VRAF-08XT50_10 Datasheet, PDF (2/8 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
12 Vdc Input
Vddq/2 / 8 A Output
Dec. 03, 2010
Input Specifications (continued)
Parameter
Min
Input Reflected Ripple Current (pk-pk)
-
Input Reflected Ripple Current (rms)
-
I²t Inrush Current Transient
-
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Typ
110 mA
25 mA
0.006 A²s
Max
180 mA
60 mA
0.012 A²s
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.
Turn on Voltage Threshold
Turn off Voltage Threshold
2.6 V
-
2.4 V
-
3.9 V
3.7 V
Notes: 1. All specifications are typical at 25 °C unless otherwise stated.
2. This power module is not internally fused. An input line fuse must always be used.
Output Specifications
Parameter
Output Voltage Set Point
Tracking Tolerance
(Vddq/2-Vout)/Vout
Load Regulation
Min
-
-1.5%
-
Typ
Vddq/2
-
3 mV
Max
-
1.5%
6 mV
Notes
Vin=12 V, lout=full load
Line Regulation
-
3 mV
6 mV
Output Current
0A
-
8A
Output DC Current Limit
9.2 A
-
14 A
Output Ripple and Noise (pk-pk)
Output Ripple and Noise (rms)
Short Circuit Surge Transient
-
25 mV
50 mV ^{Test conditions:}
0-20 MHz BW, with a 22 uF / 6.3 V
-
8 mV
15 mV _{ceramic capacitor at the output.}
-
1.1 A²s
2.2 A²s
Turn on Time
VRAF-08AT50
-
VRAF-08ET50
2.5 mS
5 mS
5 mS
8 mS
Start up from ENABLE.
Overshoot at Turn on
-
0%
3%
Output Capacitance
0 uF
-
2200 uF
Transient Response
50% ~ 100% Max Load
-
Settling Time
-
VO =0.9 V
100% ~ 50% Max Load
-
Settling Time
-
100 mV
20 uS
100 mV
20 uS
200 mV
50 uS
200 mV
50 uS
di/dt=0.3 A/uS; Vin12 V; and
with a 22 uF / 6.3 V ceramic
capacitor at the output.
Note: All specifications are typical at Vin =12 V, Vddq=1.8 V, Io=8 A, Ta= 25°C unless otherwise stated.
General Specifications
Parameter
Efficiency
Switching Frequency
Min
68%
260 kHz
Typ
69%
300 kHz
Max
-
340 kHz
MTBF
6,416,286 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
0.65 x 0.41 x 0.40
16.51 x 10.41 x 10.16
Weight
-
2.5 g
-
Note: All specifications are typical at 25 °C unless otherwise stated.
Notes
Vin=12 V, Vddq=1.8 V, Io=8 A
Calculated Per Bell Core SR-332 (IO =
80% load; Vin=12 V; Ta = 25 °C)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com