DC-DC Converter
QHL300 Series
300 Watts
• 180 - 425VDC Input Range
xxx Series
• Regulated Single Output
• Industry Standard Half Brick
• 3kVAC Isolation
• Output Trim -20% to +10%
• Remote On/Off
• Overtemperature Protection
• -40°C to +100°C Operation
• 3 Year Warranty
Dimensions:
The QHL300 series offers a compact 300W DC-DC solution in an industry standard half brick
package. This series of modules enables effective construction of distributed power architectures
from AC front ends, PFC front ends and battery systems.
QHL300:
2.4 x 2.28 x 0.5” (61.0 x 57.9 x 12.7 mm)
Models & Ratings
Input Current(1)
Ripple & noise Efficiency at Vin Nominal
Maximum
Capacitive Load
Input Voltage
Output Voltage Output Current
Model Number
Full Load at Vin
Nominal
pk-pk
with full load
No Load
5V
60A
25A
1.12A
1.13A
1.11A
1.11A
1.11A
120mV
150mV
240mV
280mV
480mV
89%
88%
90%
90%
90%
10000µF
10000µF
6000µF
6000µF
3000µF
QHL300300S05
QHL300300S12
QHL300300S24
QHL300300S28
QHL300300S48
12V
24V
28V
48V
300V
(180-425V)
12.5A
10.7A
6.25A
10mA
Notes
1. Measured at 300VDC nominal input.
2. Peak to peak measured at 20MHz bandwidth and i) 47µF tantalum and 1µF ceramic capacitor across output for 5V model
ii) 10µF al. and 1µF ceramic capacitor across output for 48V model
iii) 10µF tantalum and 1µF ceramic capacitor across output for 12V, 24V and 28V models
3. Input capacitance of 150µF required. See application notes.
Mechanical Details
0.18
(4.6)
0.5
Mounting holes M3*0.5 - 4 places
(12.7)
Pin Connections
2 ø 0.08
(2.03)
Pin
1
2
3
4
5
6
7
8
Function
+Vin
Remote On/Off
-Vin
2.4
(61.0)
3
4
2.0
(50.8)
Bottom View
-Vout
-Sense
Trim
+Sense
+Vout
5
6
7
1.4
(35.5)
0.6
(15.2)
2
1
6 ø 0.04
(1.02)
8
Notes
1. All dimensions are in inches (mm)
2. Weight: 0.198 lbs (90 g) approx.
3. Tolerance: x.xx = 0.02 (x.x = 0.5)
x.xxx = 0.01 (x.xx = 0.25)
1.9 (48.3)
2.28 (57.9)
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