Product # PQ40120QGx08

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2QG128D Rev. C

11/13/12

Page 9

Input:

Output:

Current:

Package:

18-75V

12V

8.33A

Quarter-brick

8

9

10

11

12

13

0

1

2

3

4

5

6

7

8

9

10

11

Load Current (A)

18 Vin

48 Vin

75 Vin

0.001

0.01

0.1

1

10

10

100

1,000

10,000

100,000

Hz

18 Vin

48 Vin

75 Vin

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10

100

1,000

10,000

100,000

Hz

18 Vin

48 Vin

75 Vin

Figure 19: Input reflected ripple current, is, through a 10 µH source inductor at

nominal input voltage and rated load current (10 mA/div). See Figure 17.

Figure 20:Output voltage ripple at nominal input voltage and rated load current

(20 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF tantalum

capacitor. Bandwidth: 20 MHz. See Figure 17.

Figure 21: Output voltage vs. load current showing typical current limit curves

and converter shutdown points.

Figure 22: Load current (5A/div) as a function of time when the converter

attempts to turn on into a 10 mW short circuit. Top trace (40ms/div) is an

expansion of the on-time portion of the bottom trace.

Figure 23: Magnitude of incremental output impedance (Zout = vout/iout) for

minimum, nominal, and maximum input voltage at full rated power.

Technical Figures

Figure 24: Magnitude of incremental forward transmission (FT = vout/vin) for

minimum, nominal, and maximum input voltage at full rated power.