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Datasheet: 07CY-85T033 (BEL Fuse)

ISOLATED DC/DC CONVERTERSThe 07CY-60T Series are isolated DC/DC converters that operate fromA nominal 48V source. These unitsprovide up to 60W of output power fromA nominal 48V input. These units are designed to be highly efficientand low cost. Features include remote on/off, short circuit protection, over current protection, over temperatureprotection, input under voltage lockout, and output over voltage protection. These converters are provided in anindustry standard eighth 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 3.3V/15A, 5V/12A, 12V/5A Output, 1/8 Brick

Isolated
Output
Over
Voltage
Shutdown
High
Efficiency
OCP/SCP
High Power Density
Over
Temperature
Protection
Fix Frequency (300KHz)
Remote On/Off Logic (Option)
Low
Cost
Output
Voltage
Trim
Input Under Voltage Lockout
Positive/Negative Remote Sense
Description
The 07CY-60T Series are isolated DC/DC converters that operate from a nominal 48V source. These units
provide up to 60W of output power from a nominal 48V input. These units are designed to be highly efficient
and low cost. Features include remote on/off, short circuit protection, over current protection, over temperature
protection, input under voltage lockout, and output over voltage protection. These converters are provided in an
industry standard eighth brick package.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active High
Model Number
Active Low
12.0V
36V 75V
5A
60.0W
91%
07CY-60T120
07CY-60T12L
5.0V
36V 75V
12A
60.0W
91%
07CY-60T050
07CY-60T05L
3.3V
36V 75V
15A
50.0W
89%
07CY-60T033
07CY-60T03L
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
-2V
-
18V
I/O Isolation Voltage
-
-
2000V
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-55
C
-
125
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
36V
48V
75V
Input Current (full load)
Vo=12.0V
Vo=5.0V
Vo=3.3V
-
-
-
-
-
-
3.0A
2.8A
2.6A
Input Current (no load)
Vo=12.0V
Vo=5.0V
Vo=3.3V
-
-
-
120mA
80mA
40mA
240mA
160mA
80mA
Remote Off Input Current
2mA
5mA
07CY-60T Series
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 3.3V/15A, 5V/12A, 12V/5A Output, 1/8 Brick

Input Specifications (Continued)
Parameter
Min
Typ
Max
Notes
Input Reflected Ripple Current
1
(pk-pk)
-
12mA
24mA
Input Reflected Ripple Current
1
(RMS)
-
2mA
4mA
I
2
t Inrush Current Transient
-
0.01A
2
s 0.02A
2
s
Turn-on Voltage Threshold
32V
34V
35V
Turn-off Voltage Threshold
30V
32V
33V
Note:
1. Test conditions: with simulated source impedance of 10uH; use a 100uF/100V electrolytic capacitor
with ESR = 1 ohm max. at 5Hz to 20MHz at 25
C
.


Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
V
O
=12.0V
V
O
=5.0V
Vo=3.3V
11.820V
4.925V
3.250V
12.0V
5.0V
3.3V
12.180V
5.075V
3.350V

Vin=48V, Io=50% full
load, Ta=25
C.
Line Regulation
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
-
-
-
12mV
5mV
3mV
24mV
10mV
7mV
Load Regulation
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
-
-
-
30mV
10mV
7mV
60mV
20mV
15mV
Regulation Over Temperature
(-40
C to +85C)
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V

-
-
-

60mV
45mV
30mV

100mV
75mV
50mV
Output Current
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
0A
0A
0A
-
-
-
5A
12A
15A
Current Limit Threshold
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
5.5A
13.5A
16A
6.5A
16A
18A
8A
19A
20A
Short Circuit Surge Transient
-
3A
2
s 5A
2
s
Ripple and Noise (RMS)
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
-
-
-
25mV
25mV
15mV
50mV
50mV
30mV
Ripple and Noise (pk-pk)
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
-
-
-
100mV
110mV
55mV
130mV
150mV
100mV
Test conditions:
Vin=48V, Ta=25
C,
with a 1uF ceramic
capacitor and a 10uF
Tantalum capacitor at
the output.
Turn on Time
-
10mS
25mS
Overshoot at Turn on
-
0%
5%
Output Capacitance
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
0uF
0uF
0uF
-
-
-
1000uF
10000uF
18000uF
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 3.3V/15A, 5V/12A, 12V/5A Output, 1/8 Brick
Output Specifications (Continued)
Parameter
Min
Typ
Max
Notes
Transient Response
Overshoot -
300mV
400mV
25% ~ 50%
Max Load
Settling Time
-
400uS
500uS
Overshoot -
300mV
400mV
50% ~ 25%
Max Load
Settling Time
V
O
=12.0V
- 400uS
500uS
Overshoot
-
200mV 300mV
25% ~ 50%
Max Load
Settling Time
-
300uS
400uS
Overshoot
-
200mV 300mV
50% ~ 25%
Max Load
Settling Time
V
O
=5.0V
-
300uS
400uS
Overshoot
-
150mV 200mV
25% ~ 50%
Max Load
Settling Time
-
150uS
200uS
Overshoot
-
150mV 200mV
50% ~ 25%
Max Load
Settling Time
V
O
=3.3V
-
150uS
200uS
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 25
C unless otherwise stated.

General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V
O
=12.0V
V
O
=5.0V
V
O
=3.3V
88%
88%
87%
91%
91%
89%
-
-
-
Vin=48V, full load
Switching Frequency
270KHz
300KHz
330KHz
Isolation capacitance
-
1500pF
-
Output Voltage Trim Range
80%Vo
-
110%Vo
Over Temperature Protection
-
125
C
-
Over Voltage Protection
117%Vo
122%Vo
127%Vo
MTBF
2,410,000 hours
Calculated Per Bell Core TR-332 (I
O
=
12A, Vin=48V, Vo=3.3V, T
a
= 25
C, No
forced air)
Dimensions
Inches (L W H)
Millimeters (L W H)
2.30 x 0.896 x 0.395
58.42 x 22.86 x 10.04
Weight -
20g
-
Note
: All specifications are typical at 25
C
unless otherwise stated.

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
Signal Low (Unit Off)
-0.3V
-
0.8V
Signal High (Unit On)
Active High
2.4V - 18V
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 3.3V/15A, 5V/12A, 12V/5A Output, 1/8 Brick


Output Trim Equations

Equations for calculating the trim resistor (in k) are shown below. 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.


















Notes:




Vo_req=Desired (trimmed) output voltage [V]


Output voltage Vo=3.308V for 3.3V output; Vo=5.002V for 5.0V; Vo=12.007V for 12V output














22
.
10
511 -
=
delta
Rtrimdown
(
)
[ ]
%
100
_
-
=
Vo
Vo
req
Vo
delta
Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
22
.
10
225
.
1
626
11
.
5
)
100
(
-
-
+
=
delta
Vo
delta
Rtrimup
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 3.3V/15A, 5V/12A, 12V/5A Output, 1/8 Brick

Efficiency Data
07CY-60T03x EFFICIENCY
60%
65%
70%
75%
80%
85%
90%
95%
1.5A
3.75A
7.5A
11.25A
15A
OUTPUT CURRENT (A)
E
FFI
C
I
E
N
C
Y
36V
48V
75V

07CY-60T05x EFFICIENCY
60%
65%
70%
75%
80%
85%
90%
95%
1.2A
3.0A
6.0A
9.0A
12.0A
OUTPUT CURRENT (A)
EFF
I
C
I
EN
C
Y
36V
48V
75V
07CY-60T12x EFFICIENCY
60%
65%
70%
75%
80%
85%
90%
95%
0.5A
1.25A
2.5A
3.75A
5.0A
OUTPUT CURRENT (A)
EF
F
I
C
I
EN
C
Y
36V
48V
75V

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