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rev. page
1 of 4
page date 1/11/2008 date
PART NUMBER: VFB200
DESCRIPTION: full brick dc-dc converter
features
*100 - 200W isolated output *efficiency to 85% *300KHz switching frequency *2:1 input range *regulated outputs *continuous short circuit protection *industry standard half-brick package
MODEL
VFB200-D48-S2R5 VFB200-D48-S3R3 VFB200-D48-S5 VFB200-D48-S12 VFB200-D48-S15 VFB200-D48-S24 VFB200-D48-S28 VFB200-D48-S48
note:
input voltage (V dc)
output voltage (V dc)
output current
input current min. max.
efficiency %
36~75 36~75 36~75 36~75 36~75 36~75 36~75 36~75
1. nominal input voltage is 48 V dc
2.5 3.3 5 12 15 24 28 48
40 A 40 A 40 A 17 A 13.3 A 8.4 A 7.14 A 4.2 A
25 25 25 25 25 25 25 25
mA mA mA mA mA mA mA mA
2.8 A 3.5 A 5A 5A 5A 5A 5A 5A
74 79 83 85 85 85 85 85
Pin Connection
Pin 1. 2. 3. 4. 5. 6. 7. 8. 9. Function +Vin ON/OFF Case -Vin -Vout -Sense Trim +Sense +Vout
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page date
2 of 4
1/11/2008
PART NUMBER: VFB200
DESCRIPTION: full brick dc-dc converter
INPUT
parameter input voltage under voltage lockout conditions/description min 36 nom 48 32.5 V PI Type max 75 units V dc 48 Vin power up 48 Vin power down positive logic remote On/Off3 and 4 input filter
OUTPUT
parameter voltage accuracy transient response External Trim Adj. Range Ripple & Noise conditions/description 25% Step Load Change 10% 20MHz BW 2.5V 3.3V 5V, 100mV pk-pk, max. 20MHz BW 12V & 15V, 150mV pk-pk, max. 20MHz BW 24V & 48V, 240mV/480mV pk-pk, max. 0.03 Continuous 0.2 0.2 140 150 40 60 100 mV RMS mV RMS mV RMS %/C % % % % min nom max 1% 500 units /sec.
Temperature Coefficient Short Circuit Protection Line Regulation1 Load Regulation2 Over Voltage Protection Trip Range, % Vo nom Current Limit Nominal Output
115 110
GENERAL SPECIFICATIONS
parameter efficiency isolation voltage conditions/description see table input/output input/case output/case min 1500 1500 1500 10 7 300 -40 40 100 100 105 nom max units V dc V dc V dc KHz C C C
isolation resistance switching frequency operating case temperature storage temperature thermal shutdown, case temp dimensions 4.6 x 2.4 x 0.5 inches (116.8 x 61.0 x 12.7mm) case material aluminum baseplate with plastic case
notes: 1. measured from high line to low line 2. measured from full load to zero load 3. logic compatibility: open collector ref to-input module ON: open circuit module OFF: <0.8 V dc 4. suffix "N" to the model number with negative logic remote ON/OFF
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page date
3 of 4
1/11/2008
PART NUMBER: VFB200
DESCRIPTION: full brick dc-dc converter
APPLICATION NOTES
Derating: The operating case temperature range of the VFB200 series is -40C to +100C. When operating the VFB200, proper derating or cooling is needed. Following is the derating curve of VFB200 without heat sink.
Where: The power dissapation (Pd) is P d= Pi - Po = Po (1-n)/n The thermal resistance are listed below.
The temperature rise (dT): dT = Pd * Rca
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page date
4 of 4
1/11/2008
PART NUMBER: VFB200
DESCRIPTION: full brick dc-dc converter
REMOTE ON/OFF CONTROL
The VFB200 series allows the user to switch the module on and off electronically with the remote on/off feature. The VFB200 series is available with "positive logic" or "negative logic" options.
EXTERNAL OUTPUT TRIMMING
Output may optionally be externally trimmed (10%) with a fixed resistor or an external trimpot as shown.
OUTPUT NOISE
The output noise is measured with a 10F tantalum capacitor and a 1.0F ceramic capacitor across the output.
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382

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