NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /12 A Outputs
December 2, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Min
-1.5
-2.5
0.69
-
-
-
-
-
-
-
-
0
-
-
0
0
0
-
Typ
-
-
-
-
-
-
-
-
-
65
23
-
150
2
-
-
-
2
Max
+1.5
+2.5
5.5
0.5
10
5
0.4
10
0.5
80
28
12
-
-
100
1000
5000
-
Unit
%Vo,set
%Vo,set
V
V
mV
mV
%Vo,set
mV
%Vo,set
mV
mV
A
%Io,max
A
uF
uF
uF
mS
Hiccup Mode
Vo≤250mV, Hiccup Mode
Without the Tunable Loop
TM
With the Tunable Loop
TM
With the Tunable Loop
TM
Case 1: On/Off input is enabled and then input
power is applied (delay from instant at which
V
IN
= V
IN, min
until Vo =10% of Vo, set)
Case 2: Input power is applied for at least one
second and then the On/Off input is enabled
(delay from instant at which Von/Off is enabled
until Vo =10% of Vo, set)
time for Vo to rise from 10% of Vo, set to 90%
of Vo, set
Vin=Vin, min to Vin, max, Io=Io, min to Io, max,
With or without maximum external capacitance
mV
uS
mV
uS
di/dt=1A/us, Vin=Vin,nom, Ta=25°C, with a
1µF ceramic capacitor and a 10µF ceramic
capacitor.
I
O
=I
O, min
to I
O, max
Notes
with 0.5% tolerance for external resistor used to
set output voltage
Over all operating input voltage, resistive load,
and temperature conditions until end of life
selected by an external resistor
Output Specifications
Parameter
Output Voltage Set Point
Output Voltage
Adjustment Range
1
Remote Sense Range
Load Regulation
V
O
≥
2.5V
V
O
<
2.5V
Line Regulation
V
O
≥
2.5V
V
O
<
2.5V
Temperature Regulation
(-40°C to +85°C)
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Output Current Range
Output DC Current Limit
Output Short-Circuit Current
Output Capacitance
ESR≥ 1 mΩ
ESR≥0.15 mΩ
ESR≥ 10 mΩ
2
V
IN
=V
IN, min
to V
IN, max
V
O
< 2.5V, T
ref
=T
A, min
to T
A, max
5Hz to 20MHz BW, V
IN
=V
IN, nom
and I
O
=I
O, min
to
I
O, max
Co = 0.1μF // 10
μF
ceramic capacitors)
Turn-On Delay Time
-
2
-
mS
Output voltage Rise time
Output voltage overshoot
Dynamic Load Response
△
V50%~100%
-
-
5
-
-
3
mS
%Vo,set
Overshoot
Settling Time
Overshoot
Settling Time
-
-
-
-
360
50
400
50
-
-
-
-
of Max Load
△
V100%~50%
of Max Load
Notes:
1. Some output voltages may not be possible depending on the input voltage.
2. External capacitors may require using the new Tunable Loop
TM
feature to ensure that the module is
stable as well as getting the best transient response (See the Tunable Loop
TM
section for details).
3. Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
3
BEL [ BEL FUSE INC. ]
