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Corporate: www.cdtechno.com Corporate: www.cdtechno.com Product: www.cdpowerelectronics.com
VSX40MD23
40 Watt Dual Output Quarter Brick DC/DC Converter
2.5V & 3.3V Dual Output 2.3" x 1.5" x 0.5" 89% Efficiency Low Output Noise Input Filtering Remote On/Off, Input Side Output Voltage Trim, +/-10% Fixed Frequency Operation -40C to +100C Baseplate Temp. Output Current Limit, Self-Start 1,500 Vdc Isolation, Input to Output UL/CUL 1950, EN60 950 36 to 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
VSX40
VSX40-U
APPLICATIONS
Distributed Power Architectures Workstations EDP Equipment Telecommunications
The VSX40 Series are dual output converters with a 36-75V input. The industry quarter-pak size of 2.3" x 1.5" x 0.5" coupled with 89% 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 89% efficiency minimizes the requirement for
OPTIONS
Choice of Remote On/Off logic Configuration Heatsink Available for Extended Operation
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 VSX40 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 VSX40 series.
ADDITIONAL INFORMATION
See Application Note DCAN-41 at www.cdpowerelectronics.com
ABSOLUTE MAXIMUM RATINGS
PARAMETER Input Voltage: VSX40MD23 I/O Isolation Voltage I/P to case O/P to case Operating Case Temperature SYMBOL MIN MAX UNIT
Vi
T
-40
100 1500 1500 200 100
Vdc Vdc Vdc Vdc C
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VSX40MD23
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1
SPECIFICATIONS, ALL MODELS
Specifications are at TCASE = +40C nominal input voltage unless otherwise specified.
PARAMETER
Operating Input Voltage VSX40MD23 Maximum Input Current (Vi=0V to Vi max, Io=Io max) VSX40MD23 I/P Reflected Ripple Current No Load Input Current On/Off Activated Input Current
SYMBOL
Vi
MIN
36
TYP
48
MAX
75
UNITS
VDC
INPUT
Ii max IiNL IiQ 35 20
1.5 260
A mA p-p mA mA
PARAMETER
Output voltage (Note 1) Over all conditions of I/P voltage, load and temperature) 2.5 Vout (V2) 3.3 Vout (V1) Output Voltage Setpoint (Vi=48, Io 2=9A, Io 3=6A, Tc=25C) 2.5 (V2) 3.3 (V1) Output Ripple and Noise Voltage (peak-to-peak, 100 MHz BW) 2.5 (V2) 3.3 (V1) Output Current (Total module O/P power should not exceed 40 Watts) 2.5 (V2) 3.3 (V1) Output Current Limit Inception (Vo=95% of Vo nom) 2.5 (V2) 3.3 (V1) Output Short Ckt Current (Max impedance across short circuit = 65m) 2.5 Vo 3.3 Vo Efficiency (Vi=48V, Io2=8A,Io3=6A, Tc=40C) Dynamic Response (Io/t=0.2A/sec.Vi=48V, Tc=25C, either O/P) Load change of 50% Io max; at any operating load up to Iomax or Pomax Peak Deviation outside settling point
Under any conditions, the voltage of V1 will always be greater or equal to that of V2.
SYMBOL
MIN
TYP
MAX
UNITS
2.5 Vo 3.3 Vo
2.375 3.225
_ _
2.555 3.450
Vdc Vdc
2.5 Vo,set 3.3 Vo,set
2.450 3.310
2.510 3.390
Vdc Vdc
_ _
_ _
_ _
60 80
mv p-p mv p-p
Io2 Io3
_ _
_ _
16 12.12
A A
Io2cli Io3cli
16.8 12.7
18.5 14.0
21.0 15.9
A A
OUTPUT
15 11 88
19 13.2 89
22 17 _
A A %
-
-
2
_
%Vo nom
NOTE: 1. Worst case voltage conditions occur with full load drawn from one output only, zero being drawn from the other. For worst case voltages at less extreme loading conditions, consult the factory.
Product: www.cdpowerelectronics.com
VSX40MD23
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5/02
2
PARAMETER
Isolation Specifications Isolation Capacitance Isolation Resistance Feature Specifications Remote On/Off (open collector equivalent, signal referenced to -Vin terminal) VSx40MD23 Preferred Logic (negative) Logic Low - Module On Logic High - Module Off VSX40MD23-1 - Optional Logic (positive) Logic Low - Module Off Logic High - Module On Logic Low: At Von/off = 0V Turn On Time (Vo within 1% of steady state) From Application of Vin From Remote On/Off Activation) Input Undervoltage Lockout (Turn Off & Turn On Voltages Track) Turn On Turn Off Input Overvoltage Lockout (Turn Off & Turn On Voltages Track) Turn Off Turn On Output Overvoltage Set Point (Non-latching independent control loop) 2.5 Vo 3.3 Vo Overtemperature Shutdown Hysteresis Weight VSX40MD23, VSX40MD23-1 VSX40MD23-U, VSX40MD23-1U Output Trim Tie Trim to +2.5 Vo for trim down 2.5 Vo Tie Trim to O/P RTN for trim up 3.3 Vo 2.5 Vo 3.3 Vo
SYMBOL
_ _
MIN
_ 10
TYP
1000 _
MAX
_ _
UNITS
pF M
Von/off Ion/off _ _
0
_ _
50 200 10 4
Vdc A mSecs mSecs
GENERAL
_ _
7 3
_ _
30 27
33 30
36 33
Vdc Vdc
_ _
76 74.5
80 78.5
84 82.5
Vdc Vdc
VO2OV clamp VO3OV clamp Tc
2.7 3.6 105
2.9 3.9 115 10 67
3.2 4.2 125
Vdc Vdc C C Grams
VO2td VO3td VO2td VO3td
_ _ _ _
-10 -10 10 10
_ _ _ _
% % % %
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VSX40MD23
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3
MECHANICAL
Dimensions are in inches (millimeters). Tolerances: x.xx in. + 0.02 in. x.xxx in. +0.01 in. 2.30 (58.42) CASE OUTLINE 0.144 (3.66) 4 PLACES
.600 (15.24) 1.50 (38.10)
.350 (8.89) .000 .350 (8.89)
1 2 3
7 6 5 4
.375 (9.53) .125 (3.18) .125 (3.18) .375 (9.53) 0.051 (1.30) 7 PLACES
.600 (15.24) .750 (19.05) .50 (12.70)
.150 (3.81) .000
.145 (3.68) .150 (3.81)
0.040 (1.02) 7 PLACES 2.000 (50.80) Pinout Key 1.200 (30.48)
1 2 3 4 5 6 7 +Vin On/Off -Vin +2.5 Vout O/P RTN Trim +3.3 Vout
RECOMMENDED PCB HOLE PATTERN (VIEW OF PCB, THROUGH UNIT)
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-41 available on the web at www.cdpowerelectronics.com.
PIN 1
.150 (3.81)
M3 THREAD 4 PLACES
ORDERING INFORMATION
To Find Model Number
VSX40MD23 - 1 U
Device Family VSX40MD23 (Quarter Brick, 40 Watt DC/DC) Logic: No Number = Preferred Logic (Negative); 1 = Optional Logic (Positive) Package No Letter = Encapsulated; U = Unencapsulated
Model Numbers
VSX40MD23 VSX40MD23-U VSX40MD23-1 VSX40MD23-1U
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
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.
2.000 (50.80)
Product: www.cdpowerelectronics.com
VSX40MD23
REV E
5/02
4

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