for a minimum of 10ms prior to the other output rails reaching regulation.

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2.2.11 Voltage Hold-up Time

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All output will stay within regulation for at least 16ms after an AC line voltage failure is detected at nominal line (230VAC) under full load condition.

2.3 Timing / Housekeeping / Control

Figure 2. Power Supply Timing

VAC_ON

VAC_OFF

PS_OFF#

PS_ON#

+12VDC

95%

+5VDC O/P’s

10%

+3.3VDC

PWR_OK

PWR_OK Sense Level=95% of nominal

T1 ＜ 100ms

0.1ms ≦ T2 ≦ 25ms

100ms ＜ T3 ＜ 500ms

T4 ≦ 10ms

T5 ≧ 16ms

T6 ≧ 1ms

T1

T3

T2

T4

T1：Power-on Time

T2：Rise Time

~

~

~

~

T3：PWR_OK Delay

T4：PWR_OK Risetime

T6：Power-down Warning

T6

T5：AC Loss to PWR_OK Hold-up Time

T5

2.3.1 PWR_OK

The power supply accepts a logic collector level which will disable/enable all the output voltages. As the logic level is low, output voltages are enable;

As the logic level is high, output voltages are disable. The definition of logic low/high level is as:

High Level: 2.50V ~ 5.25V while sourcing 0.4mA maximum

Low Level: 0.0V ~ 0.50V while sinking 5.0mA maximum

Rise Time: 3.0ms maximum (10.0% ~ 90.0%)

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2.3.2 PS_ON#

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The power supply provides an internal pull-up to TTL high. The power supply also provides denounce circuitry on PS_ON# to prevent it from oscillating on/off at startup when activated by a mechanical switch. The DC output enable circuitry is SELV-complaint.

Table 8. PS_ON# Signal Characteristics

Min. Max.

V

IL

, Input Low Voltage

V

IL

, Input Low Current (Vin = 0.4 V)

V

IH

, Input High Voltage (lin = -200 μA)

V

IH

, open circuit, lin = 0

0.0V 0.8V

-1.6mA

2.0V

5.25V

2.3.3 +5VSB

The +5VSB is capable of delivering a maximum of 2.5A at +5V ±5% to external circuit. The power supply +5VSB is with overcurrent protection.

2.3.4 Power-on Time

The power-on time is less than 100ms (T1 < 100ms). The +5VSB has a power-on time of two seconds maximum after application of valid AC voltages. (Figure 1)

2.3.5 Rise time

The output voltages rise from ≤ 10% of nominal to within the regulation ranges within 0.1ms to 25ms ( 0.1ms ≤ T2 ≤ 25ms). (Figure 2)

2.3.6 Overshoot at Turn-on / Turn-off

Any overshoot at turn on or turn off is under 10% of the nominal DC output voltage with further stipulation that all DC outputs are within their specified DC voltage ranges before the generation of the power good signal. Additionally, no voltage may undershoot or overshoot once the power good signal has been asserted.

2.3.7 Reset after Shutdown

The power supply latches into a shutdown state because of a fault condition on its outputs, the power supply returns to normal operating after the fault has been removed and the PS_ON# (or AC input) has been cycled OFF/ON with a minimum OFF time of 1 second.

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2.4 Output Protection

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Each DC output is protected from over voltage, over current and short circuit. The following sections include the details for these protection mechanisms.

2.4.1 Over voltage Protection

The overvoltage sense circuitry and reference reside in packages that are separate and distinct from the regulator control circuitry and reference. No single point fault is able to cause a sustained overvoltage condition on any or all outputs. The power supply provides latch-mode overvoltage protection defined as:

+5V output is between 5.74V to 7V

+12V output is between 13.4V to 15.6V

+3.3V output is between 3.76V to 4.8V

2.4.2 Over Current Protection

The power supply DC outputs are protected from supplying output current above the maximum ratings defined in Table 3, and when output power is between 120%~180%.

With the exception of the 5VSB output, all DC outputs are latched off in the event of an over-current event on any of the DC outputs.

In the event of a short circuit on any output , except the 5VSB rail , all outputs are disabled and remain disabled until the power supply is powered off back on. The 5VSB rail will recover upon removal of the over current condition.

2.4.3 Short-circuit Protection

The power supply DC outputs are protected from damage due to faults, when any output shorts to ground. In the event of a short circuit on any output, all outputs shall be disabled and remain disable until the power supply is powered off and back on. The +5VSB rail will recover upon removal of the over current condition.

3 Mechanical

3.1 AC Connector

The AC input receptacle is an IEC 320 type or equivalent. In lieu of a dedicated switch, the IEC 320 receptacle may be considered the mains disconnect.

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1

15

3.2 DC Connector Pin Description

1

2

3

4

1

2

3

4

Pin Color Signal

1 Red +5VDC

2 Black

Pin

3

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Pin Color Signal Pin Color

Orange

1 Orange +3.3VDC

13

Brown

Signal

+3.3VDC

+3.3V default sense

2 Orange +3.3VDC

14 Blue -12VDC

3 Black COM 15 Black COM

4 Red +5VDC 16 Green PS_ ON/OFF

5 Black COM 17 Black COM

6 Red +5VDC 18 Black COM

7 Black COM 19 Black COM

8 Gray PWR_ OK 20 NG NG

9 Purple +5VSB 21 Red +5VDC

10 Yellow +12VDC 22 Red +5VDC

11 Yellow +12VDC 23 Red +5VDC

12 Orange +3.3VDC

24 Black COM

Pin Color Signal Pin Color Signal

1 Red +5VDC 3 Black COM

2 Black COM 4 Yellow +12VDC

Color Signal

Black COM

COM 4 Yellow +12VDC

Pin Color Signal Pin Color Signal

1-3 Orange +3.3VCD 10-12 Black GND

4-6 Black

7-9 Red

GND

+5VCD

13-15 Yellow +12VCD

1

2

3

4

Pin Color Signal Pin Pin Signal

1 Black COM 3 Yellow +12VDC

2 Black COM 4 Yellow +12VDC

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4 Environmental

4.1 Environmental (Operating)

Temperature: 0℃ to 40℃

Humidity: 5% to 90% Relative Humidity (non condensing)

Altitude: 0 meters to +3,048 meters

4.2 Environmental (Non-Operating)

Temperature: -20 to 60℃

Humidity: 5% to 85% Relative Humidity (non condensing)

Altitude: 0 meters to +15,244 meters

5 Electromagnetic Compatibility

The following subsections outline sample product regulations requirements for a typical

Power supply. Actual requirements will depend on the design, product end use, target

Geography, and other variables. Consult your company’s Product Safety and Regulations

Department for more details

5.1 EMI

The power supply is complied with CISPR 22, Class B. Tests are performed at

220VAC 50 Hz power. The SP-ATX-400W-PFC meets the requirement of EN

61000-3-2 Class D, and EN 61000-3-3, and the Guidelines for the Suppression of

Harmonics in Appliances and General Use Equipment Class D for harmonic line current content at full-rated power.

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6 Reliability

6.1 Component Derating

The following component derating guedelines are recommended:

‧ Semiconductor junction temperatrues shall not exceed 110℃ with an ambient of 50℃.

‧ Inductor case temperature shall not exceed safety agency requirements.

‧ Capacitor case temperature shall not exceed 95% of rated temperature.

‧ Component voltage and current derating shall be >10% at 50℃.

‧ Magnetic saturation of any transformer will not be allowed under any line, load, startup or transient condition including 100% transients on the five main outputs or

+5VSB.

6.2 Mean Time Between Failures(MTBF)

The power supply reliability is based on the calculation with the Part-Stress Analysis method of MIL-HDBK-217F using the quality factors listed in

MIL-HDBK-217F. The power supply MTBF is 100,000 hours under the following conditions:

- 25℃ ambient

7.Correlative Certification compliance

Item # Certification type Certification Number Certification listing Remark

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8.

Connectors and cables diagram :

SATA SATA SATA SATA

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9.Photograph:

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