1
VSX60MD23 REV D 5/02
Product: www.cdpowerelectronics.com
60 Watt Dual Output Quarter Brick DC/DC Converter
3.3V & 5.0V Dual Output
2.3" x 1.5" x 0.5"
90% Efficiency
Low Output Noise
Input Filtering
Remote On/Off, Input Side
Output Voltage Trim, +/-10%
-40C° to +100C° Baseplate Temp.
Output Current Limit, Self-Start
1,500 Vdc Isolation, Input to Output
UL/CUL 1950, EN60 950
18-36 Vdc and 36-75 Vdc Input
Models
Continuous Short Circuit
Protection
Non-latching Protection:
Input Undervoltage
Input Overvoltage
Output Overvoltage
Overtemperature
Output Voltage Tracking at Turn-on
and Turn-off
No Minimum Load Current
Corporate: www.cdtechno.com
Corporate: www.cdtechno.com
Product: www.cdpowerelectronics.com
VSX60xD35
The VSX60 Series are dual output
converters with 18-36V and 36-75V
input models with 3.3Vdc and 5Vdc
outputs. The industry quarter-pak size of
2.3" x 1.5" x 0.5" coupled with 90%
efficiency is an industry high-density
breakthrough.
These converters utilize Vx high density
technology. This technology has been
featured in our highly efficient VKP and
VKA series now successfully in use
worldwide. The very high 90%
efficiency minimizes the requirement for
heat-sinking and the low output ripple
minimizes the need for additional
filtering. For maximum flexibility, power
can be traded between outputs as
required. The VSX60 series feature
virtually all of the options required by
design engineers but not at the
competition’s typical additional price
for each option. This multitude of
features are standard on the VSX60
series.
VSX60
VSX60-U
APPLICATIONS
Distributed Power Architectures
Workstations
EDP Equipment
Telecommunications
OPTIONS
Choice of Remote On/Off Logic
Configuration
Heatsink Available for Extended
Operation
ADDITIONAL INFORMATION
See Application Note DCAN-40
at www.cdpowerelectronics.com
PARAMETER SYMBOL MIN MAX UNIT
Input Voltage:
VSX60LD35 Vi 100 Vdc
VSX60MD35 Vi 36 75 Vdc
I/O Isolation Voltage 1500 Vdc
I/P to case 1500 Vdc
O/P to case 200 Vdc
Operating Case Temperature T -40 100 °C
ABSOLUTE MAXIMUM RATINGS
2
VSX60xD35 REV D 5/02
Product: www.cdpowerelectronics.com
SPECIFICATIONS, ALL MODELS
Specifications are at TCASE = +40°C nominal input voltage unless otherwise specified.
INPUT
PARAMETER SYMBOL MIN TYP MAX UNITS
Output voltage
( Over all conditions of I/P voltage, load
and temperature)
3.3 Vout (V2) 3.3 Vo 3.2 _ 3.4 Vdc
5.0 Vout (V1) 5.0 Vo 4.8 _ 5.2 Vdc
Output Voltage Setpoint
(Vi=48, Io3=9A, Io5=6A, Tc=25°C)
3.3 Vout (V2) 3.3 Vo,set 3.26 3.30 3.34 Vdc
5.0 Vout (V1) 5.0 Vo,set 4.96 5.02 5.08 Vdc
Output Ripple and Noise Voltage
(peak-to-peak, 100 MHz BW)
3.3 Vout (V2) _ _ _ 60 mv p-p
5.0 Vout (V1) _ _ _
80 mv p-p
Output Current
(Total module O/P power should not
exceed 60 Watts)
3.3 Vout (V2) Io3 _ _15A
5.0 Vout (V1) Io5 _ _12A
Output Current Limit Inception
(Vo=95% of Vo nom)
3.3 Vout (V2) Io3cli 19.0 21.0 23.0 A
5.0 Vout (V1) Io5cli 12.5 13.5 15.0 A
Output Short Ckt Current 16 19 22 A
(Max impedance across short circuit = 65mΩ)
3.3 Vo 16 19 22 A
5.0 Vo 11 14 17 A
Efficiency (Vi=48V, Io3=9A,Io5=6A, Tc=70°C) η89 90 _ %
Dynamic Response (∆Io/∆t=0.2A/µsec.
Vi=48V, Tc=25°C, either O/P)
Load change of 50% Io max; at any
operating load up to Iomax or Pomax
Peak Deviation outside settling point – – 2 _ %Vo nom
OUTPUT Under any conditions, the voltage of V1 will always be greater or equal to that of V2.
PARAMETER SYMBOL MIN TYP MAX UNITS
Operating Input Voltage
VSX60LD Vi 18 24 36 VDC
VSX60MD Vi 36 48 75 VDC
Maximum Input Current
(Vi=0V to Vi max, Io=Io max)
VSX60LD Ii max 5.0 A
VSX60MD Ii max 2.25 A
I/P Reflected Ripple Current 400 mA p-p
No Load Input Current IiNL 50 mA
On/Off Activated Input Current IiQ 17 mA
3
VSX60xD35 REV D 5/02
Product: www.cdpowerelectronics.com
GENERAL
PARAMETER SYMBOL MIN TYP MAX UNITS
Isolation Specifications
Isolation Capacitance _ _ 1000 _ pF
Isolation Resistance _ 10 _ _
MΩ
Remote On/Off (open collector equivalent,
signal referenced to -Vin terminal)
VSx60xD35 Preferred Logic (negative)
Logic Low - Module On
Logic High - Module Off
VSX60xD35-1 - Optional Logic (positive)
Logic Low - Module Off
Logic High - Module On
Logic Low: At Von/off = 0V Von/off 0 _ 70 Vdc
Ion/off _ _ 200 µA
Turn On Time (Vo within 1% of steady state)
From Application of Vin _ _ 7 10 mSecs
From Remote On/Off Activation) _ _ 3 4 mSecs
Input Undervoltage Lockout
(Turn Off & Turn On Voltages Track)
Turn On (VSX60LD35) 15 16.5 18 Vdc
Turn On (VSX60MD35) _ 30 33 36 Vdc
Turn Off (VSX60LD35) 13.5 15 16.5 Vdc
Turn Off (VSX60MD35) _ 27 30 33 Vdc
Input Overvoltage Lockout
(Turn Off & Turn On Voltages Track)
Turn On (VSX60LD35) 37 38.5 40 Vdc
Turn Off (VSX60MD35) _ 76 80 84 Vdc
Turn On (VSX60LD35) 36 38.5 41 Vdc
Turn On (VSX60MD35) _ 74.5 78.5 82.5 Vdc
Output Overvoltage Set Point
(Non-latching independent control loop)
3.3 Vo VO3OV clamp 3.8 4.0 4.3 Vdc
5.0 Vo VO3OV clamp 5.85 6.1 6.35 Vdc
Overtemperature Limiting Tc 105 115 125 °C
Weight
VSX60xD35, VSX60xD35-1 67 Grams
VSX60xD35-U, VSX60xD35-1U 44 Grams
Output Trim
Tie Trim to +3.3 Vo for trim down 3.3 Vo VO3td _ -10 _ %
5.0 Vo VO5td _ -10 _ %
Tie Trim to O/P RTN for trim up 3.3 Vo VO3td _ 10 _ %
5.0 Vo VO5td _ 10 _ %
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VSX60xD35 REV D 5/02
Product: www.cdpowerelectronics.com
To Find Model Number
VSX60 xD35 - 1 U
Device Family
VSX60MD23 (Quarter Brick, 60 Watt DC/DC)
Where X is Input Range
L = 18-36Vdc; M = 36-75 Vdc
Logic: No Number = Preferred Logic (Negative);
1 = Optional Logic (Positive)
Package
No Letter = Encapsulated; U = Unencapsulated
Model Numbers
VSX60LD35
VSX60LD35-1
VSX60MD35
VSX60MD35-U
VSX60MD35-1
VSX60MD35-1U
ORDERING INFORMATION
MECHANICAL
Dimensions are in inches (millimeters).
Tolerances: x.xx in. + 0.02 in.
x.xxx in. +0.01 in.
Pinout Key
1+Vin
2 On/Off
3-Vin
4 +3.3 Vout
5 O/P RTN
6Trim
7 +5.0 Vout
.125 (3.18)
.125 (3.18)
.375 (9.53)
.000
.150
(3.81)
.000
.750
(19.05)
1
2
3
7
6
5
4
2.30
(58.42)
1.50
(38.10)
.50
(12.70)
.145
(3.68)
.150
(3.81)
2.000
(50.80)
1.200
(30.48)
.150
(3.81)
PIN 1
M3 THREAD
4 PLACES
0.051 (1.30)
7 PLACES
0.144 (3.66)
4 PLACES
RECOMMENDED PCB HOLE PATTERN
(VIEW OF PCB, THROUGH UNIT)
.600
(15.24)
.600
(15.24)
.350
(8.89)
0.040 (1.02) 7 PLACES
2.000
(50.80)
NOTES:
1. Marked with: specific model ordered, date
code, job code.
2. MATERIAL: Units are encapsulated in a low
thermal resistance molding compound which has
excellent chemical resistance and electrical
properties in high humidity environments and
over a wide operating temperature range. The
encapsulant and outer shell of the unit have
UL94V-0 ratings. Lead material is solder plated
to allow ease of solderability.
3. IMPORTANT: When utilizing the PEM nuts for
board mounting, it is required to follow guidelines
in application note DCAN-40 available on the
web at www.cdpowerelectronics.com.
CASE OUTLINE
.375 (9.53)
.350
(8.89)
Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to
be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or
completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby
disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising
from any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose
and in user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace
applications.
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Tel: 800.547.2537 Fax: 520.295.4160
C&D Technologies, (NCL)
Milton Keynes MK14 5BU UK
Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545
