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BUS CONVERTER
EUS15-120 Model
Features:
48 Vin, Isolated, 4:1 Fixed Conversion Ratio 220 Watt Nominal Output (at 48 Vin, 55 C, 200 LFM) 170 Watt Output (at 38 Vin, 55 C, 200 LFM) Industry Standard 1/8 Brick Footprint Remote Enable (Primary Side, Positive or Negative) Over-temperature and Over Current Protection Direct Parallel Operation for Higher Power Applications RoHS Compliant
Table 1
Input Characteristics Input Voltage Operating Range Input Voltage Absolute Maximum Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold Hysteresis Voltage Turn-on Threshold Turn-off Threshold Hysteresis Voltage Steady-State (23 A out) Enabled state, on load (48 Vin) Disabled state (48 Vin) Notes & Conditions (1) Min 36 36 34 2 56 55 2 5.5 80 6 50 0.2 On State range Off State range On State range Off State range -0.1 2.4 2.4 -0.1 0.8 5.0 5.0 0.8 58 57 Typ. 48 Max 55 60 37.5 35.5 Units Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Adc mA mA mA p-p 2 As Vdc Vdc Vdc Vdc
Input Overvoltage Lockout Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected Ripple Current Inrush Current Transient Enable - Negative Logic Version Internal 10 K pull-up to 5 V. Enable - Positive Logic Version Internal 100 K pull-down to GND.
Table 2
Output Characteristics Output Voltage Set Point (Vo=Vin/4 +0/-0.5%) Output Load Regulation Output Voltage Total Regulation Output Ripple Voltage & Noise Output Current Operating Range Efficiency Turn-On Time Start-up Inhibit Time Transient Response (3) Maximum Output Capacitance (4) Notes & Conditions (1) Vin = 48.0 V, Io = 0 A Io = 0 to 15 A Vin = 36 to 55 V, Io = 0 to 15 A, Vin = 42 to 53 V, Io = 0 to 15 A, 20 MHz Bandwidth Vin = 48 V, Io = 15 A Vin present: Enable to 90% Vout Enabled: Vin applied to 90% Vout 25% step, 0.1A/s, Vo Recovery Time Min 11.94 8.3 9.7 90 0 96 10 80 160 100 3000 Typ. 11.98 0.7 Max 12.0 13.75 13.25 150 15 Units Vdc V Vdc Vdc mV p-p A % mS mS mV s F
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1
BUS CONVERTER
EUS15-120 Model
Table 1
Protection Characteristics Output Over-Current Shutdown Short Circuit Current Over Temperature Shutdown (5) Over Temperature Restart Hysteresis Notes & Conditions (1) Non-Latching Re-start rate Peak Non-Latching Min 21 Typ. 23 TBD TBD 125 10 Max 25 Units A msec Ap C C
130
Table 2
General Specifications Isolation Voltage Isolation Resistance Storage Temperature Range Operating Temperature Range Thermal Measurement Location Temperature (7) Material Flammability MTBF Notes & Conditions (1) Input to Output Input to Output Non-condensing Ambient (7) See mechanical drawing for location UL 94V-0 Calculated (Bellcore TR-332) Demonstrated 2.28"L x 0.9"W x 0.48"H (max) (57.9L x 22.9W x 12.19H mm max) Min 2250 10 -40 -40 Typ. Max Units Vdc Mohm C C C x10 Hrs 6 x10 Hrs
6
125 100 120 TBD TBD
1
Dimension Weight
grams
Table 3
Standards Compliance UL/CSA 60950 EN60950 Notes & Conditions (6) Basic Insulation Certified by TUV
Notes:
(1) (2) (3) (4) (5) (6) (7) Vin = 48Vdc, Ta = 25 C, Airflow = 200 LFM for all data unless otherwise noted. Output ripple voltage and noise is specified when measured with no external capacitance. Transient response is specified without a capacitor at the output of the converter. Product operates with an external capacitance greater than specified. For higher values please contact a Celestica representative. Thermal shutdown is monitored at the Thermal Measurement Location (TML). See `Mechanical Information' on page 3 for TML location. See `Safety Considerations' shown on last page. De-rating curves are conducted in a controlled environment. End application testing is required to ensure the Thermal Measurement Location temperature is below the maximum specified. (8) Recommended airflow direction is from pin 1 to pin 3, or 3 to 1 (transverse airflow).
2
BUS CONVERTER
EUS15-120 Model
Mechanical Information
Figure 1
Pin Assignment
Table 4
Pin # 1 2 3 4 5 Pin Name Vi(+) En Vi(-) Vo(-) Vo(+) Function Positive Input Voltage Input Enable / Disable Negative Input Voltage Negative Output Voltage Positive Output Voltage Referenced to Vi(-). Positive Logic: Floating = Enabled Negative Logic: Floating = Disabled Notes & Conditions
3
BUS CONVERTER
EUS15-120 Model
Efficiency Curves
Efficiency (%) vs. Iout (A) and Vin (V)
97% 96% 95% 94% 93% 92% 91% 90% 89% 88% 0 2 4 6 8 10 12 14 16 18 20
55Vin 48Vin 42Vin 38Vin
Figure 2
Output Voltage vs. Current
Vo (V) vs. Io (A) and Vin (V)
14 13 12 11 10 9 8 7 6 0 2 55 Vin 48 Vin 42 Vin 38 Vin 4 6 8 10 12 14 16 18 20
Figure 3
4
BUS CONVERTER
EUS15-120 Model
Thermal Derating Curves (Transverse) TTML=120C
Iout (A) vs. Tamb (C) and Air Flow (LFM) 38 Vin 24 22 20 18 16 14 12 10 8 6 4 2 0 25
24 22 20 18 16 14 12 10 8 6 4 2 0
Airflow from pin 3 to pin 1
Iout (A) vs. Tam b (C) and Air Flow (LFM) 42 Vin
100 LFM 200 LFM 300 LFM 400 LFM 35 45 55 65 75 85
100 LFM 200 LFM 300 LFM 400 LFM 25 35 45 55 65 75 85
Figure 4
Iout (A) vs. Tam b (C) and Air Flow (LFM) 48 Vin 24 22 20 18 16 14 12 10 8 6 4 2 0 25
24 22 20 18 16 14 12 10 8 6 4 2 0
Figure 5
Iout (A) vs. Tam b (C) and Air Flow (LFM) 55 Vin
100 LFM 200 LFM 300 LFM 400 LFM 35 45 55 65 75 85
100 LFM 200 LFM 300 LFM 400 LFM 25 35 45 55 65 75 85
Figure 6
Figure 7
5
BUS CONVERTER
EUS15-120 Model
Pout (W) vs. Tamb (C) and Vin (V) 200 LFM 275 250 225 200 175 150 125 100 75 50 25 0 25
38 Vin 42 Vin 48 Vin 55 Vin 35 45 55 65 75 85
Figure 8
6
BUS CONVERTER
EUS15-120 Model
Turn-on from Vin (Enable On)
Turn-on from Enable (Vin present)
Figure 9
Ch3: En; Ch2: Vout
Vin=48V, Io=15A, Co=3000uF
Figure 10
Ch3: Vin; Ch2: Vout
Vin=48V, Io=15A, Co=3000uF
Output Ripple/Noise
Figure 11
Vin=48V, Io=15A
Vripple = 114 mVpp
7
BUS CONVERTER
EUS15-120 Model
Safety Considerations
The EUS series of converters are certified to the standards listed in the `Standards Compliance' section in the table above. If this product is built into information technology equipment, the installation must comply with the above standard. An external input fuse (10 A recommended), must be used to meet the above requirements. The output of the converter [Vo(+)/Vo(-)] is considered to remain within SELV limits when the input to the converter meets SELV or TNV-2 requirements. The converters and materials meet UL 94V-0 flammability ratings.
Figure 12
Ordering Information

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