Product # PQ60018EKx25

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0005113 Rev. B

06/12/09

Page 9

Input:

Output:

Current:

Part No.:

35-75V

1.8V

25A

PQ60018EKx25

Technical Specification

0

1

2

3

4

5

6

7

8

9

10

11

12

40.0

39.5

39.0

38.5

38.0

37.5

37.0

36.6

36.0

35.5

35.0

Input Voltage (V)

100% Load

50% Load

0% Load

10 µH

source

impedance

DC/DC

Converter

See Fig. 15

See Fig. 14

See Fig. 16

1 µF

ceramic

capacitor

15 µF,

100mW ESR

tantalum

capacitor

47 µF,

<1W ESR

electrolytic

capacitor

PQ60018EKx Figures

Figure 13: Test set-up diagram showing measurement points for Input

Terminal Ripple Current (Figure 14), Input Reflected Ripple Current (Figure

15) and Output Voltage Ripple (Figure 16).

Figure 14: Input Terminal Ripple Current, ic, at full rated output current and

nominal input voltage with 10µH source impedance and 47µF electrolytic

capacitor (50mA/div). See Figure 13.

Figure 15: Input reflected ripple current, is, through a 10µH source inductor,

using a 47µF electrolytic input capacitor (5mA/div). See Figure 13.

Figure 16: Output voltage ripple at nominal input voltage and rated load

current (50mV/div). Load capacitance: 1µF ceramic capacitor and 15µF

tantalum capacitor. Bandwidth: 20MHz. See Figure 13.

Figure 17: Output voltage response to step-change in input voltage (48V

to 75V), at 25A load current. Load cap: 15µF tantalum capacitor and 1uF

ceramic cap. Ch 1: Vout (100mV/div), Ch 2: Vin (20V/div).

Figure 18: Achievable trim-up percentage vs. input voltage at 0%, 50% and

full load. Vin=35-40V.