FARM™

Rev 6.9

vicorpower.com

Page 2 of 11

06/2017

800 927.9474

FARMxxxx

FARM1xxx

FARM2xxx

Parameter

Min

Typ

Max

Min

Typ

Max

Unit

Notes

Output power

0

500

0

750

Watts

0

750

0

1000

Watts

Efficiency

94

96

94

96

%

Output voltage

250

370

250

370

External hold-up capacitance

1,750

µF

2 – 3,300µF in series; HUB3300-S

1,100

µF

2 – 2,200µF in series; HUB2200-S

OUTPUT SPECIFICATIONS

Parameter

Min

Typ

Max

Unit

Notes

Operating input voltage

low range

90

132

Autoranging (doubler mode)

high range

180

264

Autoranging (bridge mode)

Input undervoltage

90

No damage

AC line frequency

47

63

Hz

C-Grade

47

880

Hz

T-Grade, H-Grade

Power factor

0.60

Dependent on line source impedance, hold up

capacitance and load.

Inrush current

30

Amps

INPUT SPECIFICATIONS (FARM1xxx, FARM2xxx)

Electrical Characteristics

Electrical characteristics apply over the full operating range of input voltage, output power and baseplate temperature, unless otherwise specified. All

temperatures refer to the operating temperature at the center of the baseplate. Specifications apply for AC mains having up to 5% total

harmonic distortion.

CONTROL PIN SPECIFICATIONS

Parameter

Min

Typ

Max

Unit

Notes

AC Bus OK (B OK)

Low state resistance

15

Ω

To negative output – Bus normal

Low state voltage

0.1

Bus normal 50mA max.

High state voltage

14.0

15.0

15.4

B OK true threshold

235

240

245

Output Bus voltage (see Figure 8)

B OK false threshold

200

205

210

Output Bus voltage

Module Enable (EN)

Low state resistance

15

Ω

To negative output – Converters disabled

Low state voltage

0.1

50mA max.

High state voltage

12

14

16

Enable threshold

235

240

245

Output bus voltage (see Figure 8)

Disable threshold

185

190

195

Output bus voltage

AC Bus OK - Module Enable,

12

14

16

AC Bus OK and Module Enable thresholds track

differential error*

* Tracking error between BUS OK and Enable thresholds