Fairchild Reference Design RD-355

www.fairchildsemi.com

© 2013 Fairchild Semiconductor Corporation 1 RD-355 • Rev. 0.0.2

Fairchild Reference Design RD-355

This reference design supports inclusion of three-phase PMSM / BLDC controller,

FCM8531QY; Motion Smart Power Module 45 Series, FNB41560; Interleaved Dual-

BCM PFC Controller, FAN9611MX; Advanced Pulse Frequency Modulation Controller,

FAN7631SJX; and Green Mode Fairchild Power Switch, FSL206MRN; in design of a

PMSM motor drive solution up to 600 W. The selection of the heat sink on this reference

design is based on air-flowing condition. If the surrounding is air static in the real

application, enhance the heat sink or downgrade the power.

Because the PFC and insulating DC-DC stage of this reference design are functional

independently, it can be used in other high-efficiency power applications around 600 W.

This document should be used in conjunction with the FCM8531QY, FNB41560,

FAN9611MX, FAN7631SJX, and FSL206MRN datasheets as well as Fairchild’s

application notes and technical support team. Please visit Fairchild’s website at:

http://www.fairchildsemi.com.

Application Fairchild Device Input Voltage

Range Maximum

Motor Power Rating Voltage of

Motor

PSMS Motor Drive System

FCM8531QY FNB41560

FAN9611MX FAN7631SJX FSL206MRN

90-265 VAC 600 W 350 VDC

Key Features

Total Solution for PMSM Motor Drive

High Power Factor (PF) Low Total Harmonic Discharge (THD)

Wide VIN Range: 90-265 VAC

Motion Control Circuit Insulated from Power Grid (Safer for Software Debugging)

Modularity Design on Power Factor Controller (PFC) Simplifies PCB Layout

Each Functional Block Can Be Evaluated Independently

Demonstration Program Pre-Programmed

Rich Protection on Each Circuit Block

http://www.fairchildsemi.com/



1. PFC Stage

For the PFC of 200-1 KW, interleaved BCM topology has many advantages (refer to

FAN9611 Product Folder for details). However, PCB layout is critical due to interleaved

operation and low current-switching (CS) limitation. The pulse-by-pulse current limit and

zero current-switching (ZCS) can be miss-triggered by another channel if the grounding

and decoupling is inadequate. In this reference design, the modular design puts the

layout-sensitive circuit on a small daughter board and provides the full documentation of

the design. Customers can use the Gerber file and mechanical drawing in production to

speed up the time to market.

1.1. Photographs

Figure 1 shows the PFC stage on the evaluation board and includes the AC socket and

EMI filters. Figure 2 shows the PFC module alone.

Figure 1. PFC Stage is Red Block

Figure 2. PFC Module

http://www.fairchildsemi.com/pf/FA/FAN9611.html



1.2. Schematic

Figure 3. Schematic of PFC Stage

C20 102

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CON1 30Pins 2.54mm 90Deg.

+ C18 470uF 450V

R16 39

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

C8 472

R4 1M 1206

R5 18K

Vin

R3 1M 1206

R6 47K

+ C19 470uF 450V

Q4 MMBT2907A

10

3

9

2 T1 PQ32

Vcc 1 2

Power-PFC 400V

R11 39

C16 106/1206

D3 1N4148WS

Vcc

R15 10

D5 FFPF15S60S

D6 FFPF15S60S

10

3

9

2 T2 PQ32

R10 10

Vcc

Q3 MMBT2907A

R1 1M 1206

R2 1M 1206

C4 472/250VAC

C5 472/250VAC

2

1

3

4

-

+ D1 DFB2060

F1 10A/250VAC

RT1 2R/13D

RV1 7D-561

1 5

4 8 L2 2.2mH/8A

C1 1uF/250VAC

C2 1uF/250VAC

1 5

4 8 L1 2.2mH/8A

C3 225/400V

PFC Module Board

1 2 3

CN6 AC in

L3 150uH

C6 225/400V

D4 1N4148WS

R14 1K

R19 1K

C15 22

ZCD1 1

ZCD2 2

5VB 3

MOT 4

AGND 5

SS 6

COMP 7

FB 8 OVP 9 VIN 10

PGND 11 DRV2 12 DRV1 13

VDD 14 CS2 15 CS1 16

U1 FAN9611

R28 47K

Vin

R27 47K

C13 102

R13 0.01 2512

C17 102

C9 224

R7 75K

C21 102

C10 474

R18 0.01 2512

Q2 FCPF36N60NT

R17 10K

R12 10K

Q1 FCPF36N60NT

C12 474

R9 75K

R23 1M 1206

R24 1M 1206

C7 22

R25 15K

R20 1M 1206

R21 1M 1206

R22 15K

C11 153

400V

D2 S3J



1.3. Mechanical

Figure 4 shows the mechanical dimensions of the PFC module. Figure 5 shows the

dimensions of the aluminum base of the PFC module, which conducts heat from the

MOSFETs and Fast-Recovery Diodes (FRDs) to the heat sink. Figure 6 shows the

dimensions of the heat sink. This heat sink is shared by all of power devices in the

primary side and includes bridge rectifier, PFC module, and the DC-DC MOSFETs. All

dimensions are in mm.

Figure 4. Mechanical Dimension of PFC Module



Figure 5. Dimension of Aluminum Base Plate of the PFC Module

Figure 6. Dimension of Heat Sink in Primary Side

1.4. Magnetic Component



Figure 7. PFC Inductor Specification

1.5. Performance

Table 1. Efficiency of Power Factor Control Stage

VIN (VAC) 90 110 220 265

25% Load 92.59% 92.95% 93.33% 91.79%

50% Load 94.05% 94.12% 94.78% 94.56%

100% Load 92.36% 93.75% 96.87% 97.25%

Table 2. Power Factor and Total Harmonic Distortion

VIN (VAC) 90 110 220 265

Load (%) PF THD PF THD PF THD PF THD

25 0.981 14.96% 0.973 16.66% 0.886 19.05% 0.818 21.80%

50 0.983 16.82% 0.981 17.14% 0.962 13.09% 0.930 14.71%

75 0.989 12.83% 0.986 14.27% 0.976 12.37% 0.961 11.44%

100 0.994 8.92% 0.988 12.38% 0.984 10.83% 0.978 9.53%



2. Insulation DC-DC Stage

In this reference design, the DC-DC stage insulates the GND node of FCM8531 and SPM

from the power grid for safety. Due to the outstanding driving ability of FAN7631, the

full-bridge LLC topology is achieved with low-cost pulse transformers. The integration

of FAN7631 simplifies the DC-DC stage. By modifying the turn ratio of the transformer

and feedback circuit, the output voltage can be changed for other applications.

If the insulation is not required after software debugging, the DC-DC stage can be

omitted by tying C18 and C41 together with wire, and removing the power-LLC jumper.

2.1. Photographs

Figure 8 shows the DC-DC stage on the board. Figure 2 shows the PFC module.

Figure 8. DC-DC in Red Block



2.2. Schematic

Figure 9. Schematic of DC-DC Stage

DrA+

DrD+

DrB+

DrD-

C32474

R5110

C43331

R392.2

R4047

R38

47

D301N4148WSQ31

MMBT2907A

DrB-

Q30FDPF20N50FT

1325

T30PQ4040

R422.2

R354.7K

R4347

R41

47

Q32FDPF20N50FT

D311N4148WSQ33

MMBT2907A

R501K

DrD+

R4647

R452.2

R44

47

D321N4148WS

R47

47

C34223

R482.2

D331N4148WS

R4947

C33NC

Q36FDPF20N50FT

Q34FDPF20N50FT

Q37MMBT2907A

Q35MMBT2907A

R3318K

CO

N1

RT

2

SS

3

DT

4

SG

7

LS

8C

S9

PG

10

NC

5

FI

6LO

11

CT

R14

NC

13

LV

cc

12

HV

cc

16

HO

15

U30FAN7631

C37224

C30103

DrB+

DrC-

HV

C39224

1325

T32EE13

R5210

DrC-

DrC+

2

4

3

1

U31FOD817C

DrC+

R542.2K

DrA-

DrA+

C35225

C36224

D36FFPF08H60S

R368.45KF

C38224

R321M1206

R311M1206

DrB-

D37FFPF08H60S

DrA-

C4047nF/1000VHigh Current Film Cap C42

225/400V

R55

18K

R56

18K

C44225

R57

18K

12

Power-LLC

R58

18K

D38FFPF08H60S

R6510K

HV

D39FFPF08H60S

D40P6KE350A

R6918K

Vcc

R7210

HV

11332255

T31EE13

DrD

-

+ C53470uF

400V

R30A-30H

50mOhm

1206X8

400V



2.3. Mechanical

Figure 10 shows the dimension of heat sink. This heat sink shares by rectifier of the DC-

DC and the SPM. All dimensions are in mm.

Figure 10. Dimension of Heat Sink in Secondary Site




Figure 11. Pulse Transformer T31, T32 Specification

Figure 12. LLC Transformer T30 specification

2.5. Performance

Table 3. PFC + DC-DC Stage Efficiency

AC In to HV Out (VIN = 220 V 50 Hz, VOUT = 350 VDC).

Load 50% 100%

Efficiency 91.21% 93.63%



3. PSMS Motor Control and 3 Phase Bridge Driving Stage

3.1. Photographs

Figure 13 shows the motor control and driving stages on the evaluation board.

Figure 13. Motor Control in Red Block, Motor Drive in Yellow Block

3.2. Schematic

Figure 14. Motor Control and Driving Stages Schematic

HV

D70NC

TP-HV

R70

NC

TP-SF

R76 100

TP-VSP

TP-VL

R84 100

R97 39K

C89

104

TP-VH

R85 100

TP-VC-ADC

1234

CN3Communication

IA

12345

CN2Hall Port

R94 39K

R107 1K

L80Bead/0805

DVdd

TP-UL

IB

+15V

R86 100

R790.11206

12

Power-SPM

DVdd

IC

R804.7

C70335

1 23 4

JP2JUMPER2

TP-VIA

R108 1K

R780.11206

C81

105

TP-UH

SW3Reset

R87 100

R770.11206

R814.7

1234

JP1JUMPER2

R109 1K

DVdd

C94102

C82

104

DVdd

R88 100

StatusRed

C80

104

R968.45K

R75 100

R89 100

+5V

R102 100

C91102

Vpp

+15V

R101 100

TP-VIB

C97

102

C96

104

DVdd

C88

102

12

Power 8531

R90 1K

TP-VIC

R98 39K

R115100

VR8010KSpeed control

C98

102

TP-W

R99 39K

+5V

C87

104

C99

102

TP-R/S

123

CON30To Motor

C84

22

TP-HA

C92

104

DVdd

R9310K

1 2

SW2CW/CCW

C85

22

OVS

R74 100

+15VA

R110

100

TP-HB

TP-DIR

C86

22

TP-V25

OVS

R111330K1206

R112330K1206

R113330K1206

TP-AO

TP-HC

+15V

Green

R82 100

C95

104

Vpp

TP-WL

DVdd

IA

+ C73100uF

25V

TP-U

IB

R1034.7K

+5V

C83

105

TP-V

1 23 45 67 89 10

11 1213 14

CN1MCDs Kit Bus

DVdd

R9210K

C93

104

IC

R1044.7K

S-Fault

TP-OVS

R1002K

Vts

R913.3K

R1054.7K

L81Bead/0805

1 2

SW1Run/Stop

C90102

TP-WH

HV

R83 100 P101

P112

P123

P134

P145

P156

P167

P178

P24

9

P25

10

P26

11

RS

T12

VC

13

VB

14

VA

15

AD

C3

16

AVss17

ADC018

IC19

IB20

IA21

AVdd22

DVdd23

V2524D

Vss

25

VP

P26

P02

27

P03

28

P04

29

P05

30

P06

31

P07

32

U80FCM8531

C75

335

Vts

R9524K

R11424K

R1061K

C74

102

+15VA

S-Fault

TP-SPMT

R116

NC

D71NC

C71335

TP-TS

R117

NC

D72NC

C72335

DVdd

R1181K

+5V

White

Vth1

Rth2

P3

U4

V5

W6

NU7

NV8

NW9

Csc10

Vf o11

In(WL)12

In(VL)13

In(UL)14

COM15

VccL16

VccH17

In(WH)18

In(VH)19

In(UH)20

Vs(W)21

Vb(W)22

Vs(V)23

Vb(V)24

Vs(U)25

Vb(U)26

U70FNB41560



4. Auxiliary Power

4.1. Photographs

Figure 15 shows the auxiliary power on the evaluation board.

Figure 15. Auxiliary Power in Red Block

4.2. Schematic

Figure 16. Schematic

C14222/250VAC

PFC_OUT

VIN1

VOUT3

U63LM78L05ACZX

+ C66100uF

10V

+5V

+ C62220uF

35V

C63

222/500V/1206

1

9

210

4

6

T60EE13

D60

ES1J

TP-15VD64ES1D

+ C64220uF

35V

C65473

R684.75KF

R6724K

U62LM431ACZ

R642.2K

R663.3K

R652.2K

+ C6122uF

35V

Vcc

C60473

2

4

3

1

U61FOD817C

D621N4148WS

R69

220/1206 TP-5V

+15V

D61

MMSD0370

R63

3.3K

470K1206

R60220K1206

+15V

GN

D1

Vcc

2

Vfb

3

LS

4V

str

5

D6

D7

D8

U60FSL206

D63MM5Z16V

Q602N4401




Figure 17. Auxiliary Power Transformer T60 Specification



5. PCB Layout

5.1. Main Board Top and Bottom Side

Figure 18. Top Side Figure 19. Bottom Side

5.2. PFC Module Board Top and Bottom Side

Figure 20. Top Side Figure 21. Bottom Side



6. Bill of Materials

Table 4. BOM of Main Board (shaded by component type)

Part Number Description Qty. Designator Manufacturer

IC 650V FPS FSL206MRN DIP-8 1 U60 Fairchild Semiconductor

IC PFM Controller FAN7631SJX SOP-16 1 U30 Fairchild Semiconductor

IC 600V 15 A SPM FNB41560 SPMAA - A26 1 U70 Fairchild Semiconductor

IC BLDC Controller FCM8531QY LQFP-32 1 U50 Fairchild Semiconductor

IC Photo Coupler FOD817C MDIP-4L 2 U31, C61 Fairchild Semiconductor

IC Shunt Regulator LM431ACZ TO-92 1 U62 Fairchild Semiconductor

IC 5 V 0.1 A LDO LM78L05ACZX TO-92 1 U63 Fairchild Semiconductor

MOSFET FDPF20N50FT TO220F 4 Q30, Q32, Q34, Q36 Fairchild Semiconductor

Transistor MMBT2907A SOT-23 4 Q31, Q33, Q35, Q37 Fairchild Semiconductor

Transistor 2N4401TA TO-92 1 Q60 Fairchild Semiconductor

Bridge Diode DFB2060 20 A 600 V TS-6P-4L 1 D1 Fairchild Semiconductor

Diode S3J 3 A 600 V SMC 1 D2 Fairchild Semiconductor

Diode FFPF08H60S 8 A 600 V TO220F-2L 4 D36-D39 Fairchild Semiconductor

Diode ES1D 1 A 200 V 15 ns SMA 1 D64 Fairchild Semiconductor

Diode ES1J 1 A 600 V 35 ns SMA 1 D60 Fairchild Semiconductor

Diode 1N4148WS 0.3 A 70 V SOD-323 5 D30-D33, D62 Fairchild Semiconductor

Diode MMSD3070 0.2 A 200 V SOD-123 1 D61 Fairchild Semiconductor

TVS P6KE350A 350 V DO-41 1 D40 Fairchild Semiconductor

Zener Diode MM5Z16V 16 V 0.2 W SOD-523F 1 D63 Fairchild Semiconductor

LED 5 mm Green 1 +15 V Any

LED 5 mm White 1 +5 V Any

LED 5 mm Red 1 Status Any

SMD Resistor 0805 2.2 Ω ±5% REEL 4 R39, R42, R45, R48 Any

SMD Resistor 0805 4.7 Ω ±5% REEL 2 R80, R81 Any

SMD Resistor 0805 10 Ω ±5% REEL 3 R37, R51, R52 Any

SMD Resistor 0805 47 Ω ±5% REEL 8 R38, R40, R41, R43, R44, R46, R47, R49

Any

SMD Resistor 0805 100 Ω ±5% REEL 12 R82-R89, R101, R102,

R110, R115 Any

SMD Resistor 0805 1 kΩ ±5% REEL 7 R50, R73, R90, R106-

R109 Any

SMD Resistor 0805 2 kΩ ±5% REEL 1 R100 Any

SMD Resistor 0805 3.3 kΩ ±5% REEL 3 R63, R66, R91 Any

SMD Resistor 0805 4.7 kΩ ±5% REEL 4 R35, R103-R105 Any

SMD Resistor 0805 4.75 kΩ ±1% REEL 1 R68 Any

SMD Resistor 0805 8.45 kΩ ±1% REEL 1 R57 Any

SMD Resistor 0805 10 kΩ ±5% REEL 3 R53, R92, R93 Any

SMD Resistor 0805 18 kΩ ±5% REEL 6 R33, R34, R55-R58 Any

SMD Resistor 0805 24 kΩ ±-5% REEL 3 R67, R95, R114 Any

SMD Resistor 0805 39 kΩ ±5% REEL 4 R94, R97-R99 Any




SMD Resistor 1206 0.15 Ω ±5% REEL 8 R30A-R30H Any

SMD Resistor 1206 100 Ω ±5% REEL 3 R74-R76 Any

SMD Resistor 1206 220 Ω ±5% REEL 1 R69 Any


SMD Resistor 1206 330 kΩ ±5% REEL 3 R111-R113 Any


SMD Resistor 1206 1 MkΩ ±5% REEL 4 R1, R2, R31, R32 Any

SMD Resistor 2512 0.1 Ω ±5% REEL 3 R77-R79 Any

NTC B57237S0229M000 2.2 Ω D15 1 RT1 EPCOS

MOV B72214-S0321-K101 320 V D14 1 RV1 EPCOS

MLCC 0805 NP0 50 V 22 pF-M REEL 3 C84-C86 Any

MLCC 0805 NP0 50 V 330 pF-M REEL 1 C43 Any

MLCC 0805 X7R 50 V 1 nF-M REEL 8 C74, C88, C90, C91,

C94, C97-C99 Any

MLCC 0805 X7R 50 V 10 nF-M REEL 1 C30 Any


MLCC 0805 X7R 50 V 47 nF-M REEL 2 C60, C65 Any

MLCC 0805 Y5V 25 V 100 nF-M REEL 8 C80, C82, C87, C89, C92, C93, C95, C96

Any

MLCC 0805 Y5V 25 V 220 nF-M REEL 4 C36-C39 Any

MLCC 0805 Y5V 25 V 470 nF-M REEL 1 C32 Any

MLCC 0805 Y5V 25 V 1 μF-M REEL 2 C81, C83 Any

MLCC 0805 Y5V 25 V 2.2 μF-M REEL 2 C35, C44 Any

MLCC 1206 Y5V 25 V 3.3 μF-M REEL 4 C70-C72, C75 Any

MLCC 1206 Y5V 1 KV 2.2 nF-M REEL 1 C63 Any

E-Capacitor 22 μF 35 V 5x11 mm Radial 1 C61 Any



E-Capacitor 220 μF 35 V D=8 mm Radial 2 C62, C64 Any

E-Capacitor 470 μF 450 V 35 x 45 mm

Snap in 3 C18, C19, C41 Any

Film-Capacitor 47 nF 1000 V MPP 1 C40 WIMA

Film-Capacitor 2.2 μF 630 V MEF 3 C3, C6, C42 Any

X-Capacitor 1 μF 300 VAC 2 C1, C2 Any

Y-Capacitor 2.2 nF 300 VAC 1 C14 Any

Y-Capacitor 4.7 nF 300 VAC 2 C4, C5 Any

Common Choke 744825510 10 mH 5 A 2 L1, L2 WURTH

Leaded Choke 7447076 150 μH 5 A 1 L3 WURTH

SMD Chip Inductor 7447905 0805 1 μH 2 L80, L81 WURTH

PFC Inductor 750341926 PQ3230 2 T1, T2 Midcom

LLC Transformer 750341927 PQ4040 1 T30 Midcom

Auxiliary Transformer 750341924 EE13-V 1 T60 Midcom

Pulse Transformer 750341925 EE13-V 2 T31, T32 Midcom




Connector 691101710003 5 mm 3-Pin 1 Motor WURTH

Table 5. BOM of PFC Module


IC Interleave BCM PFC Controller FAN9611MX

SOIC-16 1 U1 Fairchild Semiconductor

MOSFET FCPF36N60NT TO220F 2 Q1, Q2 Fairchild Semiconductor

Transistor MMBT2907A SOT-23 2 Q3, Q4 Fairchild Semiconductor

Diode FFPF15S60STU 15 A 600 V TO220F-2L 2 D5, D6 Fairchild Semiconductor

Diode 1N4148WS 0.3 A 70 V SOD-323 2 D3, D4 Fairchild Semiconductor

SMD Resistor 0805 10 Ω ±5% REEL 2 R10, R15 Any

SMD Resistor 0805 39 Ω ±5% REEL 2 R11, R16 Any

SMD Resistor 0805 1 kΩ ±5% REEL 2 R14, R19 Any




SMD Resistor 0805 47 kΩ ±5% REEL 3 R6, R27, R28 Any


SMD Resistor 1206 1 MkΩ ±5% REEL 6 R3, R4, R20, R21, R23,

R24 Any

SMD Resistor 2512 0.01 Ω ±5% REEL 2 R13, R18 Any

MLCC 0805 NP0 50 V 22 pF-M REEL 2 C7, C15 Any

MLCC 0805 X7R 50 V 1 nF-M REEL 4 C13, C17, C20, C21 Any

MLCC 0805 X7R 50 V 4.7 nF-M REEL 1 C8 Any


MLCC 0805 Y5V 25 V 220 nF-M REEL 1 C9 Any

MLCC 0805 Y5V 25 V 470 nF-M REEL 2 C10, C12 Any

MLCC 1206 Y5V 25 V 10 μF-M REEL 1 C16 Any



Related Resources

FCM8531 − MCU Embedded and Configurable 3-Phase PMSM / BLDC Motor Controller

FNB41560 − Motion SPM® 45 Series

FAN9611 − Interleaved Dual BCM PFC Controller

FAN7631 − 2nd Generation Controller for Half-Bridge Resonant Converters

FSL206MR − SMPS Power Switch

Reference Design Disclaimer Fairchild Semiconductor Corporation (“Fairchild”) provides these reference design services as a benefit to our customers. Fairchild has made a good faith attempt to build for the specifications provided or needed by the customer. Fairchild provides this product “as is” and without “recourse” and MAKES NO WARRANTY, EXPRESSED, IMPLIED OR OTHERWISE, INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Customer agrees to do its own testing of any Fairchild reference designs in order to ensure design meets the customer needs. Neither Fairchild nor Customer shall be liable for incidental or consequential damages, including but not limited to, the cost of labor, requalifications, rework charges, delay, lost profits, or loss of goodwill arising out of the sale, installation or use of any Fairchild product. Subject to the limitations herein, Fairchild will defend any suit or proceeding brought against Customer if it is based on a claim that any product furnished hereunder constitutes an infringement of any intellectual property rights. Fairchild must be notified promptly in writing and given full and complete authority, information and assistance (at Fairchild’s expense) for defense of the suit. Fairchild will pay damages and costs therein awarded against Customer but shall not be responsible for any compromise made without its consent. In no event shall Fairchild’s liability for all damages and costs (including the costs of the defense by Fairchild) exceed the contractual value of the products or services that are the subject of the lawsuit. In providing such defense, or in the event that such product is held to constitute infringement and the use of the product is enjoined, Fairchild, in its discretion, shall procure the right to continue using such product, or modify it so that it becomes noninfringing, or remove it and grant Customer a credit for the depreciated value thereof. Fairchild’s indemnity does not extend to claims of infringement arising from Fairchild’s compliance with Customer’s design, specifications and/or instructions, or the use of any product in combination with other products or in connection with a manufacturing or other process. The foregoing remedy is exclusive and constitutes Fairchild’s sole obligation for any claim of intellectual property infringement and Fairchild makes no warranty that products sold hereunder will not infringe any intellectual property rights. All solutions, designs, schematics, drawings, boards or other information provided by Fairchild to Customer are confidential and provided for Customer’s own use. Customer may not share any Fairchild materials with other semiconductor suppliers.

https://www.fairchildsemi.com/products/power-management/motor-control/bldc-pmsm-controller/FCM8531.html

https://www.fairchildsemi.com/products/power-management/motor-control/motion-spm-smart-power-modules/FNB41560.html

https://www.fairchildsemi.com/products/power-management/power-factor-correction/interleaved-pfc-controllers/FAN9611.html

https://www.fairchildsemi.com/products/power-management/offline-isolated-dc-dc/llc-resonant-and-asymmetric-half-bridg/FAN7631.html

https://www.fairchildsemi.com/products/power-management/offline-isolated-dc-dc/flyback-and-forward-pwm-controllers-wit/FSL206MR.html

Fairchild Reference Design RD-355

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