BQ50120QTA20 Datasheet, PDF (7/12 Pages) SynQor Worldwide Headquarters – Quarter-brick DC Bus Converter

Technical Specification
Input: 42-53 V
Output: 12 V
Current: 20 A
Package: Quarter-brick
Figure 13: Input Terminal Ripple Current, ic, at full rated output cur-
rent and nominal input voltage with 10µH source impedance and 47µF
electrolytic capacitor (100 mA/div). See Figure 12.
Figure 15: Output voltage ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 1µF ceramic capacitor
and 15µF tantalum capacitor. Bandwidth: 20 MHz. See Figure 12.
Figure 14: Input reflected ripple current, is, through a 10 µH source
inductor at nominal input voltage and rated load current (5 mA/div).
See Figure 12.
14
13
12
11
10
9
8
0
43V
48V
53V
5
10
15
20
25
Load Current (A)
Figure 16: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Figure 17: Load current (20A/div) as a function of time when the con-
verter attempts to turn on into a 1 mΩ short circuit. Top trace
(200µs/div) is an expansion of the on-time portion of the bottom trace.
Product # BQ50120QTA20
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www.synqor.com
Doc.# 005-2BQ512J Rev. E
03/17/06
Page 7