 |
 |
|
| PQ60033HPA70 |
|
|||||||||||||||||
 SYNQOR
|
| |||||||||||||||||
|
6 page 
Product # PQ60033HPA70 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2HP633K Rev. A 12/20/04 Page 6 Input: Input: Output: Output: Current: Current: P Package: ackage: 35-75 V 35-75 V 3.3 V 3.3 V 70 A 70 A Half-brick Half-brick T Technical S echnical Specification pecification 0 10 20 30 40 50 60 70 0 2540 5570 85 Ambient Air Temperature (oC) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Figure 7: Maximum output power derating curves vs. ambient air tem- perature for airflow rates of 50 LFM through 400 LFM with air flowing from output to input (nominal input voltage). Figure 8: Thermal plot of converter at 55 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from output to input (nominal input voltage). Figure 9: Turn-on transient at full load (resistive load) (10 ms/div). Input voltage pre-applied. Top Trace: Vout (1V/div). Bottom Trace: ON/OFF input (5V/div) Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout (1V/div). Bottom Trace: ON/OFF input (5V/div). Figure 11: Output voltage response to step-change in load current (50%-75%- 50% of Iout(max); dI/dt = 0.1A/µs). Load cap: 15µF, 450 m Ω ESR tantalum cap and 1µF ceramic cap. Top trace: Vout (100mV/div), Bottom trace: Iout (20A/div). Figure 12: Output voltage response to step-change in load current (50%-75%- 50% of Iout(max): dI/dt = 5A/µs). Load cap: 480µF, 15 m Ω ESR tantalum cap and 1µF ceramic cap. Top trace: Vout (200mV/div), Bottom trace: Iout (20A/div). |
