Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) AEO40x48 / ALO40x48 Single Output 8th Brick: Baseplate or Open-Frame Module The AEO40x48 / ALO40x48 series is Astec's High Current 8th Brick industry standard offering. Operating from an input voltage range of 36V to 75V, the series provides 7 configured outputs starting from 1.2V all the way up to 12V. It delivers up to 40A max current for 1.8V and lower at impressive levels of efficiency. It provides tight regulation and exhibits clean and monotonic output start up characteristics. The AEO_ALO series comes with industry standard features such as Input UVLO; non-latching OCP, OVP and OTP; Output Trim; Differential Remote Sense pins. Both baseplate (AEO) and open frame (ALO) construction are available as well as TH or SMT termination. With its wide operating temperature range of -40C to 85C ambient, the converters are deployable into almost any environment. Electrical Parameters Input Input Range Input Surge 36-75 VDC 100V / 100ms Control Enable TTL compatible (Positive or Negative Logic Enable Options) Output Special Features * * * * * * * * th Industry Standard 8 Brick Footprint Baseplate or Open frame construction Low Ripple and Noise Regulation to zero load High Capacitive Load Start-up Fixed Switching Frequency Industry standard features: Input UVLO; Enable; non-latching OVP, OCP and OTP; Output Trim, Differential Remote Sense Meets Basic Insulation Load Current Line/Load Regulation Ripple and Noise Output Voltage Adjust Range Transient Response Remote Sense Over Current Protection Over Voltage Protection Over Temperature Protection Up to 40A max (VO 1.8V) < 1% VO 15mVP-P typical at 1.8V 10% VO 2% Typical deviation 50% to 75% Load Change 20s settling time (Typ) +10%VO 120% max 130% max 110 C Environmental Specifications Safety * * * UL + cUL 60950, Recognized EN60950 through TUV-PS -40C to 85C Operating Temperature -40C to 125C Storage Temperature MTBF > 1 million hours MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 1 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Electrical Specifications ABSOLUTE MAXIMUM RATINGS Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of the device is converter is not implied at these or any other conditions in excess of those given in the operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability. Parameter Input Voltage Continuous Transient (100ms) I/O Isolation Input-to-Output 1 Operating Temperature Storage Temperature Operating Humidity Max Voltage at Enable Pin Max Output Power Device Symbol Min Typical Max Unit All Vin Vin trans -0.3 - - 75 100 Vdc All TA TSTG - - PO,MAX 1500 -40 -55 10 -0.6 - - 85 125 85 25 120.0 100.0 99.0 88.0 72.0 60.0 48.0 Vdc C C % Vdc W Symbol VIN Min 36 Typical 48 Max 75 Unit Vdc 33 31 - 34 32 - Vdc - - 36 34 TBA 3.5 3.5 3.3 TBA TBA TBA 4 - 10 30 mAp-p All All All All B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2) INPUT SPECIFICATION Parameter Operating Input Voltage Range Input Under-Voltage Lock-out T_ON Threshold T_OFF Threshold Max Input Current2 Standing Loss Input Ripple Current3 Device All All B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2) All Iin max All II1 MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) A W SHEET 2 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Output Voltage Set point VIN = VIN,MIN to VIN,MAX IO = IO,MAX Output Regulation Line VIN = VIN,MIN to VIN,MAX Load VIN = VIN,NOM IO = IO,MIN to IO,MAX Temp VIN = VIN,NOM; IO = IO,MAX4 Output Ripple and Noise5 Peak-to-Peak IO = IO,MAX; VIN =VIN,NOM; BWL = 20 MHz; TA =25 oC Output Current6 Output Current-limit Inception VO = 90% VO,NOM; TA = 25 C VIN = VIN,NOM Non-latching / auto-recovery External Load Capacitance IO = IO,MAX , resistive load ESR Device B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2) Symbol VO,SET Min 11.80 4.90 3.25 2.45 1.76 1.47 1.17 Typical 12.00 5.00 3.30 2.50 1.80 1.50 1.20 Max 12.20 5.10 3.35 2.55 1.84 1.53 1.23 Unit Vdc All - - 0.1 0.2 % - - 0.1 0.5 - - 0.5 1.0 - - IO 0 0 0 0 0 0 0 11.5 24.0 33.0 42.0 46.0 46.0 46.0 4 50 40 40 20 15 15 15 - 120 90 75 75 50 50 50 10 20 30 35 40 40 40 17.0 32.0 41.5 47.0 60.0 60.0 60.0 20,000 2000 10,000 10,000 - B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2)) B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2) B (12V0) A (5V0) F (3V3) G (2V5) Y (1V8) M (1V5) K (1V2) All B (12V0) A (5V0) F (3V3) MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) IO,OCP CEXT mVp-p A A F m SHEET 3 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Efficiency VIN = VIN,NOM; IO = IO,MAX TA = 25 C; Device B (12V) A (5.0V) F (3.3V) G (2.5V) Y (1.8V) M (1.5V) K (1.2V) Output Over Voltage Protection Non-latching / autorecovery B (12V) A (5.0V) F (3.3V) G (2.5V) Y (1.8V) M (1.5V) K (1.2V) Over Temperature Protection Autorecovery Input to Output Turn-On Delay VIN = VIN,NOM, IO = IO,MAX Enable to Output Turn-On Delay VIN = VIN,NOM, IO = IO,MAX Output Voltage Rise Time 10% to 90% of VO,NOM VIN = VIN,NOM, IO = IO,MAX Switching Frequency Output Voltage Remote Sensing Output Voltage Trim Range7 Output Voltage Overshoot Dynamic Response di/dt = 0.1 A/s AEO ALO All 5V, 12V All 5V, 12V Symbol VO,OVP - Min 91 92 90 89 87 85 84 Typical 92 93 91 90 88 86 85 Max 93 94 93 92 89 87 86 Unit % 13.8 5.8 3.8 2.9 2.1 1.8 1.4 14.4 6.0 4.0 3.0 2.2 1.9 1.5 15.0 6.2 4.3 3.2 2.4 2.0 1.6 V 110 110 - - 120 120 17 20 17 20 C 3.0 4.0 9.0 450 0 9.0 11.0 16.0 520 10 110 3 kHz %VO %VO %Vo Peak Deviation IO = 50% to 25% of Iomax ms ms All 5V 12V All All All All FSW - 380 90 - All - - 2 5 % All - - 20 100 s All - - 2 5 % All - - 20 100 s - Peak Deviation IO = 50% to 75% of Iomax Settling Time Vref = Vonom ms Settling Time Vref = Vonom MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 4 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Output Enable ON/OFF Open collector TTL compatible Device Symbol Positive Enable: Mod-ON Mod-OFF All All - Negative Enable: Mod-ON Mod-OFF All All - Note: Min Typical Max Unit 2.95 -0.50 - 20 1.20 V V -0.50 2.95 - 1.20 20 V V 1. Derating curves for both openframe and baseplate modules are based on derated component junction temperatures of 120oC or less where applicable. 2. An input line fuse is recommended for use (e.g. Little Fuse Type 314 - 6A max, 250V min). 3. External input capacitance required. See Input Ripple Current test measurement setup on Fig 1. 4. Max output current should meet the appropriate derating curves. 5. Refer to Fig 2 for output ripple measurement setup. 6. Appropriate Thermal Derating applies. 7. Refer to the output trim equations provided (Equation 1 and 2). SAFETY AGENCY / MATERIAL RATING / ISOLATION Parameter Safety Approval8 Device All Material Flammability Rating Parameter Input to Output Capacitance Input to output Resistance Input to Output Insulation Type All Device All All All Note: UL/cUL 60950, 35d Edition - Recognized (PENDING) EN 60950 through TUV (PENDING) UL94V-0 Symbol Min Typical Max Unit 1000 pF TBD Ohms Basic - 8. Safety approval for 3.3V version is complete. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 5 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Electrical Specifications (continued) TO OSCILLOSCOPE Vi(+) Ltest 12 uH BATTERY Cs 220 uF ESR < 0.1 OHM @ 20 C, 100 kHz 33 uF ESR < 0.7 OHM @ 20 C, 100 kHz Vi(-) Measure input reflected-ripple current with a simulated source inductance (Ltest) of 12 uH. Capacitor Cs offsets possible battery impedance. Measure current as shown above. Figure 1. Input Reflected Ripple Current Measurement Setup. COPPER STRIP Vo(+) 0.1 uF 10 uF SCOPE RESISTIVE LOAD Vo(-) Use a 0.1F @50V X7R ceramic capacitor (connected an inch away from the output terminals of the UUT) and a 10F @ 25V tantalum capacitor (2 inches away from the output terminals of the UUT). Scope measurement should be made using a BNC socket, positioned 3 inches away from output terminals of the converter. Figure 2. Peak to Peak Output Noise Measurement Setup. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 6 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Basic Operation and Features INPUT UNDER VOLTAGE LOCKOUT To prevent any instability to the converter, which may affect the end system, the converter have been designed to turn-on once VIN is in the voltage range of 33-36 VDC. Likewise, it has also been programmed to turn-off when VIN drops down to 31-34 VDC. OUTPUT VOLTAGE ADJUST/TRIM The converter comes with a TRIM pin (PIN 6), which is used to adjust the output by as much as 90% to 110% of its set point. This is achieved by connecting an external resistor as described below. To INCREASE the output, external Radj_up resistor should be connected between TRIM PIN (Pin6) and +SENSE PIN (Pin 7). Please refer to Equation (1) for the required external resistance and output adjust relationship. -Vin -Vout -Sense Enable Rload Vadj Radj_up +Sense Equation (1a): 1.5V to 12V Radj_up = 5.1 x Voset x (100 + %) 510 - - 10.2 1.225x % % +Vin +Vout Figure 3. External resistor configuration to increase the outputs Equation (1b): 1.2V Radj_up = 5.1 x Voset x (100 + %) 510 - - 10.2 0.6 x % % To DECREASE the output, external Radj_down resistor should be connected between TRIM pin (Pin 6) and -SENSE PIN (Pin 5). Please refer to Equation (2) for the required external resistance and output adjust relationship. -Vin -Sense Radj_down Enable Equation (2): Radj_down -Vout Vadj Rload +Sense 510 - 10.2 k % Where: % = percent change in output voltage MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) +Vin +Vout Figure 4. External resistor configuration to increase the outputs SHEET 7 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Basic Operation and Features (continued) OUTPUT ENABLE The converter comes with an Enable pin (PIN 2), which is primarily used to turn ON/OFF the converter. Both a Positive (no "N" suffix required) and a Negative (suffix "N" required) Enable Logic options are being offered. Please refer to Table 2 for the Part Numbering Scheme. For Positive Enable, the converter is turned on when the Enable pin is at logic HIGH or left open. The unit turns off when the Enable pin is at logic LOW or directly connected to -VIN. On the other hand, the Negative Enable version turns unit on when the Enable pin is at logic LOW or directly connected to -VIN. The unit turns off when the Enable pin is at Logic HIGH. OUTPUT OVER VOLTAGE PROTECTION (OVP) The Over Voltage Protection circuit is non-latching - auto recovery mode. The output of the converter is terminated under an OVP fault condition (Vo > OVP threshold). The converter will attempt to restart until the fault is removed. There is a 100ms lockout period between restart attempts. OVER CURRENT PROTECTION (OCP) The Over Current Protection is non-latching - auto recovery mode. The converter shuts down once the output current reaches the OCP range. The converter will attempt to restart until the fault is removed. There is a 100ms lockout period between restart attempts. OVER TEMPERATURE PROTECTION (OTP) The Over Temperature Protection circuit will shutdown the converter once the average PCB temperature (See Figure 90B for OTP reference sense point) reaches the OTP range. This feature prevents the unit from overheating and consequently going into thermal runaway, which may further damage the converter and the end system. Such overheating may be an effect of operation outside the given power thermal derating conditions. Restart is possible once the temperature of the sensed location drops to less than 110C. REMOTE SENSE The remote sense pins can be used to compensate for any voltage drops (per indicated max limits) that may occur along the connection between the output pins to the load. Pin 7 (+Sense) and Pin 5 (-Sense) should be connected to Pin 8 (+Vout) and Pin 4 (Return) respectively at the point where regulation is desired. The combination of remote sense and trim adjust cannot exceed 110% of VO. When output voltage is trimmed up (through remote sensing and/or trim pin), output current must be derated and maximum output power must not be exceeded. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 8 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 3.3V @ 30A Efficiency vs. Output Current T A=25C Power Dissipation vs. Output Current, TA=25C 14 95% Power Dissipation (Watts) 90% Efficiency 85% 80% 75% 70% 65% Vin = 36Vdc 60% Vin = 48Vdc 55% Vin = 36Vdc Vin = 48Vdc 10 Vin = 75Vdc 8 6 4 2 Vin = 75Vdc 0 50% 0 5 10 15 20 Output Current (Amps) 25 0 30 Figure 6. Efficiency vs. Load Current at minimum, nominal and high line, TA = 25C. 90% 12 power Dissipation (Watts) 14 85% 80% 75% 70% 65% Vin = 36Vdc Vin = 48Vdc 55% 10 15 20 Output Current (Amps) 25 30 Power Dissipation vs. Output Current, TA=85C 95% 60% 5 Figure 7. Power Dissipation vs. Load Current at minimum, nominal and high line, TA = 25C. Efficiency vs. Output Current, TA=85C Efficiency 12 Vin = 36Vdc Vin = 48Vdc Vin = 75Vdc 10 8 6 4 2 Vin = 75Vdc 0 50% 0 5 10 15 20 Output Current (Amps) 25 30 Figure 8. Efficiency vs. Load Current at minimum, nominal and high line, TA = 85C. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) 0 5 10 15 20 Output Current (Amps) 25 30 Figure 9. Power Dissipation vs. Load Current at minimum, nominal and high line, TA = 85C. SHEET 9 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 3.3V @ 30A (continued) Figure 10. 3.3V output startup characteristic at VIN = 48Vdc, IO = Full Load, TA = 25 C, CO = 0. Figure 11. 3.3V output ripple at VIN = 48Vdc, IO = Full Load, TA = 25 C. Figure 12. 3.3V output transient response 25% to 50% step change at VIN = 48Vdc, TA = 25 C, CO = 0. Figure 13. 3.3V output transient response 50% to 75% step change at VIN = 48Vdc, TA = 25 C, CO = 0. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 10 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 3.3V @ 30A (continued) AEO30F48 Current vs. Temperature 30 30 25 25 20 20 Current [A] 15 0 LFM (0 m/s) 10 15 0 LFM (0 m/s) 10 100 LFM (0.5m/s) 100 LFM (0.5m/s) 5 200 LFM (1m/s) 5 200 LFM (1m/s) 400 LFM (2 m/s) 400 LFM (2 m/s) 0 0 40 55 70 Ambient Temperature [C] 25 85 40 Figure 14. Output Current vs. Temperature for open frame version at VIN = 48Vdc (TJ 120C). -2.00E+01 Frequency (Hz) Figure 16. Typical output frequency spectrum at VIN = 48Vdc, IO = 100% Load, COUT = 0. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) 2.5E+07 1.6E+07 9.8E+06 6.2E+06 3.9E+06 2.4E+06 1.5E+06 9.6E+05 1.0E+06 8.0E+05 6.0E+05 4.0E+05 -1.00E+02 2.4E+05 960kHz -8.00E+01 1.5E+05 480kHz 2.0E+05 100 90 80 70 60 50 40 30 20 10 0 db/uV -4.00E+01 0.0E+00 85 ALO30F48 Conducted EMI 0.00E+00 dBm 70 Figure 15. Output Current vs. Temperature for baseplate version at VIN = 48Vdc (TJ 120C). Output Frequency Spectrum, 0 - 1MHz -6.00E+01 55 Ambient Temperature [C] 6.0E+05 25 3.8E+05 Current [A] ALO30F48 Current vs. Temperature Frequency Figure 17. 3.3V Open frame Conducted EMI per Filter defined in Fig 28. VIN = 48Vdc, IO = 100% Resistive Load, CIN =220uF, COUT = 4700uF, TA = 25C. SHEET 11 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 5V @ 20A Efficiency vs. Output Current, TA=25C Power Dissipation vs. Output Current, TA=25C 95% 10 90% Power Dissipation [W] Vin = 36Vdc Efficiency 85% 80% 75% 70% 65% Vin = 36Vdc 60% Vin = 48Vdc 8 Vin = 48Vdc Vin = 75Vdc 6 4 2 Vin = 75Vdc 55% 0 50% 0 4 8 12 16 Output Current (Amps) 0 20 Figure 18. Efficiency vs. Load Current at minimum, nom and high line, TA = 25C. 20 Figure 19. Power Dissipation vs. Load Current at min, nominal and high line, TA = 25C. Efficiency vs. Output Current, T A = 85C Power Dissipation vs. Output Current, TA=85C 95% 10 90% Power Dissipation (W) Vin = 36Vdc 85% Efficiency 5 10 15 Output Current (Amps) 80% 75% 70% 65% Vin = 36Vdc 60% Vin = 48Vdc 55% Vin = 75Vdc 50% 8 Vin = 48Vdc Vin = 75Vdc 6 4 2 0 0 4 8 12 16 Output Current (Amps) Figure 20. Efficiency vs. Load Current at minimum, nom and high line, TA = 85C. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) 20 0 5 10 15 Output Current (Amps) 20 Figure 21. Power Dissipation vs. Load Current at minimum, nominal and high line, TA = 85C. SHEET 12 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 5V @ 20A (continued) Figure 22. 5V output startup characteristic at VIN = 48Vdc, IO = Full Load, TA = 25 C, CO = 0. Figure 23. 5V output ripple at VIN = 48Vdc, IO = Full Load, TA = 25 C. Figure 24. 5V output transient response 25% to 50% step change at VIN = 48Vdc, TA = 25 C, CO = 0. Figure 25. 5V output transient response 50% to 75% step change at VIN = 48Vdc, TA = 25 C, CO = 0. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 13 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Performance Curves 5V @ 20A (continued) ALO20A48 Current vs. Temperature Output Current (Amps) 20 15 TBA 10 0 LFM (0 m/s) 100 LFM (0.5m/s) 5 200 LFM (1m/s) 400 LFM (3 m/s) 0 25 40 55 Temperature (C) 70 85 Figure 26. Output Current vs. Temperature for open frame version at VIN = 48Vdc (TJ 120C). Figure 27. Output Current vs. Temperature for baseplate version at VIN = 48Vdc (TJ 120C). 2.5E+07 1.5E+07 9.7E+06 6.1E+06 3.9E+06 2.4E+06 1.5E+06 9.6E+05 6.0E+05 3.8E+05 2.4E+05 1.5E+05 db/uV ALO20A48 Conducted EMI 100 90 80 70 60 50 40 30 20 10 0 Frequency Figure 28. Typical output frequency spectrum (0 - 500kHz) at VIN = 48Vdc, IO = 50% Load, COUT = 0. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) Figure 29. 5V Open frame Conducted EMI per Filter defined in Fig 28. VIN = 48Vdc, IO = 50% Resistive Load, TA = 25C. SHEET 14 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Input Filter for FCC Class B Conducted Noise A reference design for an input filter that can provide FCC Class B conducted noise levels is shown below (See Figure 89). Two common mode connected inductors are used in the circuit along with balanced bypass capacitors to shunt common mode currents into the ground plane. Shunting noise current back to the converter reduces the amount of energy reaching the input LISN for measurement. The application circuit shown has an earth ground (frame ground) connected to the converter output (-) terminal. Such a configuration is common practice to accommodate safety agency requirements. Grounding an output terminal results in much higher conducted emissions as measured at the input LISN because a hard path for common mode current back to the LISN is created by the frame ground. "Floating" loads generally result in much lower measured emissions. The electrical equivalent of a floating load, for EMI measurement purposes, can be created by grounding the converter output (load) through a suitably sized inductor(s) while maintaining the necessary safety bonding. FILTER PARTS LIST CKT CODE Inductor X-Cap Y-Cap DESCRIPTION CTX01-15091 Cooper Electronic Technologies 0.47 F X 4pcs 22 nF X 4 pcs Figure 89: Class B Filter Circuit MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 15 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Mechanical Specifications Parameter Dimension Device All Symbol L W H H AEO ALO Weight Min - Typ 2.30 [58.42] 1.48 [37.59] - Max 0.40 [10.1] 0.32 [8.2] Unit in [ mm ] in [ mm ] in [ mm ] - 34.02 [1.2] 22.68 [0.8] - g [oz] g [oz] AEO ALO PIN ASSIGNMENT 1 2 3 4 +VIN ENABLE -VIN -Vo 5 6 7 8 2.30 [58.4] 0.90 [22.9] 2.30 [58.4] E - Vin + Output + Sense Trim -Sense -Output + Vin + Output + Sense Trim -Sense -Output + Vin -SENSE TRIM +SENSE +Vo 0.90 [22.9] E - Vin PIN SIDE DOWN PIN SIDE DOWN 0.32 [8.2] 0.15 [3.9] 0.31 [7.9] 0.15 [3.8] 0.45 [11.4] 0.15 [3.8] 2.00 [50.8] 0.45 [11.4] 0.60 [15.2] 0.75 [19.0] 2.19 [55.5] 0.30 [7.6] THRU-HOLE 0.15 [3.8] 0.45 [11.4] 0.75 [19.0] 0.15 [3.8] 0.30 [7.6] 0.45 [11.4] 0.60 [15.2] 0.75 [19.1] 0.75 [19.1] SURFACE MOUNT Figure 90A. ALO (Openframe) Mechanical outline. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 16 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) Mechanical Specifications 2.30 [58.4] 2.30 [58.4] 0.90 [22.9] E - Vin + Output + Sense Trim -Sense -Output + Vin + Output + Sense Trim -Sense -Output + Vin 0.90 [22.9] E - Vin PIN SIDE DOWN PIN SIDE DOWN 0.15 [3.9] 0.40 [10.1] 0.23 [5.8] 0.15 [3.8] 0.15 [3.8] 2.00 [50.8] OTP Reference Sense Points: Vicinity of Pin 2- Enable Pin 0.30 [7.6] 0.45 [11.4] 0.45 [11.4] 0.39 [9.8] 0.75 [19.0] 0.15 [3.8] 0.15 [3.8] 0.60 [15.2] 0.75 [19.0] 0.75 [19.1] THRU-HOLE 0.30 [7.6] 2.19 [55.5] 0.45 [11.4] 0.60 [15.2] 0.45 [11.4] 0.75 [19.1] SURFACE MOUNT Figure 90B. AEO (Baseplate) Mechanical Outline. 2.30 [58.4] 2.19 [55.7] 0.15 [3.8] 0.15 [3.8] 0.30 [7.6] 0.15 [3.8] 0.15 [3.8] 0.30 [7.6] 0.30 [7.6] 0.90 [22.9] 0.124 [3.15] C L 0.30 [7.6] 0.092 [2.34] NOTES: ALL DIMENSIONS ARE IN INCHES (MILLIMETERS) MECHANICAL TOLERANCE .002(0.5) RECOMMENDED SURFACE MOUNT PADS Min: 0.080 X 0.112 [2.03 x 2.84 ] Max: 0.092 X 0.124 [2.34 x 3.15 ] Figure 91. Recommended Pad layout for SMT (Suffix "S") version. MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 17 OF 18 Technical Reference Notes AEO40x48 / ALO40x48 Series (Single Output 8th Brick) RECOMMENDED REFLOW PROFILE SOLDERING CONSIDERATIONS 240 PEAK TEMPERATURE 200C - 230C 220 The AEO (baseplate) series converters are compatible with standard wave soldering techniques. When wave soldering, the converter pins should be preheated for 20-3o sec at 110C and wave soldered at 260C for less than 10 sec. TEMPERATURE (deg C) 200 When hand soldering, the iron temperature should be maintained at 425C and applied to the converter pins for less than 5 seconds. Longer exposure can cause internal damage to the converter. Cleaning can be performed with cleaning solvent IPA or with water. 183C 180 REFLOW ZONE 160 140 120 < 80 sec 110C PRE-HEAT ZONE 120 - 180 sec 100 80 SLOPE < 4C /sec 60 40 20 0 0 30 60 90 120 150 180 210 240 270 300 TIME (seconds) For SMT terminated modules, refer to Figure 92 for the recommended reflow profile. Figure 92. Recommended reflow profile for SMT modules. TABLE 2: PART NUMBERING SCHEME CONSTRUCTION A W L = Open frame E = Baseplate O/P CURRENT O O/P VOLTAGE Vin y 48 xx 10 = 10A 20 = 20A 30 = 30A 35 = 35A 40 = 40A 40 = 40A 40 = 40A Note: 1) For Through Hole termination: B A F G Y M K = = = = = = = 12V 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V TH PIN LENGTH Enable N N = Negative Blank = Positive - TERMINATION 6 6 = 3.7mm blank = 5mm default S S = SMT Termination (option exists for 30A and below) Blank = (TH) thru-hole - Std pin length is 5mm nominal (min: 0.189 [4.8]; max: 0.205 [5.2] / in [mm]) - "-6" option is 3.7mm nominal (min: 0.137 [3.5]; max: 0.152 [3.9] / in [mm]) - Pins 4&8 diameter: = 0.062 [1.57], others: = 0.04 [1.0] (6X) Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com MODEL: AEO40x48 / ALO40x48 SERIES JANUARY 13, 2005 - REVISION A2 (PRELIMINARY) SHEET 18 OF 18