ALQ07 ASTEC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 28
Technical content
Datasheet sections
Features
- 2.28 ”X1.45’’ X0.43”package
- Basic isolation
- High power density
- 2:1 wide input of 36-75V
- CNT function
- Trim function
- Input under-voltage lockout
- Output over-current protection
- Output over-voltage protection
- Wide operating case temperature range
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Module Numbering A L Q 07 F M 48 N- 7 1 2 3 4 5 6 7 8 Explanation: 1－Series name 2－Low profile 3－Quarter brick 4－Output current: 7A 5－Dual output: F: 3.3V, M: 1.5V, Y: 1.8V 6－Input voltage range: 36V to 72V 7—CNT logic, N---Negative enabl e, default is positive enable 8—Pin length: 6---3.80mm 8---2.80mm 7---5.8mm By default: 5mm
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage and temperature conditions. Standard test condition on a single unit is as following: Ta(ambient): 25 oC + V i n : 4 8 V ±2% -Vin: return pin for +Vin CNT: connect to COM for negative logic produce open for positive logic produce +Vo1, +Vo2: connect to load COM: connect to load (return) Trim(Vadj): open Input Specifications Parameter Device Symbol Min Typ. Max Unit Operating Input Voltage All V I 36 48 75 Vdc Maximum Input Current (VI = 0 to VI,max, Io = Io,max) All I I,max - - 1 A Input Reflected-ripple Current (5Hz to 20MHz: 12μH source impedance: Ta = 25 ºC.) All I I - - 10 mAp-p No Load Input Power (VI = VI,nom ) All - - - 3.3 W CAUTION: This power module is not internally fused. An input line fuse must always be used.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the IPS. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Device Symbol Min Typ. Max Unit Continuous: All V I 0 - 80 Vdc Input Voltage Transient (100ms) All V I, trans 0 - 100 Vdc Operating Ambient Temperature All Ta -40 - 60 ºC Storage Temperature All T STG -55 - 125 ºC Operating Humidity All - - - 95 % Basic Input-Output Isolation (Conditions: 50µA for 5 sec, slew rate of 1500V/10sec) All - - - 1,500 Vdc Output Power All P o,max - - 30 W
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Output Specifications Parameter Device Symbol Min Typ Max Unit Ripple Noise Output Ripple and Noise (When measure ripple, noise and dynamic response, external 10uF tantalum capacitor and 0.1uF ceramic capacitor required for each output.) Peak-to-Peak (5 Hz to 20 MHz) All Vo1 Vo2 mVp-p mVp-p External Load Capacitance All Vo1 Vo2 4000 4000 µF µF ALQ07FY Vo1set Vo2set 3.25 1.77 3.3 1.8 3.35 1.83 Vdc Vdc ALQ07FM Vo1set Vo2set 3.25 1.48 3.3 1.5 3.35 1.52 Vdc Vdc Output Voltage Setpoint (Rating input, 3.3V@4A+1.8V@6A, .2V@6A, Ta = 25 ºC ) ALQ07FK Vo1set Vo2set 3.25 1.18 3.3 1.2 3.35 1.22 Vdc Vdc Cross regulation (Any one output Vs. others) All 0.5 %V o,nom All (Line Regulation) Vo1 Vo2 mV mV Output Regulation: Line (Vi=V i,min to Vi,max) Load (Io = Io,min to Io,max, other Io =50%Io,nom) (Ta=-40 ºC~60ºC) All (Load Regulation) Vo1 Vo2 mV mV Rated Output Current (Io1+Io2≤10A) All Io1 Io2 A A Output Current Protection (When unit is shut down) All I o1+ Io2 11 - 15 A ALQ07FY - 80 82 % ALQ07FM - 80 82 % Efficiency (Rating input,3.3V@6A, ALQ07FK - 80 82 % Switching Frequency All - 360 kHz
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Output Specifications (Cont.) Parameter Device Symbol Min Typ Max Unit Load Change from Io = 50% to 75% of Io,max ,when the other output current is 50% Io.nom All - - - 5 %V o Peak Deviation Settling Time (to Vo,nom) All - - - 200 µsec Load Change from Io = 50% to 25% of Io,max ,when the other output current is 50% Io.nom. All - - - 5 %V o Dynamic Response*: (∆Io/∆t = 1A/µs; VI = VI,nom ; Ta = 25°C) Peak Deviation Settling Time (to Vo,nom ) All - - - 200 µsec Turn-On Time All - 5 10 msec Vo1 0 3 %V o Output Voltage Overshoot (3.3V@6A,1.8V@4A, 3.3V@6A,1.5V@4A, 3.3V@6A,1.2V@4A Ta = 25°C) All Vo2 0 5 %V o Note: The output capacitance 220uF+220uF tantalum (Each capacitor ESR＜100m Ω)may be used to meet the specified dynamic response.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Feature Specifications Parameter Device Symbol Min Typ Max Unit Logic Low All -0.7 - 1.8 V Enable pin voltage Logic High All 3.5 - 12 V Enable pin current (Logic Low) All - - 2.0 mA Output Voltage Adjustment Range All Vo2 80 - 110 %Vonom Over Temperature Protect All T 101 115 ℃ Output Over-voltage (latch) All Vo1 Vo2(1.8V) Vo2(1.5V) Vo2(1.2V) 3.90 2.20 1.80 1.45 5.00 2.60 2.26 1.80 V V V V Turn-on Point All - 31 34 36 V Under-voltage Lockout Turn-off Point All - 30 33 35 V Isolation Capacitance All - - 1500 - pF Isolation Resistance All - 10 - - MΩ Calculated MTBF (Io = Io,max ; Ta = 25°C) All - - 1,800,000 - Hours Weight All - - - 30 g
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Characteristic Curves Performance Curves – Efficiency 123456789 Total output current (A) Efficiency (%) Vin=36V Vin=48V Vin=75V 123456789 Total output current (A) Efficiency (%) Vin=36V Vin=48V Vin=75V Typical Efficiency ALQ07FY* Typical Efficiency ALQ07FM* 123456789 Total output current (A) Efficiency (%) Vin=36V Vin=48V Vin=75V Typical Efficiency ALQ07FK* Note: Both Io1 and Io2 increase by 10% until Io1+Io2=10A
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Output Performance Curves Typical Output Over-current ALQ07FY* Typical Output Over-current ALQ07FM* Typical Output Over-current ALQ07FK* Note: When Io1+Io2≥10A, the module will shut down
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Transient Response ALQ07FY 25%-50%-25%I o1,nom (Io1) ALQ07FY 50%-75%-50%I o1,nom (Io1) load change, I o2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) load change, Io2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) ALQ07FY 25%-50%-25%I o2,nom (Io2) ALQ07FY 50%-75%-50%I o2,nom (Io2) load change, Io1 =50%Io1,nom(ch1:Vo1,ch2:Vo2) load change, I o1 =50%Io1,nom(ch1:Vo1,ch2:Vo2)
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Transient Response (Cont.) ALQ07FM 25%-50%-25%Io1,nom (Io1) ALQ07FM 50%-75%-50%I o1,nom (Io1) load change, Io2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) load change, Io2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) ALQ07FM 25%-50%-25%Io2,nom (Io2) ALQ07FM 50%-75%-50%I o2,nom (Io2) load change, Io1 =50%Io1,nom(ch1:Vo1,ch2:Vo2) load change, I o1=50%Io1,nom(ch1:Vo1,ch2:Vo2)
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Transient Response (Cont.) ALQ07FK 25%-50%-25%Io1,nom (Io1) ALQ07FK 50%-75%-50%I o1,nom (Io1) load change, Io2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) load change, I o2 =50%Io2,nom(ch1:Vo1,ch2:Vo2) ALQ07FK 25%-50%-25%Io2,nom (Io2) ALQ07FK 50%-75%-50%I o2,nom (Io2) load change, Io1 =50%Io1,nom(ch1:Vo1,ch2:Vo2) load change, I o1 =50%Io1,nom(ch1:Vo1,ch2:Vo2)
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Startup Characteristics ALQ07FY Start-up from Power On ALQ07FM Start-up from Power On ALQ07FK Start-up from Power On
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Performance Curves – Startup from CNT Control ALQ07FY Start-up from CNT On ALQ07FM Start-up from CNT On ALQ07FK Start-up from CNT On
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Feature Description CNT Function Two CNT logic options are available. The CNT logic, CNT voltage and the module working state are as the following Table 1. L H OPEN N ON OFF OFF P OFF ON ON Table 1 N--- means “Negative Logic”, P--- means “Positive Logic” L--- means “Low Logic Voltage”, -0.7V≤L≤1.8V H--- means “High Logic Voltage”, 3.5V≤H≤12V ON--- means “Module is on”, OFF--- means “Module is off” Open--- means “CNT pin is left open “ Note: Normally, VCNT ≤12V, but when CNT is left open, VCNT may reach to 15V. The following Figure shows a few simple CNT circuits.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Trim The +Vo2 output voltage of the ALQ07 series can be trimmed using the trim pin provided. Applying a resistor Rtrim between the trim pin and either the COM or +Vo2 pin will cause the +Vo2 output to increase by up to 10% or decrease by down to 20%. Trimming up by more than 10% of the nominal output may activate the OVP circuit or damage the converter. Trimming down more than 20% can cause the converter to regulate improperly. If the trim pin is not needed, it should be left open. Trim up Trim down
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Minimum Load Requirements Parameter Device Symbol Typ Unit Minimum Load All Io1MIN Io2MIN A A Output Over-current Protection For ALQ07 series DC/DC converters, when any output occurs over-current, all outputs shut down after 100-300ms. The module can be restarted by resetting the input power or CNT control. Output Over-voltage Protection The over-voltage protection has a separate feedback loop, which is activated when the output voltage exceeds 120% to 150% of the nominal output voltage. The module can be restarted by resetting the input power or CNT control. Over Temperature Protection ALQ07 DC/DC converters will shut down when the temperature of the board reaches 101℃ to 115℃, and the module will automatically restart if the temperature of the board is under 100℃. Output Filters When the load is sensitive to ripple and noise, an output filter can be added to minimize the effects. A simple output filter to reduce output ripple and noise can be made by connecting a capacitor Cout across the output as shown in Figure ‘Output Ripple Filter’. The recommended value for the output tantalum capacitor C out is 220uF.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Extra care should be taken when long leads or traces are used to provide power to the load. Long lead lengths increase the chance for noise to appear on the lines. Under these conditions C1 can be added across the load, with a 0.1uF ceramic capacitor C1 in parallel generally as shown in Figure ‘Output Ripple Filter for a Distant Load’. Decoupling Noise on the power distribution system is not always created by the converter. High speed analog or digital loads with dynamic power demands can cause noise to cross the power inductor back onto the input lines. Noise can be reduced by decoupling the load. In most cases, connecting a 10uF tantalum or ceramic capacitor in parallel with a 0.1uF ceramic capacitor across the load will decouple it. The capacitors should be connected as close to the load as possible. Ground Loops Ground loops occur when different circuits are given multiple paths to common or earth ground, as shown in Figure ‘Ground Loops’. Multiple ground points can be slightly different potential and cause current flow through the circuit from one point to another. This can result in additional noise in all the circuits. To eliminate the problem, circuits should be designed with a single ground connection as shown in Figure ‘Single Point Ground’.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Design Consideration Typical Application Cin: Recommended input capacitor 47uF, aluminum electrolytic type Cout: Recommended output capacitor 220uF, Tantalum type, each capacitor ESR<100mΩ C1,C2: Recommended 0.1uF ceramic capacitor Note: Io1+Io2≤10A Fusing The ALQ07 power modules have no internal fuse. An external fuse must always be employed! To meet international safety requirements, a 250 Volt rated fuse should be used. If one of the input lines is connected to chassis ground, then the fuse must be placed in the other input line. Standard safety agency regulations require input fusing. Recommended fuse rating for the ALQ07 Series is 2A.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Input Reverse Voltage Protection Under installation and cabling conditions where reverse polarity across the input may occur, reverse polarity protection is recommended. Protection can easily be provided as shown in Figure ‘Reverse Polarity Protection Circuit’. In both cases the diode used is rated for 3A/100V. Placing the diode across the inputs rather than in-line with the input offers an advantage in that the diode only conducts in a reverse polarity condition, this increases circuit efficiency and thermal performance. Reverse Polarity Protection Circuit EMC Input filters are included in the converters to help achieve standard system emissions certifications. Some users however, may find that additional input filtering is necessary. The ALQ07 series has an internal switching frequency of 360kHz so a high frequency capacitor mounted close to the input terminals produces the best results. To reduce reflected noise, a capacitor can be added across the input as shown in Figure ‘Ripple Rejection Input Filter’, forming a filter. A 47uF/100V electrolytic capacitor is recommended for Cin. Ripple Rejection Input Filter For conditions where EMI is a concern, a different input filter can be used. The following figure ‘EMI Reduction Filter’ shows a filter designed to reduce EMI effects. ALQ07 series can meet EN55022 CLASS A with the following figure.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 The recommended values can refer to the following table: Component Value/Rating Type Description Price C1 None None None － C2 2.2uF/250Vac Metal film capacitor － － C3、C4、C8、 C9、C10、C11 4700pF/250Vac Safe ty Y capacitor － － C5、C6 0.022uF/275Vac Safety Y capacitor － － C7 1000pF/100V Ceramic － － C12、C13 0.1uF/50V Ceramic － － Cin 47uF/100V Aluminum Electrolytic Aluminum Electrolytic －100V－47uF±20％ －10*12.5－105℃ Cout 220uF/10V Tantalum Each capacitor ESR<100mΩ － L1 2.7mH Common mode Ferrite coreφ16 8/8， ferrite L2、L3 -- Ferrite Bead Ferrite, 1206 package, 3A/50Ω －
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Safety Consideration For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL1950, CSA C22.2 No. 950-95, and EN60950. The ALQ07 series input-to-output isolation is an basic insulation. The DC/DC power module should be installed in end-use equipment, in compliance with the requirements of the ultimate application, and is intended to be supplied by an isolated secondary circuit. When the supply to the DC/DC power module meets all the requirements for SELV(<60Vdc), the output is considered to remain within SELV limits (level 3). If connected to a 60Vdc power system, double or reinforced insulation must be provided in the power supply that isolates the input from any hazardous voltages, including the ac mains. One input pin and one output pin are to be grounded or both the input and output pins are to be kept floating. Single fault testing in the power supply must be performed in combination with the DC/DC power module to demonstrate that the output meets the requirement for SELV. The input pins of the module are not operator accessible. Note: Do not ground either of the input pins of the module, without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pin and ground.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Thermal Consideration When 48V input, 60℃ ambient temperature, and 150LF M airflow, ALQ07 series are rated for full power, and in this condition the case temperature can reach 90℃. For operation above ambient temperature of 60℃, output power must be derated as shown in Figure ‘Temperature Derating’, meantime, airflow at least 150LFM over the converter must be provided to make the module working properly. the case temperature should be used to determine maximum temperature limits. The minimum operating temperature for the ALQ07 is -40℃. Temperature Derating Curves MTBF The MTBF, calculated in accordance with Bellcore TR-NWT-000332 is 1,800,000 hours. Obtaining this MTBF in practice is entirely possible. If the ambient air temperature is expected to exceed +25℃, then we also advise an oriented for the best possible cooling in the air stream. ASTEC can supply replacements for converters from other manufacturers, or offer custom solutions. Please contact the factory for details.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Mechanical Considerations Installation Although ALQ07 series converters can be mounted in any orientation, free air-flowing must be taken. Normally power components are always put at the end of the airflow path or have the separate airflow paths. This can keep other system equipment cooler and increase component life spans. Soldering ALQ07 series converters are compatible with standard wave soldering techniques. When wave soldering, the converter pins should be preheated for 20-30 seconds at 110℃, and wave soldered at 260℃ for less than 10 seconds. When hand soldering, the iron temperature should be maintained at 425℃ 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.
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003 Mechanical Chart (pin side view) Note: Pin length is optional
ALQ07 DC-DC Converter Technical Reference Notes DATE: Aug., 9, 2003
Ordering Information
(V) Output Voltage (V) Output Current * (A) Ripple (mV ms) max. Noise (mV pp) max. Efficiency % typ. Vo1 3.3 6 50 50 ALQ07FY 36-75 Vo2 1.8 4 50 50 Vo1 3.3 6 50 50 ALQ07FM 36-75 Vo2 1.5 4 50 50 Vo1 3.3 6 50 50 ALQ07FK 36-75 Vo2 1.2 4 50 50 Note: Io1: 0A~6A, Io2: 0A~7A, Io1+Io2≤10A.