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Datasheet: 07QB-C5T03L (BEL Fuse)

ISOLATED DC/DC CONVERTERSThe 07QB-C5T Series are isolated DC/DC converters that operate fromA nominal 48V source. These units willprovide up to 150W of output power fromA nominal 48V input. These units are designed to be highly efficientand low cost. Typical efficiency of 12V output at 48V input at full load is 93%. Features include remote on/off,over current protection and under-voltage lockout. These converters are provided in an industry standardquarter brick package.

 

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BEL Fuse
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs

Isolated
Output
Over
Voltage
Shutdown
High
Efficiency
OCP/SCP
High Power Density
Over
Temperature
Protection
Low
Cost
Remote
On/Off
Input Under Voltage Lockout
Output
Voltage
Trim
Fixed Frequency (330KHz)
Positive/Negative
Remote
Sense
Active Low/High (Option)
Description
The 07QB-C5T Series are isolated DC/DC converters that operate from a nominal 48V source. These units will
provide up to 150W of output power from a nominal 48V input. These units are designed to be highly efficient
and low cost. Typical efficiency of 12V output at 48V input at full load is 93%. Features include remote on/off,
over current protection and under-voltage lockout. These converters are provided in an industry standard
quarter brick package.

Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active High
Model Number
Active Low
12V 48V 12A 144W 93%
07QB-C5T120
07QB-C5T12L
5.0V 48V 30A 150W 91%
07QB-C5T050
07QB-C5T05L
3.3V 48V 45A 150W 91%
07QB-C5T033
07QB-C5T03L
2.5V 48V
50A 125W
89%
07QB-C5T025
07QB-C5T02L
1.8V 48V
50A
120W 87%
07QB-C5TV80
07QB-C5TV8L
1.5V 48V
50A
75W 85%
07QB-C5TV50
07QB-C5TV5L
1.2V 48V
50A
60W 83%
07QB-C5TV20
07QB-C5TV2L
Note:
Add "G" suffix at the end of the model number to indicate Tray Packaging.


Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3V
-
80V
Remote On/Off
-0.3V
-
18V
I/O Isolation Voltage
-
-
2000V
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-55
C
-
125
C
Note:
All specifications are typical at nominal input, full load at 25
C unless noted.


07QB-C5T Series PRELIMINARY
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
36V
48V
75V
Input Current (full load)
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4.5A
4.9A
4.9A
4.1A
3.0A
2.6A
2.1A
Input Current (no load)
-
120mA
180mA
Remote Off Input Current
10mA
15mA
Input Reflected Ripple Current (pk-pk)
-
10mA
20mA
Input Reflected Ripple Current (RMS)
-
3mA
8mA
Tested with simulated source impedance
of 10uH, 5Hz to 20MHz; use a
100uF/100V electrolytic capacitor with
ESR = 1 ohm max. at 200KHz at 25
C.
I
2
t Inrush Current Transient
-
0.05A
2
s
0.1A
2
s
Turn-on Voltage Threshold
32V
34V
35V
Turn-off Voltage Threshold
30V
32V
34V
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
11.820V
4.925V
3.250V
2.463V
1.773V
1.477V
1.182V
12V
5V
3.3V
2.5V
1.8V
1.5V
1.2V
12.180V
5.075V
3.350V
2.538V
1.827V
1.523V
1.218V

Vin=48V, Io=50% full
load
Line Regulation
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=1.2V-2.5V
-
-
-
-
12mV
5mV
3mV
3mV
24mV
10mV
7mV
6mV
Load Regulation
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
-
-
30mV
10mV
7mV
6mV
5mV
4mV
3mV
60mV
20mV
15mV
13mV
9mV
8mV
6mV
Regulation Over Temperature (-40
C to +85C)
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
-
-
60mV
45mV
30mV
25mV
20mV
20mV
15mV
100mV
75mV
50mV
45mV
40mV
35mV
30mV
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs


Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Output Current
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=1.2V-2.5V
0A
0A
0A
0A
-
-
-
-
12A
30A
45A
50A
Current Limit Threshold
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=1.2V-2.5V
14A
36A
55A
58A
15.5A
43A
62A
63A
18A
50A
70A
70A
Short Circuit Surge Transient
-
3A
2
s 5A
2
s
Ripple and Noise (RMS)
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=1.2V-2.5V
-
-
-
-
30mV
25mV
20mV
15mV
50mV
50mV
40mV
30mV
Ripple and Noise (pk-pk)
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=1.2V-2.5V
-
-
-
-
100mV
100mV
55mV
40mV
150mV
150mV
100mV
80mV
Test conditions:
0-20MHz BW, with a
1uF ceramic capacitor
and a 10uF Tantalum
capacitor at the output.
Turn on Time
20mS
-
100mS
Overshoot at Turn on
-
0%
5%
Output Capacitance
V
O
=12.0V
V
O
=5.0V
V
O
=1.2V-3.3V
0uF
0uF
0uF
-
-
-
2200uF
10000uF
20000uF
Transient Response
Overshoot -
600mV
800mV
50% ~ 75%
Max Load
Settling Time
-
200uS
300uS
Overshoot -
600mV
800mV
75% ~ 50%
Max Load
Settling Time
V
O
=12.0V
- 200uS
300uS
Overshoot
-
150mV 300mV
50% ~ 75%
Max Load
Settling Time
-
200uS
300uS
Overshoot
-
150mV 300mV
75% ~ 50%
Max Load
Settling Time
V
O
=5.0V
-
200uS
300uS
Overshoot
-
100mV 200mV
50% ~ 75%
Max Load
Settling Time
-
200uS
300uS
Overshoot
-
100mV 200mV
75% ~ 50%
Max Load
Settling Time
V
O
=1.2V-3.3V
-
200uS
300uS
Test conditions: di/dt =
0.1A/uS, Vin=48V, with
a 1uF ceramic
capacitor and a 10uF
Tantalum capacitor at
the output.
Note:
All specifications are typical at nominal input, full load at 25
C unless noted.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs


General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V
O
=12V
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
90%
88%
88%
86%
84%
82%
80%
93%
91%
91%
89%
87%
85%
83%
-
-
-
-
-
-
-
Vin=48V, full load , Ta=25
C
Switching Frequency
280KHz
330KHz
380KHz
Isolation capacitance
-
1500pF
-
Output Voltage Trim Range
80%Vo
-
110%Vo
Over Temperature Protection
-
125
C
-
Over Voltage Protection
115%Vo
122%Vo
127%Vo
MTBF
TBD
Calculated Per Bell Core TR-332 (I
O
=
Nominal; T
a
= 25
C)
Dimensions
Inches
millimeters
2.30 x 1.45 x 0.395
58.42 x 36.83 x 10.03
Weight -
41g
-



Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit On)
-0.3V
-
0.8V
Signal High (Unit Off)
Active Low
2.4V - 18V
07QB-C5TxxL. The remote
on/off pin open, Unit off.
Signal Low (Unit Off)
-0.3V
-
0.8V
Signal High (Unit On)
Active High
2.4V - 18V
07QB-C5Txx0. The remote
on/off pin open, Unit on.
Current Sink
0mA
-
0.75mA






Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs


Output Trim Equations

Equations for calculating the trim resistor are shown below (Unit: k). The Trim Down resistor should be
connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim
pin and the Vout. Only one of the resistors should be used for any given application.
1) For Vo=1.5V - 12V:









Notes:





Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage
Vo=12.006V for 12V output; Vo=5V for 5.0V output;; Vo=3.308V for 3.3V output; Vo=2.505V for 2.5V output;
Vo=1.804V for 1.8V output; Vo=1.503V for 1.5V output




2) For Vo=1.2V:






Notes:





Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage
Vo=1.202V for 1.2V output
22
.
10
225
.
1
626
11
.
5
)
100
(
-
-
+
=
delta
Vo
delta
Rtrimup
22
.
10
511 -
=
delta
Rtrimdown
(
)
[ ]
%
100
_
-
=
Vo
Vo
req
Vo
delta
Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
22
.
10
6125
.
0
313
11
.
5
)
100
(
-
-
+
=
delta
Vo
delta
Rtrimup
22
.
10
511 -
=
delta
Rtrimdown
(
)
[ ]
%
100
_
-
=
Vo
Vo
req
Vo
delta
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