Fairchild FSB127H User Manual

User Guide for

FEBFSB127H_T001

Evaluation Board

FSB127H 100kHz Power Switch for

ATX Standby 16W

Featured Fairchild Product:

FSB127H

Direct questions or comments

about this Evaluation Board to:

“Worldwide Direct Support”

Fairchild Semiconductor.com

Table of Contents

1. Overview ................................................................................................................................... 3

2. Board Configuration ................................................................................................................. 3

3. Schematic .................................................................................................................................. 4

4. PCB Layout ............................................................................................................................... 5

5. Test Results ............................................................................................................................... 6

5.1. Brown-in / Brownout ...................................................................................................... 6

5.2. AC Trim Up and Trim Down ......................................................................................... 6

5.3. Line and Load Regulation .............................................................................................. 6

5.4. DC Output Rise Time ..................................................................................................... 7

5.5. DC Transient Response .................................................................................................. 8

5.6. Ripple and Noise ............................................................................................................ 8

5.7. Capacitive Load .............................................................................................................. 9

5.8. Power Saving ................................................................................................................ 10

5.9. Efficiency ..................................................................................................................... 10

5.10. Short-Circuit Protection ............................................................................................... 11

5.11. X-Cap Discharge .......................................................................................................... 11

5.12. Over-Power Protection ................................................................................................. 12

5.13. Surge and ESD ............................................................................................................. 12

5.14. EMI Conduction ........................................................................................................... 12

6. Bill of Materials ...................................................................................................................... 13

7. Transformer ............................................................................................................................. 14

7.1. Transformer Specification .............................................................................................. 14

8. Revision History ..................................................................................................................... 15

This user guide supports the 16W evaluation board for ATX standby using FSB127H. It should be used in conjunction with the FSB127H datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at

www.fairchildsemi.com

1. Overview

The highly integrated FSB-series consists of an integrated Current Mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

Compared with a discrete MOSFET and controller or RCC switching converter solution, the FSB-series reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform for the design of cost-effective flyback converters, as in PC auxiliary power supplies.

.

Figure 1. Photo of FEBFSB127H_T001

2. Board Configuration

 Input Voltage: 90V  Output Voltage: 5V  Output Current: 0 – 3.2A  Operation Frequency: 100kHz

– 264VAC

AC

3. Schematic

Figure 2. Evaluation Board Schematic

4. PCB Layout

Figure 3. Evaluation Board PCB Layout

5. Test Results

5.1. Brown-in / Brownout

5.1.1. Test Condition

Decrease input AC voltage gradually and measure the turn-off threshold.

After DC power off, increase input voltage and measure the recovery threshold.

5.1.2. Test Result

RHV=200kΩ Minimum Load Maximum Load

5.2. AC Trim Up and Trim Down

5.2.1. Test Condition

Switch the input voltage from 90V to 264V or from 264V to 90V; the output voltages should be normal.

Turn off 70 VAC 68 VAC

Turn on 81 VAC 81 VAC

5.2.2. Test Result

Minimum Load Maximum Load

90V264V Pass Pass

264V 90V Pass Pass

5.3. Line and Load Regulation

5.3.1. Test Condition

Line regulation: 1% maximum.

Load regulation: 5% maximum.

5.3.2. Test Result

Input Voltage Max. Load Min. Load Load Regulation (%)

90V / 60Hz 4.971V 5.013V

264V / 50Hz 4.988V 5.013V

Line Regulation (%) 0.34% 0%

0.84%

5.4. DC Output Rise Time

5.4.1. Test Condition

Load: maximum load and minimum load. DC-output rise time: 20ms, maximum.

5.4.2. Measured Waveforms

Figure 4. 90V / 60Hz Maximum Load Figure 5. 90V / 60Hz Minimum Load

Figure 6. 264V / 50Hz Maximum Load Figure 7. 264V / 50Hz Minimum Load

5.5. DC Transient Response

/

5.5.1. Test Condition

From 10–90% of maximum and minimum load, with a 2.5A/μs slew rate; 5ms/5ms.

5.5.2. Measured Waveforms

Figure 8. 90V

60Hz Figure 9. 264V

AC

50Hz

5.6. Ripple and Noise

5.6.1. Test Condition

Tested by DC loading side parallel with a 10μF/EC and 0.1μF/CC capacitor and measured bandwidth with DC-20MHz.

5.6.2. Measured Waveforms

Figure 10. 90V / 60Hz Maximum Load Figure 11. 90V / 60Hz Minimum Load

Figure 12. 264V / 50Hz Maximum Load Figure 13. 264V / 50Hz Minimum Load

5.7. Capacitive Load

5.7.1. Test Condition

Output Capacitive Load = 12000μF

5.7.2. Measured Waveforms

90V / 60Hz Maximum Load 90V / 60Hz Minimum Load

264V / 50Hz Maximum Load 264V / 50Hz Minimum Load

5.8. Power Saving

5.8.1. Test Condition

The input wattage is < 1W in Standby Mode with 0.5W loading for 2010 EuP.

The input wattage is < 0.5W in Standby Mode with 0.25W loading for 2013 EuP.

5.8.2. Test Result

FSB127H Input Watts Output Watts

A. When VIN= 230VAC, with 0.5W Loading 0.713W 0.5W

When VIN= 240VAC, with 0.5W Loading 0.715W 0.5W

When VIN= 264VAC, with 0.5W Loading 0.733W 0.5W

B. When VIN= 230VAC, with 0.25W Loading 0.384W 0.25W

When VIN= 240VAC, with 0.25W Loading 0.389W 0.25W

When VIN= 264VAC, with 0.25W Loading 0.406W 0.25W

C. When VIN= 230VAC, with No Loading 53mW x

When VIN= 240VAC, with No Loading 56mW x

When VIN= 264VAC, with No Loading 68mW x

5.9. Efficiency

5.9.1. Test Condition

Measure efficiency at minimum, mid-point, and maximum loading.

5.9.2. Test Result

FSB127H Input Watts Output Watts Efficiency

When VIN= 115V, at 100% Load 20.62W 16W 81.17%

When VIN= 115V, at 75% Load 15.28W 12W 82.42%

When VIN= 115V, at 50% Load 10.02W 8W 82.51%

When VIN= 115V, at 25% Load 5.07W 4W 81.70%

When VIN= 230V, at 100% Load 20.78W 16W 81.40%

When VIN= 230V, at 75% Load 15.11W 12W 82.24%

When VIN= 230V, at 50% Load 10.15W 8W 80.45%

When VIN= 230V, at 25% Load 5.18W 4W 78.62%

5.10. Short-Circuit Protection

/

5.10.1. Test Condition

In the event of a short circuit on any DC output, the power supply should be protected from damage.

5.10.2. Test Result

90V / 60Hz 264V / 50Hz

Minimum Load PASS PASS

Maximum Load PASS PASS

5.10.3. Measured Waveforms

Figure 14. 90V

(Ch1: Drain, Ch2: VDD, Ch3: FB)

60Hz, Output Short

AC

Figure 15. 264V

(Ch1: Drain, Ch2: VDD, Ch3: FB)

50Hz Output Short

AC

5.11. X-Cap Discharge

5.11.1. Test Condition

The voltage will have decayed to 37% of its original value in one second after the AC input plug is disconnected.

5.11.2. Measured Waveforms

Figure 16. 264V

50Hz, No Load,X-Cap=0.47μF, RHV=200kΩ

AC

5.12. Over-Power Protection

/

V

M

N

V

M

K

M

N

V

M

N

V

M

K

M

N

5.12.1. Test Condition

An over-current from the output return line does not damage the power supply and the OLP protection is enabled.

5.12.2. Test Result

Input Voltage 90V 115V 132V 180V 230V 264V

OPP (W) 24.10W 25.43W 26.42W 26.37W 26.04W 26.12W

5.13. Surge and ESD

5.13.1. Test Result

L-PE ±6KV N-PE ±6KV L-N ±1KV AIR ±16KV Contact ±8KV

Pass Pass Pass Pass Pass

5.14. EMI Conduction

5.14.1. Measured Waveforms

RBW 9 kHz MT 10 ms

dBµV dBµV

100

90

1 PK

AXH

80

2 A

AXH

70

EN55022Q

60

EN55022A

50

40

30

20

10

0

150 kHz 30 MHz

1 MHz 10 MHz

PREAMP OFFAtt 10 dB

Figure 17. L: 115 /60Hz Figure 18. N: 115 / 60Hz

RBW 9 kHz MT 10 ms

dBµV dBµV

100

90

1 PK

AXH

80

2 A

AXH

70

EN55022Q

60

EN55022A

50

40

30

20

10

0

150 kHz 30 MHz

1 MHz 10 MHz

Figure 19. L: 230

PREAMP OFFAtt 10 dB

50Hz Figure 20. N: 230 / 50Hz

dBµV dBµV

100

90

SGL

1 P

AXH

80

2 A

TDF

AXH

70

EN55022Q

60

PR

EN55022A

50

6DB

40

30

20

10

0

150 kHz 30 MHz

dBµV dBµV

100

90

SGL

1 P

AXH

80

2 A

TDF

AXH

70

EN55022Q

60

PR

EN55022A

50

6DB

40

30

20

10

0

150 kHz 30 MHz

1 MHz 10 MHz

RBW 9 kHz MT 10 ms PREAMP OFFAtt 10 dB

SGL

TDF

PR

6DB

SGL

TDF

PR

6DB

6. Bill of Materials

Component Qty Part No. Manufacturer Reference

JUMPER WIRE 0.8Ø (mm) 5 JP1, JP2, JP3, JP4, JP5

Resistor 1206 0Ω ±5% 2 R19, R20

Resistor 1206 100KΩ ±5% 2 R8, R22

Resistor 1206 20KΩ ±1% 3 R13, R14, R18

Resistor 1206 300Ω ±5% 1 R11

Resistor 1206 5K1Ω ±5% 1 R17

Resistor 1206 62KΩ ±1% 1 R15

NTC 13Ø 2ΩSCK132 1 NTC

1206 MLCC X7R 102P 50V ±10% 2 C9, C12

1206 MLCC X7R 102P 1KV ±10% 1 C8

1206 MLCC X7R 103P 50V ±10% 1 C13

1206 MLCC X7R 222P 50V ±10% 1 C15

Electrolytic Capacitor 10μ 50V 105°C

Electrolytic Capacitor 120μ 420V 105°C

Electrolytic Capacitor 1000μ 10V 105°C

X2 Capacitor 0.47μ 275V ±20% 1 C1

Y1 Capacitor 222P 250V ±20% 1 C14

Inductor 14mH 1 TRN0183 SEN HUEI L1

Inductor 2.5μH 1 TRN0204 SEN HUEI L2

Transformer EI-22 900μH 1 TRN0317 SEN HUEI TX1

Schottky Diode 5A/40V 1 SB540 FAIRCHILD D1

Fast Diode 1A/1000V 1 1N4007 FAIRCHILD D2

Fast Diode 1A/200V 1 1N4935 FAIRCHILD D3

SMD Fast Diode 1A/1000V 2 S1M FAIRCHILD D6, D7

Bridge 2A/800V 1 2KBP08M FAIRCHILD BD1

REGULATOR KA431L ±0.5% 1 FAIRCHILD U3

IC FOD817A DIP 1 FAIRCHILD U2

FUSE CERAMIC 250V1A 3.6*10mm 1 SLOW 37SG SLEEK F1

Varistor 7ψ470V 1 MOV

TVS Breakdown Voltage 143V–158V 1 P6KE150A FAIRCHILD D8

Test Pin SG004-05 4 L N VO+ VO-

PCB PLM0152 REV0 1 FAIRCHILD

FSB127HNY 1 FAIRCHILD U1

1 LHK JACKCON C11

1 LHK PAG C4

2 LHK SAMXON C6, C7

7. Transformer

7.1. Transformer Specification

EI - 22

1

2

/2

N

p

10

N

5V

Np/2

N

3

4

a

5

6

Core: EI-22 (Ae=37.5mm2) Bobbin: EI-22

Figure 21. Transformer Specification

Table 1. Winding Specifications

Pins (S → F) Wire Turns Winding Method

Np/2 3 → 2 0.27φ×1 31 Solenoid Winding

Insulation: Polyester Tape t = 0.025mm, 3 Layer

N5V 6 → 10 0.55φ×2 5 Solenoid Winding

Insulation: Polyester Tape t = 0.025mm, 3 Layers

Np/2 2 → 1 0.27φ×1 31 Solenoid Winding

Insulation: Polyester Tape t = 0.025mm, 6 Layers

Na 4 → 5 0.15φ×1 12 Solenoid Winding

Insulation: Polyester Tape t = 0.025mm, 3 Layers

Table 2. Specifications

Pins Specifications Remark

Primary-Side Inductance

Primary-Side Effective Leakage

1－3

900µH ±10% 100kHz, 1V

< 30 H Max. Short All Other Pins

8. Revision History

Rev. Date Description

0.0.1 11/10/11 Initial release

WARNING AND DISCLAIMER

Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Users’ Guide. Contact an authorized Fairchild representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

EXPORT COMPLIANCE STATEMENT

These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited.

U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be responsible to ensure the appropriate U.S. export regulations are followed.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.