DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 14
Technical content
(888) 597-WALL www.wallindustries.com 1 of 14 TECHNICAL DATASHEET Rev. D FA12S12-300 300W DC-DC Converter 10-36 Vdc Input 12Vdc Output at 25A Full-Brick Package Features: 88% Efficient at Full Load 90% Efficiency at 1/2 Load Fast Transient Response Operation to No Load Output Trim ±10% Remote ON/OFF (Active High/Low) Remote Sense Compensation Delivers a Continuous 150W at 25°C with No Air / No Heatsink Very Low Output Ripple Fixed Switching Frequency Output Over Current Foldback Output Short Circuit Protection Over Temperature Protection 1500 V Isolation 100% Burn In Synchronizable Description: The FA series is a high-density full brick con verter that incorporates the desired features required in today’s demanding low voltage bus ap plications. Its unique dual interleaved phase- shifted topology minimizes both input and output noise. When performance, reliability, and low cost are needed, the FA series delivers.
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev D FA12S12-300 (888) 597-WALL www.wallindustries.com Page 2 of 14 Technical Specifications MMooddeell NNoo.. FA12S12-300 All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION Related condition Min Nom Max Unit Switching Frequency - 600 - KHZ INPUT (Vin) Operating Voltage Range 10 12 36 Vdc UVLO Turn On at 9.5 9.7 10 Vdc UVLO Turn Off at 9.0 9.25 9.5 Vdc UVLO Hysterisis - 0.5 - Vdc Maximum Input Current (Graph 3) Low Line - 34.8 - A No Load Input Current (Graph 3) No Load - 0.10 - A Input Current under “Remote Off” - 1 - mA Reflected Ripple Current With L-C filter as shown in Fig. 7. - 20 - mA Input Surge Voltage 100 mS - - 50 Vdc EFFICIENCY (Graph 1) Io=25A - 86 - % OUTPUT (Vo) Voltage Set Point ±Sense shorted to ±Vout 11.88 -1% 12.00 12.12 +1% Vdc Voltage Adjustment (Table1) Max Output limited to 300W 10.8 -10% 13.2 +10% Vdc Load Regulation ±Sense shorted to ±Vout - 0.05 0.2 % Line Regulation ±Sense shorted to ±Vout - 0.05 0.2 % Temperature Drift - 0.01 0.02 % / °C Remote Sense Compensation Max Output limited to 300W (max. drop in each + and – output trace) - - 1 Vdc Ripple (Photo4,5,6) 0.1µF Ceramic & 10µF Tantalum - 50 120 mV p-p Spikes (Photo 4,5,6) 0.1µF Ceramic & 10µF Tantalum - 50 120 mV p-p Current Rated maximum output current 0 - 25 A Current Limit Power Limited-Dependent upon SENSE compensation and TRIM adjustment - 32.5 - A Over Voltage Limit 13.5 15 16.5 Vdc DYNAMIC RESPONSE Load step / V (Photo7) 50% to 100% Io - 0.6 - V Recovery Time (Photo 7) Recovery to within 1% Nominal Vout - 0.4 - mS Turn On Delay (Photo 1) From Vin (min) to Vout (nom) - 50 - mS Turn On Overshoot (Photo 1,2) Full Load Resistive - 0.0 - % Hold Up Time (Photo 3) 0 - - mS REMOTE ON/OFF Active High or Active Low (See page 14 for ordering details) Remote ON – Positive logic TTL high or Open-circuit 2.5 - 5.0 Vdc Remote OFF – Positive logic TTL Low - - 2.0 Vdc Remote ON pin Floating - Positive logic Over Operating Voltage Range 4.4 - 5.0 Vdc ION/OFF Sink current - Positive logic VON/OFF =0V, Vin=75V - - 1.0 mA Remote ON – Negative logic Max Low to Enable - - 2.0 Vdc Remote OFF – Negative logic Min High to Disable 2.5 - 5.0 Vdc Remote ON/OFF pin Floating – Negative logic Over Operating Voltage Range 4.4 - 4.7 ION/OFF Sink to pull low – Negative logic VON/OFF =0V, Vin=75V - - 1 mA ION/OFF Source to drive high – Active High or Low - - 1 µA Turn On Delay – (Photo 2) Enabled - 40 - mS Turn Off Delay – (Photo 3) Disabled - - 10 µS ISOLATION Input-Output 1 minute 1500 - - Vdc Isolation Resistance 1 - - GΩ Isolation Capacitance - 0.010 - µF THERMAL Ambient (Graph 2) Max. Ambient limited by Derating Curves (Graph 2) -40 25 Graph 2 °C Over Temperature Protection Self Resetting - 110 - °C Storage Temperature Ambient -55 - 125 °C MTBF Calculated Using Bellcore TR-332 Method 1 case 3 2,212,456 Hours MECHANICAL See Figure 1 Weight - 318 - g
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev D FA12S12-300 (888) 597-WALL www.wallindustries.com Page 3 of 14 Figure 1: Mechanical Dimensions Unit: inches [mm] SEE NOTE-1&3 STANDOFFS ONLY PIN LENGTH FROM .20 MIN [5.1 MIN] TO STANDOFFS ONLY .000 [0.00] HEATSINK SUPPLIED ATTACHED WITH THERMAL INTERFACE MATERIAL. HEATSINK HAS ±.005Ø.120 ±0.13Ø3.05 THRU HOLE 6X .02 [0.4] 6X REF COVER TO STANDOFF.84±.04 [21.3±1.0] SERIAL NO: DATE CODE M ODEL NAM E XXXX EXETER, NH 03833DC/DC CONVERTER W ALL INDUSTRIES R LABEL NONMETALLIC INSULATOR 2X .015 [0.38] SEE NOTE-1&3 STANDOFFS ONLY PIN LENGTH FROM .20 MIN [5.1 MIN]TO STANDOFFS ONLY .02 -.03 2.40 61.0 -0.8 0.5 6.000 [0.00] .400 [10.16] .700 [17.78] 1.000 [25.40] 1.400 [35.56] 1.800 [45.72] 3.600 [91.44] 4.200 [106.68] 2.100 [53.34] .35 [8.9] .50 [12.7] .20± .03 [5.1± 0.8] +.03.50 -.00 -0.0 +0.812.7 117.0+.024.60 -.03 +0.5 -0.8 SEE NOTE-4 DOT DENOTES PIN-1 .02 [0.4] 6X REF COVER TO STANDOFF +.02.30 -.03 -0.6 +0.57.6 NOTES: 1. PIN TO PIN TOLERANCE ± .01 [±0.3], PIN DIAMETER TOLERANCE: ±.005 [±0.13]. 2. CASE MATERIAL: .040 [1.02] THICK, ALUMINUM ALLOY 3003-0, PER: QQA 250/2. 3. UNLESS OTHERWISE SPECIFIED. TO ORDER: 4. UNIT COMES WITH EITHER 3M x 0.5 THREADED THRU INSERTS OR FOR Ø.125 THRU-HOLE ADD: “TH” SUFFIX TO MODEL PART NUMBER. EXAMPLE: FA12S5-300TH 5. FOR HEAT SINK ADD: “HS” SUFFIX TO MODEL PART NUMBER. EXAMPLE: FA12S5-300HS. 6. OPTIONAL CHASSIS MOUNT VERSION AVAILABLE (SEE CMFA SERIES). PIN DESIGNATION PIN Ø 2 +SENSE Ø.040 [1.02] 3 TRIM Ø.040 [1.02] 4 -SENSE Ø.040 [1.02] 6 +IN Ø.081 [2.06] 7 SD Ø.040 [1.02] 8 SYNC Ø.040 [1.02] 9 -IN Ø.081 [2.06] SEE NOTE 5 HEATSINK STANDARD
voltage falls below the UVLO turn-off limit. There is approximately 0.5V hysteresis in the UVLO circuit. will “hiccup”- (short) or “fold back” - (over current). The converter output will recover once the short or over current fault is removed. converter will automatically recover once it has sufficiently cooled. output in order reduce base ripple, and improve the load transient peak-to-peak voltage deviation. desired to use the Remotes Sense feature, the –Sense and +Sense pins should be connected to the -Vout and +Vout pins respectively. It is required that the input to the converter be supplied with a maximum 50 A, 250 V rated fuse. the FA converter is an SELV source. Active=TTL High (no suffix) or Active=TTL Low (R suffix), see order details on page 14. For Remote ON/OFF limits, see page 2. Figure 2. Remote (L/E)
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev D FA12S12-300 (888) 597-WALL www.wallindustries.com Page 6 of 14 Graph 1: FA12S12-300 Efficiency vs. Output Current 40.0% 50.0% 60.0% 70.0% 80.0% 90.0% 100.0% Output Current Efficiency Vin=10.0V Vin=12.0V Vin=36.0V Graph 2: FA12S12-300 Max Ambient vs. Output Power 100 150 200 250 300 - 4 0 - 3 0 - 2 0 - 1 0 0 1 02 03 04 05 06 07 08 09 0 1 0 0 1 1 0 AMBIENT TEMPERATURE (DEG. C.) OUTPUT POWER (WATTS)
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
Note: When trimming the output high, Io vs. Ambient is derated by power. i.e.: from Graph 2, find the maximum current at the desired ambient and airflow, and multiply this current by the nominal voltage (12V) to get the maximum power. Divide this power by the desired trimmed high voltage to get the maximum current at that ambient. When trimming low, the maximum current stays the same as shown in graph 2.
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 7 of 14 Graph 3: Input Current vs. Input Voltage 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE INPUT CURRENT (AMPS) Io=6.25A Io=12.5A Io=18.75A Io=25.0A Graph 4: Power Dissipation vs. Input Voltage 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE POWER DISSIPATION (WATTS) Io=6.25A Io=12.5A Io=18.75A Io=25.0A
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 8 of 14 Graph 5: Input Current Characteristics at Light Load 0.5 1.5 10 15 20 25 30 35 40 Input voltage Input Current No Load 0.25A 0.50A 0.75A 1.00A
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 9 of 14 Photo 1: Full load (resistive) startup. Ch.1 = Vin (5V/div), CH.2 = Vout (5V/div). Photo 2: Full load (resistive) startup, via logic enable. Ch. 1 = L/E (1V /div), Ch.2 = Vout (5V/div). Photo 3: Full load turn-off, via logic enable. Ch.1 = L/E (2V/div), Ch.2 = Vout (5V/div). Photo 4: Output ripple, 10Vin, full load. 20mV / div.
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 10 of 14 Photo 5. Output ripple, 12Vin, full load. 20mV / div. Photo 6: . Output ripple, 36Vin, full load. 50mV / div. Photo 7: Transient Response 50% to 100% Vin=24V, Iout = 12.5A to 25A @ .5V/ Div Cout=0.1uF Ceramic + 10uF Tantalum Photo 8: Overload output current, 0.16 Ohm impedance. 24Vin, 12.5A / div.
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 13 of 14 Paralleling Converters The FA series converters may be paralleled both for redundancy and for higher output current. However, in order to do this, a high- current, low Vf, Schottky diode must be placed at the +Vo pin of each supply as shown in Figure 9. To improve sharing, tie the two TRIM pins together. The converters may be trimmed by adding a resistor value from each TRIM pin to ±RS pin, or alternatively, a single resistor of half the value from the common TRIM pins to the common ±RS pins. Figure 9: Paralleling Converters
TECHNICAL DATASHEET WALL INDUSTRIES, INC. Rev C FA12S12-300 (888) 597-WALL www.wallindustries.com Page 14 of 14 Ordering Information: Company Information: Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2008 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: (603)778-2300 Toll Free: (888)587-9255 Fax: (603)778-9797 E-mail: sales@wallindustries.com Web: www.wallindustries.com Address: 5 Watson Brook Rd. Exeter, NH 03833 Part Number Example: FA 12 S 12 – 300 R TH – HS Options Blank Active High Enable R Active Low Enable Series Designation Nominal Input Voltage Single Output Nominal Output Voltage Maximum Output Power Options Blank No Heat Sink HS With Heat Sink Options Blank Threaded Hole TH Through Hole