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PI3545-00-LGIZ Datasheet, PDF (10/37 Pages) Vicor Corporation – 36 Vin to 60 Vin Cool-Power ZVS Buck Regulator & LED Driver
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PI354x-00
PI3542-00 (2.5 VOUT) Electrical Characteristics
Efficiency at 25°C
90
85
80
36 Vin
75
48 Vin
60 Vin
70
65
60
0 1 2 3 4 5 6 7 8 9 10
IOUT (A)
Figure 1 — Regulator Efficiency
Figure 4 — Output Ripple: 48 VIN, 2.5 VOUT at 10 A. VOUT = 20 mV/Div,
2.0 µs/Div; COUT = 6 x 100 µF Ceramic
Figure 2 — Transient Response: 5 A to 10 A, at 1 A/µs. 48 VIN to 2.5 VOUT,
COUT = 6 x 100 µF Ceramic
Switching Frequency vs. Load Current
450
425
400
375
350
325
300
275
250
0 1 2 3 4 5 6 7 8 9 10
IOUT (A)
36 Vin
48 Vin
60 Vin
Figure 5 — Switching Frequency vs. Load Current
Figure 3 — Output Short Circuit @ VIN = 48 V
Cool-Power®
Page 10 of 37
Rev 1.3
2/2016
Figure 6 — Output Ripple: 48 VIN, 2.5 VOUT at 5 A. VOUT = 20 mV/Div,
2.0 µs/Div; COUT = 6 x 100 µF Ceramic
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