TM
33W – 132W DC-DC CONVERTERS
MODEL:
SV28-3.3-50/75/100/150/200
PRELIMINARY DATA SHEET
28VDC INPUT
3.3 VDC @ 10A OUTPUT,
15A OUTPUT,
20A OUTPUT,
30A OUTPUT, or
40A OUTPUT
Designed for Telecom, Wireless,
& Computer Applications
FEATURES
•
Industry Standard Half-
brick Package
•
High Efficiency
•
Constant Frequency
•
Clamp Over-Voltage
Protection
•
Remote Sense
•
Trim Range: -40 to +10%
•
Encapsulated
•
High Power Density:
up to 54 W/cu.in.
•
Low Noise
•
-40 to +100°C Operation
•
105°C Over Temperature
Protection
•
Choice of On/Off Logic
•
UL/CSA/TUV & CE Compliant
•
Threaded Mounting Holes
MODEL SELECTION
Model
Number
Input Output Output
Voltage Voltage Current
(Vdc)
SV28-3.3-200-1 18-36
SV28-3.3-150-1 18-36
SV28-3.3-100-1 18-36
SV28-3.3-75-1
SV28-3.3-50-1
18-36
18-36
(Vdc)
3.3
3.3
3.3
3.3
3.3
(A)
40
30
20
15
10
DESCRIPTION
The SuperVerter series modules are high-density DC-DC converters designed for use in
telecom and other centralized, modular, and distributed power applications. The SV28-3.3
series is a family of 28V input, 3.3V output, half brick modules compatible with the industry
standard footprint. These modules may be used as form, fit, and function replacements for
industry standard, 3.3V half brick modules. These SuperVerter modules use metal
baseplates, planar transformers, and surface mount construction to produce up to 132W of
low noise, 3.3V output power.
RO Associates, Inc.
Sunnyvale, CA
408 744-1450
fax:408 744-1521
email:sales@roassoc.com
SUPERVERTER
DC-DC Converters
TM
preliminary
SV28-3.3-50/75/100/150/200
ABSOLUTE MAXIMUM RATINGS
Exceeding absolute maximum ratings may cause permanent damage and may reduce reliability.
PARAMETER
Input Voltage (+In to –In)
Transient Input Voltage (+In to –In)
Input/ Case Isolation
Output/ Case Isolation
Input/ Output Isolation
Storage Temperature
Operating Temperature
Soldering Temperature (Wave Solder)
Soldering Temperature (Hand Solder)
MIN
MAX
40
50
1500
500
1500
+110
+100
260
390
UNITS
Vdc
Vdc
Vdc
Vdc
Vdc
°C
°C
°C
°C
CONDITIONS
Continuous
100 msec. max.
-40
-40
Baseplate
< 5 sec.
< 7 sec.
ELECTRICAL SPECIFICATIONS
Electrical specifications apply over the entire range of input voltage, output current, and temperature unless indicated.
INPUT PARAMETERS
Input Voltage
Maximum Input Current
SV28-3.3-50
SV28-3.3-75
SV28-3.3-100
SV28-3.3-150
SV28-3.3-200
Inrush Transient
Input Reflected Ripple Current
Input Ripple Rejection
OUTPUT PARAMETERS
Voltage Set Point
Load Regulation
Line Regulation
Voltage Drift w/Temperature
Ripple
Rated Output Current
SV28-3.3-50
SV28-3.3-75
SV28-3.3-100
SV28-3.3-150
SV28-3.3-200
RO Associates, Inc.
MIN
18
TYP
28
MAX
36
2.8
3.9
5.5
8.4
12.2
1
UNITS
Vdc
CONDITIONS
Over Vin range @ full load
5
60
MIN
3.25
TYP
3.30
0.05
0.01
15
MAX
3.35
0.2
0.1
50
150
A
A
A
A
A
2
A sec
mAp-p
dB
UNITS
Vdc
%
%
mV
mV p-p
5Hz to 20MHz, 12µH source impedance
@120 Hz
CONDITIONS
28 Vin, 25°C, full load
0.5 A to full load
Over Vin range
-40 to +100 °C Case
5 Hz to 20 MHz, ripple may exceed
spec below minimum load
At Iout < Iout(min), the output ripple
may exceed the specification. All other
aspects of the unit will function properly
at no load.
0.5
0.5
0.5
0.5
0.5
Sunnyvale, CA
10
15
20
30
40
408 744-1450
A
A
A
A
A
fax:408 744-1521
email:sales@roassoc.com
SUPERVERTER
DC-DC Converters
TM
preliminary
SV28-3.3-50/75/100/150/200
ELECTRICAL SPECIFICATIONS (continued)
Current Limit Inception
SV28-3.3-50
SV28-3.3-75
SV28-3.3-100
SV28-3.3-150
SV28-3.3-200
Short Circuit Current
Switching Frequency
Transient Response Peak
Deviation (0.1A/µsec slew rate)
Transient Response Settling Time
(0.1 A/µsec slew rate)
Efficiency
SV28-3.3-50
SV28-3.3-75
SV28-3.3-100
SV28-3.3-150
SV28-3.3-200
External Load Capacitance
ISOLATION PARAMETERS
Input-to-Output Capacitance
Input-to-Output Resistance
FEATURE PARAMETERS
Trim Range
Remote Sense Compensation
Over Voltage Clamp (Non-
Shutdown, Auto. Recovery)
Over Temperature Shut-down
Turn-On Time
79
79
77
77
74
0
MIN
10
MIN
60
4.0
+105
20
TYP
MAX
110
0.5
5.0
Vout = 90% Vout nominal
7
18
23
34.5
48
370
3
300
13.2
20
26
39.5
52.5
170
A
A
A
A
A
% F.L.
kHz
% Vout
µsec
Vout = 250 mV
Load change from 50% to 75% full load
Vin = 28 V, Tcase = 25 °C, Vout within
1% Vout nominal
Vin = 28 V, full load, Tcase = 70 °C
81.5
81.5
79.5
79
77
10,000
TYP
2000
MAX
%
%
%
%
%
µF
UNITS
pF
M Ohms
UNITS
%Vout
Vdc
Vdc
°C
msec
Electrolytic Capacitor
CONDITIONS
CONDITIONS
35
100W & 150W models only
80% load, Vout within 1% of steady
state
Logic On/Off *
Logic Low Von/off
0
1.2
V
@ Ion/off = 1mA
Ion/off
1.0
mA
@ Von/off = 0V
Logic High: Von/off
15
V
@ Ion/off = 1mA
Ion/off
50
µA
@ Von/off = 15V
* Negative logic on/off is standard, positive logic is optional (delete the “-1” suffix from model number for positive
logic). With negative logic, logic low turns module on, logic high turns it off. The reverse is true for positive logic.
RO Associates, Inc.
Sunnyvale, CA
408 744-1450
fax:408 744-1521
email:sales@roassoc.com
TM
DC-DC Converter
preliminary
SV28-3.3-50/75/100/150/200
MECHANICAL SPECIFICATIONS
MECHANICAL PARAMETERS
Weight
Size
Thermal Resistance, Case-to-
Ambient
MIN
TYP
MAX
UNITS
g (oz.)
Inches
°C/W
CONDITIONS
See Outline Drawing
Tcase = 100 °C
118 (4.2)
0.5 x 2.4 x 2.28
6.6
TRIM CIRCUIT CONFIGURATIONS
+Out
+Out
OUTLINE DRAWING
DIMENSIONS:
INCHES
[MILLIMETERS]
+Sense
+Sense
Trim
Load
Trim
R
trim-dn
2.28
[57.9]
Load
R
trim-up
-Sense
-Sense
2.40
[61.0]
2.00
[50.8]
0.20
[5.1]
0.19
[4.8]
1.90
[48.3]
0.224 Ø MAX
[5.69 Ø MAX]
MOUNTING
INSERTS
M3 x 0.5 THRU
4 PL
0.30
[7.6]
0.400
[10.16]
-IN
-OUT
-Out
-Out
CASE
-S
T
ON/
OFF
Trim Up
Trim Down
+S
0.300
[7.62]
0.300
[7.62]
0.400
[10.16]
+IN
+OUT
TRIM RESISTOR CALCULATIONS
3.3
×
(
100
+
∆
%
) (
100
+
2
× ∆
%
)
R
trim
−
up
=
−
kohms
∆
%
1
.
225
× ∆
%
R
trim
−
down
100
=
−
2
kohms
∆
%
0.47
[11.9]
0.040 [1.02] Ø PIN
FUSED TIN
OVER COPPER
7 PL
0.080 [2.03] Ø PIN
FUSED TIN
OVER COPPER
2 PL
0.40
[10.2]
0.20 MIN
[5.1 MIN]
ALUMINUM HEATSINK SURFACE
0.515 ± 0.020
[13.08 ± 0.5]
∆
%
=
Desired Output Voltage Change (
∆
%
>
0)
R
trim
−
up
=
External Resistor Value to Increase V
o
R
trim
−
down
=
External Resistor Value to Decrease V
o
TOLERANCES:
x.xx in. ± 0.02 in.
[x.x mm. ± 0.5 mm.]
x.xxx in. ± 0.010 in.
[x.xx mm. ± 0.25 mm.]
RO Associates, Inc.
P.O. Box 61419
Sunnyvale, CA 94088
www.roassoc.com
rev 032502
email:sales@roassoc.com
800 443-1450
408 744-1450
fax: 408 744-1521
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