AVO250-48S28PB-6L ARTESYN | Alldatasheet
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Rev.09.30.14_#1.0 AVO250-48S28B Page 1 Technical Reference Note AVO250-48S28B
250 Watts
Total Power: 250 Watts Input Voltage: 36 to 75 Vdc # of Outputs: Single Special Features
- Delivering up to 9A output current
- Ultra-high efficiency 93% typ. at full load
- Wide input range: 36V ~ 75V
- Excellent thermal performance
- No minimum load requirement
- Basic isolation
- High power density
- Low output noise
- Reflow soldering-able
- RoHS 6 compliant
- Remote control function
- Remote output sense
- Trim function: 64% ~ 116%
- Input under voltage lockout
- Output over current protection
- Output short circuit protection
- Output over voltage protection
- Over temperature protection
- Industry standard eighth-brick pin- out outline
- Baseplate Safety IEC/EN/UL/CSA 60950 CE Mark UL/TUV EN55022 Class A Product Descriptions The AVO250-48S28B is a single output DC/DC converter with standard eighth- brick form factor and pin configuration. It delivers up to 9A output current with 28V output. Ultra-high 93% efficiency and excellent thermal performance makes it an ideal choice for using in telecommunication and datacom applications and can operate under an ambient temperature range of -40 OC ~ +85 OC, with full power available when the baseplate of the unit is kept below 100 OC.
Applications
This family of units has been specifically designed to support the rigors of the supply of power to RF Power Amplifiers in small-cell, low power applications in Telecommunication applications. The small form-factor, baseplate construction are exceptionally well suited for such applications where small space and contact-cooling are essential attributes required of the DCDC converter. Add this to the wide output trim range of 18V to 32V means that this unit is extremely versatile in the applications that it can address. Typically, this unit is used along side a member of the AVD (1/16 th brick) family of DCDC converters to provide the lower voltage required to supply power to digital circuitry present in such RF Power-Amplifier applications.
Rev.09.30.14_#1.0 AVO250-48S28B Page 2 Technical Reference Note Artesyn Embedded Technologies Model Numbers
Ordering information
AVO250 - 48 S 28 P B - 6 L ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ① Model series AVO: series name , 250:output power 250 W ② Input voltage 48: 36V ~ 75V input range, rated input voltage 48V ③ Output number S: single output ④ Rated output voltage 28: 28V output ⑤ Remote ON/OFF logic Default: negative logic; P: posit ive logic ⑥ Baseplate B: with baseplate; default: open frame ⑦ Pin length S: SMT; 6: 3.8mm ± 0.25mm ⑧ RoHS status Y: Rohs, R5; L: RoHS, R6 Standard Output Voltage Structure Remote ON/OFF logic R oHS Status AVO250-48S28PB-6L 28Vdc Baseplate Positive R6 AVO250-48S28B-6L 28Vdc Baseplate Negative R6
Table 1. Absolute Maximum Ratings: Note 1 - 1mA for 60s, slew rate of 1500V/10s. Note 2 - See thermal derating of output power in Table 6. Stress in excess of those listed in the “Absolute Maximum Ratings” may cause permanent damage to the power supply. periods may adversely affect the power supply’s reliability.
Table 2. Input Specifications:
1 Symbol Min Typ Max Unit
Note 1 - Ta = 25 OC, airflow rate = 400 LFM, Vin = 48Vdc, nominal Vout unless otherwise noted.
Table 3. Output Specifications: Note 1 - Ta = 25 OC, airflow rate = 400 LFM, Vin = 48Vdc, nominal Vout unless otherwise noted. Note 2 - Hiccup: auto-restart when over-current condition is removed. Note 3 - High frequency and low ESR is recommended.
Table 3. Output Specifications, con’t:
4 All %V O 120 - 135 %
Note 4 - Hiccup: auto-restart when over-voltage condition is removed.
Rev.09.30.14_#1.0 AVO250-48S28B Page 9 Technical Reference Note Artesyn Embedded Technologies Mechanical Specifications Mechanical Outlines
Rev.09.30.14_#1.0 AVO250-48S28B Page 10 Technical Reference Note Artesyn Embedded Technologies Pin length option Pin Designations Device code suffix L -4 4.8mm ±0.25 mm -6 3.8mm ±0.25 mm -8 2.8mm ±0.25 mm None 5.8mm ±0.25 mm Pin No. Name Function
1 V in + Positive input terminal
2 Remote ON/OFF ON/OFF control terminal
in - Negative input terminal
4 V o- Negative output terminal
5 S- Negative remote sense
6 Trim Output voltage trim
7 S+ Positive remote sense
o+ Positive output terminal
Table 4. Environmental Specifications: techniques, Electrical Fast Transient. DC input port. techniques, Voltage Dips and short interruptions and voltage variations. Criterion A: Normal performance during and after test. ceases after the disturbances ceases, and from which the EUT recovers its normal performance automatically. automatically after the disturbance ceases. Criterion C: Temporary loss of output, the correction of which requires operator intervention. Criterion D: Loss of output which is not recoverable, owing to damage to hardware.
Rev.09.30.14_#1.0 AVO250-48S28B Page 12 Technical Reference Note Artesyn Embedded Technologies Environmental Specification EMC Test Conditions Figure 10 EMC test configuration U1: Input EMC filter U2: Module to test, AVO250-48S28B C1 ~ C4: See Figure 19 C1 C2 Vin+ Vin- DC/DC C3 C4 Vo+ Vo- EMI filter Out+ Out- In+ In- PE 1uF 0.022uF 0.1uF 1320uH Resistive load 0.022uF
within other equipment and must not be operated as a stand alone product. Table 5. Safety Certifications for AVO200-48S28-6L power supply system:
Table 8. Qualification Testing:
Rev.09.30.14_#1.0 AVO250-48S28B Page 18 Technical Reference Note Artesyn Embedded Technologies Application Notes Typical Application Below is the typical application of the AVO250-48S28B power supply. Figure 15 Typical application C1 C7: SMD ceramic-100V-1000nF-X7R-1210. C2: SMD ceramic-100V-100nF-±10%-X7R-1206. C3: 220 μF/100V electrolytic capacitor; P/N: UPM1A221MED or equivalent caps. C6: 680 μF/50V electrolytic capacitor; P/N: UPM1A221MED+ UPM1A471MHD or equivalent caps. C4 C5: SMD ceramic-0.1U/1000V/X7R- 2220. Fuse: External fast blow fuse with a rating of 15A. The recommended fuse model is 0314015.P from LITTLEFUSE.
Rev.09.30.14_#1.0 AVO250-48S28B Page 19 Technical Reference Note Artesyn Embedded Technologies Remote ON/OFF Either positive or negative remote ON/OFF logic is available in AVO250-48S28B. The logic is CMOS and TTL compatible. The voltage between pin Remote ON/OFF and pin Vin- must not exceed the range listed in table 1 to ensure proper operation. The external Remote ON/OFF circuit is highly recommended as shown in figure 16. Isolated remote ON/OFF circuit Non-isolated remote ON/ OFF circuit Figure 16 External Remote ON/OFF circuit Vin+ Remote ON/OFF Vin- Vo+ Trim Vo- Vin+ Remote ON/OFF Vin- Vo+ Trim Vo-
Rev.09.30.14_#1.0 AVO250-48S28B Page 20 Technical Reference Note Artesyn Embedded Technologies Trim Characteristics Connecting an external resistor between Trim pin and Vo- pin will decrease the output voltage. While connecting it between Trim and Vo+ will increase the output voltage. The following equations determine the external resistance to obtain the trimmed output voltage. △:Output e rate against nominal output voltage. V nom : Nominal output voltage. For example, to get 32.5V output, the trimming resistor is For 1% adjustment resistor, the trimed output voltage is guaranteed within ±2%. When trimming up, the output current should be decreased accordingly so as not to exceed the maximum output power. Figure 17 Trim up Figure 18 Trim down For AVO250-48S28B, if the sense compensate function is not necessary, connect S+ to Vo+ and S- to Vo- directly. Ω−∆= kR down adj ) 2% %100 (_ ∆+= kVR o up adj )% %2%100 %225 .1 %) %100 ((_ nom onom V VV )(100 −×=∆ 07 . 16 28 nom onom V VV %07 . 16 2%100 07 .16 225 .1 +=− KR up adj Load Cout Vo+ Trim Vo- Rtrim _up Load Cout Vo+ Trim Vo- Rtrim _down
Rev.09.30.14_#1.0 AVO250-48S28B Page 21 Technical Reference Note Artesyn Embedded Technologies Input Ripple & Output Ripple & Noise Test Configuration Figure 19 Input ripple & inrush current, output ripple & noise test configuration Vdc: DC power supply L1: 12uH Cin: 220 μF/100V typical C1: 220 μF/100V electrolytic capacitor, High frequency and low ESR C2 C3: SMDceramic-100V-1000nF-X7R-1210 C4: 1000 μF/50V electrolytic capacitor, High frequency and low ESR Note: It is recommended to use a coaxial cable with series 50 Ω resistor and 0.68 μF ceramic capacitor or a ground ring of probe to test output ripple & noise. Vdc C1 C2 Vin+ Vin- DC/DC C3 C4 Load Vo+ Vo- Cin Probe 50mm Current probe
Rev.09.30.14_#1.0 AVO250-48S28B Page 22 Technical Reference Note Artesyn Embedded Technologies Soldering The product AVO250-48S28B and AVO250-48S28PB-6L are intended for standard manual, reflow or wave soldering. When reflow soldering is used, the temperature on pins is specified to maximum 260 OC for maximum 10s. When wave soldering is used, the temperature on pins is specified to maximum 260 OC for maximum 7s. When manual soldering is used, the iron temperature should be maintained at 300 OC ~ 380 OC and applied to the converter pins for less than 10s. Longer exposure can cause internal damage to the converter. Cleaning of solder joint can be performed with cleaning solvent IPA or similative.
Rev.09.30.14_#1.0 AVO250-48S28B Page 23 Technical Reference Note For more information: www.artesyn.com/power For support: productsupport.ep@artesyn.com Hazardous Substances Announcement (RoHS of China) Parts Hazardous Substances Pb Hg Cd Cr 6+ PBB PBDE AVO250-48S28B-6 x x x x x x AVO250-48S28PB-6L x x x x x x х: Means the content of the hazardous substances in all the average quality materials of the part is within the limits specified in SJ/T-11363-2006 √: Means the content of the hazardous substances in at least one of the average quality materials of the part is outside the limits specified in SJ/T11363-2006 Artesyn Embedded Technologies has been committed to the design and manufacturing of environment-friendly products. It will reduce and eventually eliminate the hazardous substances in the products through unremitting efforts in research. However, limited by the current technical level, the following parts still contain hazardous substances due to the lack of reliable substitute or mature solution: 1. Solders (including high-temperature solder in parts) contain plumbum. 2. Glass of electric parts contains plumbum. 3. Copper alloy of pins contains plumbum