Product # PQ48020HMA30 Phone 1-888-567-9596 Doc.# 005-2HM420B Rev. C 4/9/03 Page 3
Half
Half
Brick
Brick
Technical Specification
48Vin 2.0Vout 30A
Parameter
Min. Typ. Max. Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating 100 V continuous
Operating 80 V continuous
Operating Transient Protection
100 V
<10
µs
Isolation Voltage (input to output) 2000 V Basic insulation level, Pollution degree 2
Operating Temperature -40 100
°C
Storage Temperature -55 125
°C
Voltage at ON/OFF input pin -2 18 V
Voltage at Clock Sync pin -15 18 V applies to Full Feature option only
INPUT CHARACTERISTICS
Operating Input Voltage Range 35 48 75 V
Input Under-Voltage Lockout
Turn-On Voltage Threshold 31.5 33.3 34.4 V
Turn-Off Voltage Threshold 29.5 31.0 32.4 V
Lockout Hysteresis Voltage 2.2 2.3 2.4 V
Input Over-Voltage Shutdown 76.7 78.3 79.5 V
Maximum Input Current 2.0 A 100% Load, 35 Vin
No-Load Input Current 75 95 mA
Disabled Input Current 2 5 mA
Inrush Current Transient Rating 0.03 A2s
Response to Input Transient TBD mV 1000V/ms input transient
Input Reflected-Ripple Current 3 mA RMS thru 10
µH inductor; Figs. 13 & 15
Recommended Input Fuse 20 A fast blow external fuse recommended
Input Filter Component Values (C1\L\C2) 1.6\4\3.3
µF\µH\µF internal values, see Figure E
Recommended External Input Capacitance 33 47
µF see Figure 13
OUTPUT CHARACTERISTICS
Output Voltage Set Point 1.98 2.00 2.02 V
Output Voltage Regulation
Over Line +0.05 \ 1 +0.1 \ 2 %\mV
Over Load +0.1 \ 2 +0.2 \ 4 %\mV
Over Temperature +15 +30 mV
Total Output Voltage Range 1.94 2.06 V over sample, line, load, temperature & life
Output Voltage Ripple and Noise 20MHz bandwidth; Fig. 13 & 16
Peak-to-Peak 50 100 mV Full Load, see Figures 13 & 16
RMS 10 20 mV Full Load, see Figures 13 & 16
Operating Output Current Range 0 30 A
Output DC Current-Limit Inception 33 36 39 A Output Voltage 10% Low; Fig. 17
Output DC Current-Limit Shutdown Voltage 1.1 V
Current Share Accuracy (2 units paralleled) +2+5 % % of rated output current
Back-Drive Current Limit while Enabled 0.5 1.4 3.0 A Max negative current drawn from output
Back-Drive Current Limit while Disabled 0 10 50 mA Max negative current drawn from output
Maximum Output Capacitance >50,000
µF
2.0Vout at 30A Resistive Load
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection 80 dB 120 Hz; Fig. 20
Output Voltage during Load Current Transient
Step Change in Output Current (0.1A/µs) 80 mV 50% to 75% to 50% Iout max; Figure 11
Step Change in Output Current (5A/µs) 80 mV 50% to 75% to 50% Iout max; Figure 12
Settling Time 300 µs to within 1% Vout nom
Turn-On Transient
Turn-On Time 20 30 ms Full load, Vout=90% nom.; Figs. 9 & 10
Start-Up Inhibit Time 180 200 215 ms
-40°C to +125°C; Figure A
Output Voltage Overshoot 0 % 10,000 µF load capacitance, Iout = 0A
EFFICIENCY
100% Load 88 % Figures 1 - 4
50% Load 89 % Figures 1 - 4
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature 125 °C Package rated to 150°C
Board Temperature 125 °C UL rated max operating temp 130°C
Transformer Temperature 125 °C See Figures 5 - 8 for derating curves
ISOLATION CHARACTERISTICS
Isolation Voltage 2000 V
Isolation Resistance 10 M
Ω
Isolation Capacitance 3300 pF
PQ48020HMA30 ELECTRICAL CHARACTERISTICS
T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C ambient
temperature with appropriate power derating.
Specifications subject to change without notice.