MIL-COTS PFC Front End

Rev 1.3

vicorpower.com

Page 4 of 9

01/2014

800 927.9474

Granite Power

GP-MPFC1H21

Not Recommended for New Designs

Baseplate Temp °C

Power De-Rating

102-114 VAC

115-196 VAC

197-264 VAC

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

25

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100

Figure 1 — Module power de-rating for input voltage at baseplate temperature

PFC

BRICK

DC/DC

CONVERTER

R1 = 249 Ohm 0.25 W

C1 = ALEL 1500 µF min 3000 µF max 450 V

C2, C3 = 0.1µF 50V Ceramic

D1 = 800 V Diode

D2 = 12 V 0.5 W Zener

D3 = 0.2A 40V SCHOTTKY

F2 = 3A or 5A PC-Tron (see DC-DC safety approvals for details)

C2

0.1uF

50 V

C3

0.1uF

50 V

249R

1/4W

D3

200mA

F2

3A / 5A

R1

D1

800 V

D2

12 V

PC

PR

+In

–In

+Out

MOD EN

N/C3

N/C2

•

•

••

••

••

•

•

C1

pp

RT1

•

R2

249R 1/4W

= 249 Ohm 0.25 W

RT1*= Cantherm F20BE068505 (85C)

F20BE0610005 (100C)

*Note: RT1 must be placed as close to PFC baseplate as possible

Figure 2 — Mod EN protection circuit and Optional Thermal Safety Ckt

[a] Optional, not required

•

>

>

EMI

Filter

PFC

BRICK

JMK

P/N FF-2137B-13

NOTE:

C = 4.7nF

C1 and F2 are the same as those shown in Figure 2

F1 = Bussman ABC-15 UL-listed 250 V Fast Acting

C

C

C1

F1

F2

Line

Neutral

Line

Neutral

+

–

MOD EN

N/C

N/C

Protection

Figure 2

+

–

PC

PR

V375x

•

Figure 3— Typical Connection diagram