VRAF-06AT50 Datasheet, PDF (1/5 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
12 Vdc Input
0.9 Vdc / 6 A Output
VRAF-06AT50 RoHS Compliant PRELIMINARY Rev.A
• Non-Isolated
• High Efficiency
• Fixed Frequency
• Low Cost
• Tracking a Reference for
Output Voltage
• High Power Density
• Under-Voltage Lockout
• Output Enable
• OCP/SCP
• Current Source/Sink Capability
• Over Voltage Protection
(Hiccup Mode)
Description
The Bel VRAF-06AT50 module is a non-isolated, step down dc/dc power converter that operates from a nominal
12 Vdc source. The output is closely regulated and the efficiency is typically 73% at full load (Vin=12 Vdc).
Part Selection
Output
Voltage
0.9 V
Input
Voltage
12 V
Max. Output
Current
6A
Max. Output
Power
5.4 W
Typical
Efficiency
73%
Model Number
VRAF-06AT50
Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Min
Typ
Input Supply Voltage
-0.5 V
-
Input Signal Voltage
-0.3 V
Max
13.2 V
5.25 V
Operating Temperature
0 °C
-
65 °C
Storage Temperature
-40 °C
-
85 °C
Note: All specifications are typical at 25 °C unless otherwise stated.
Notes
Input Specifications
Parameter
Operating Input Voltage
Input Current (full load)
Input Current (no load)
Reference Voltage Range
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Min
10.8 V
-
-
1.6 V
-
-
Typ
12 V
-
-
1.8 V
3 mA
50 mA
Max
13.2 V
1A
50 mA
1.89 V
10 mA
80 mA
Input Reflected Ripple Current (rms)
-
10 mA
-
I²t Inrush Current Transient
-
0.006 A²s 0.012 A²s
Turn on Voltage Threshold
2.79 V
-
2.89 V
Turn off Voltage Threshold
2.59 V
-
2.69 V
Note: All specifications are typical at 25 °C unless otherwise stated.
Notes
With simulated source impedance
of 1000 nH, 5 Hz to 20 MHz. Use a
100 uF/25 V Tan cap with
ESR=0.025 ohm max, at 100
kHz@25°C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com