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UCC2891EVM-520 Electrical Performance Specifications www.ti.com
3 UCC2891EVM-520 Electrical Performance Specifications
The UCC2891EVM-520 electrical performance specifications are listed in Table 1.
Table 1. UCC2891EVM-520 Performance Summary
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input Characteristics
Input voltage range 36 48 75 V
No load input current V
IN
= 36 V, I
OUT
= 0 A 75 100 mA
Maximum input current V
IN
= 36 V, I
OUT
= 30 A 3.00 3.25 A
Input voltage ripple V
IN
= 75 V, I
OUT
= 30 A 1.50 1.75 V
P-P
Input voltage ripple
Output voltage 36 V ≤ V
IN
≤ 75 V, 0 A ≤ I
OUT
≤ 30 A 3.25 3.30 3.35 V
Output voltage regulation Line regulation (36 V ≤ V
IN
≤ 75 V, I
OUT
= 0 A) ±0.30%
Load regulation (0 A ≤ I
OUT
≤ 30 A, V
IN
= 48 V) 0.050%
Output voltage ripple V
IN
= 48 V, I
OUT
= 30 A 30 40 mV
P-P
Output load current V
IN
= 48 V, I
OUT
= 30 A 0 30
A
Output current limit 36 V ≤ V
IN
≤ 72 V 32 <40
Output current limit
Switching frequency 275 325
kHz
Control loop bandwidth 36 V ≤ V
IN
≤ 75 V, I
OUT
= 10 A 5 8
Control loop bandwidth 36 V ≤ V
IN
≤ 75 V, 2 A ≤ I
OUT
≤ 30 A 30 50 °C
Peak efficiency 92%
Full load efficiency V
IN
= 48 V, I
OUT
= 30 A 90%
4
48-V to 3.3-V Forward Converter With Active-Clamp Reset Using the SLUU407A–June 2010–Revised May 2013
UCC2891 Active-Clamp Current-Mode PWM Controller
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