NQ40X40QGC30 Datasheet, PDF (5/9 Pages) SynQor Worldwide Headquarters – Quarter-brick DC-DC Converter

Technical Specification
100
95
90
85
80
75
70
65
60
0
36Vin 24Vout
24Vin 12Vout
36Vin 12Vout
24Vin 36Vout
12Vin 24Vout
12Vin 36Vout
5
10
15
20
25
30
Load Current (A)
Figure 1: Efficiency at different output voltage vs. load current for differ-
ent input voltage at 25 °C.
25
20
15
10
Tb=80 C; Vout=12 V
5
Tb=100 C; Vout=12 V
Tb=80 C; Vout=24 V
Tb=100 C; Vout=24 V
Tb=80 C; Vout=36 V
Tb=100 C; Vout=36 V
0
5
10
15
20
25
30
35
40
Input Voltage (V)
Figure 3: Maximum output power derating curve with a controlled base-
plate temperature of 80ºC and 100ºC.
Input: 9 - 40 V
Outputs: 0 - 40 V
Current: 30 A
Package: Quarter-brick
40
35
30
25
20
15
10
5
0
0
36Vin 24Vout
24Vin 12Vout
36Vin 12Vout
24Vin 36Vout
12Vin 24Vout
12Vin 36Vout
5
10
15
20
25
30
Load Current (A)
Figure 2: Power dissipation at different output voltage vs. load current
for different input voltage at 25 °C.
1 µH
source
impedance
See Fig. 5
See Fig. 6
i_S
i_{C Vin}
Dc-dc
V_out
Converter
V_SOURCE
C*
* See values for recommended external input capacitance.
Inductor optional as needed.
100 µF
100mW ESR
tantalum
capacitor
Figure 4: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 5), and Output Voltage Ripple (Figure 6).
36 Vout
24 Vout
12 Vout
36 Vout
24 Vout
12 Vout
Figure 5: Input Terminal Ripple Current with 24 V input and rated
load current (500 mA/div). Load capacitance: 100 µF electrolytic cap.
Bandwidth: 20 MHz. See Figure 4.
Figure 6: Output Voltage Ripple with 24 V input and rated load
current (50 mV/div). Load capacitance: 100 µF electrolytic cap.
Bandwidth: 20 MHz. See Figure 4.
Product # NQ40x40QGC30
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www.synqor.com
Doc.# 005-NQ4040W Rev. B 03/09/09
Page 5