HEHB–70A–48V–1.2V
P/N 7A04I4WHXXX DS HEHB 70A 48V 1.2V 7A04 Rev.01-07-03.doc– page 3 –
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Magnetek PEG web site, www.magnetekpower.com
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(Typical values are at nominal input line, full load, airflow 300 LFM, 25°C ambient temperature unless otherwise specified)
Input Characteristics Notes & Conditions Min Typ Max Units
Operating Input Voltage Range Note 1 35 48 75 V
Input Surge Voltage T< 100msec 100 V
Input Under-Voltage Lockout
Turn-On Voltage Threshold 34.4 V
Turn-Off Voltage Threshold 33.1 V
Lockout Hysteresis Voltage TBA V
Maximum Input Current (IINmax)VIN=35V; Full Load at
nominal output voltage 2.9 A
No-load Input Current 60 70 mA
Off Converter Input Current 11 13 mA
Inrush Current Transient Rating 0.03 A2s
Input Reflected-Ripple Current RMS; see figures 6,7,8 TBA mA
Output Characteristics Notes & Conditions Min Typ Max Units
Output Voltage Set Point 50 % Load 1.188 1.2 1.212 V
Output Voltage Regulation
Over Load ± 5 ± 8 mV
Over Line ± 4 ± 6 mV
Over Temperature ± 5 ± 15 mV
Total Output Voltage Range
over sample, line,
load, temperature
and life
1.164 1.236 V
Output Voltage Ripple and Noise 20 MHz bandwidth
Peak to Peak 50 80 mV
RMS
Full load
see figures 6 & 9 10 20 mV
Operating Output Current Range 0 - 70 A
Output DC Current Limit Inception
(hiccup mode: 30msec ON, 220msec
OFF)
See Figure 5 77 84 A
Admissible Output Capacitance Full load, resistive 050,000 µF
Dynamic Characteristics Notes & Conditions Min Typ Max Units
Output Voltage during Load Current
Transient
15µF load cap. 5A/µs;
see figure 3,4
Step Change in IOUT (0.1A/µs) 50% to 75% Iout max 65 mV
Step Change in IOUT (1A/µs) 75% to 50% Iout max 130 mV
Settling Time to 1% of Vout nom 200 µs
Turn On Transient See figures 1, 2
Turn On Time Full load 160 200 ms
Output Voltage Overshoot 10,000 µF load
capacitance, Iout= 0A 0 %
Efficiency Notes & Conditions Min Typ Max Units
100% Load 84 %
75% Load 86 %
50% Load
Vin = 50V
88 %
NOTE 1 : Absolute max. continuous input voltage = 80V (operating) ; 100V (Surge).