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Corporate: www.cdtechno.com Corporate: www.cdtechno.com Product: www.cdpowerelectronics.com
VSX75MD35
75 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
VSX75
UL/CUL 1950, EN60 950 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
Remote On/Off, Input Side Output Voltage Trim, +/-10%
VSX75-U
Fixed Frequency Operation -40C to +100C Baseplate Temp. Output Current Limit, Self-Start 1,500 Vdc Isolation, Input to Output
APPLICATIONS
Distributed Power Architectures Workstations EDP Equipment Telecommunications
OPTIONS
Choice of Remote On/Off Logic Configuration Heatsink Available for Extended Operation
The VSX75 Series are 75 Watt, compact, high-efficiency, high-density dual output converters with a 36-75V input and with 3.3Vdc and 5.0Vdc outputs. The industry quarter-pack size of 2.3" x 1.5" x 0.5" coupled with 90% efficiency is an industry high-density breakthrough. These converters utilize V Series 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 VSX75 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 VSX75 Series.
ADDITIONAL INFORMATION
See Application Note DCAN-40 at www.cdpowerelectronics.com
ABSOLUTE MAXIMUM RATINGS
PARAMETER Input Voltage: VSX75MD35 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
Product: www.cdpowerelectronics.com
VSX75MD35
REV B
5/02
1
SPECIFICATIONS, ALL MODELS
Specifications are at TCASE = +40C nominal input voltage unless otherwise specified.
PARAMETER
INPUT Voltage Range Input Reflected Ripple Current Maximum Input Current No Load Input Current On/Off Activated Input Current Input Undervoltage Lockout Turn On Turn Off Input Overvoltage Lockout Turn Off Turn On
SYMBOL
MIN
36
TYP
48
MAX
75 500 3 60 25 36 33 84 82.5
UNITS
VDC mA A mA mA VDC VDC VDC VDC
INPUT
Peak - Peak Vin = 30V, Pout 75W
30 27 76 74.5
33 30 80 78.5
PARAMETER
Output Power Output Efficiency Set Point Voltage V1 (3.3V) V2 (5.0V) Output Current V1 (3.3V) V2 (5.0V) Output Ripple And Noise Voltage V1 (3.3V) V2 (5.30V) Output Adjust Range
CONDITIONS
Io1=11.5A, Io2=7.5A Io1=11.5A Io2=7.5A Total Module Output Power Should Not Exceed 75 Watts 100 MHz BW
MIN
89 3.26 4.96 0 0
TYP
MAX
75
UNITS
Watts % VDC VDC A A mVP-P mVP-P %
Under any conditions, the voltage of V1 will always be greater or equal to that of V2.
3.30 5.02
3.34 5.08 23 15 60 80 +10
Both Outputs Will Adjust at the Same Time and by the Same % VIN = 36 to 75 I1=11.5A, I2=7.5A I1= 0 to 23A, I2=0A I1=0A, I2=0 to 15A I1= 0A, I2=0 to 15A I1=0 to 23A, I2=0A
-8
Output Temperature Drift Line Regulation Load Regulation V1 (3.3V) V2 (5.0V) Load Cross Regulation V1 (3.3V) V2 (5.0V) Output Current Limit Inception V1 (3.3V) V2 (5.0V) Short Circuit Current V1 (3.0V) V2 (5.0V) Output Overvoltage Set Point (Non-latching independent control loop) V1 (3.3V) V2 (5.0V) Transient Response Settling Time Peak Deviation Switching Frequency
.
0.02 0.10
0.05 0.20
% /C %
3.0 2.5 1.0 5.0 24 16 22 15 27 18 25 18 30 20 30 20
% of Nom % of Nom % of Nom % of Nom A A A A
OUTPUT
3.8 5.85 (/t=0.2A/sec either output) Load change of 40% of max at any operating load up to max and P max
4.0 6.1
4.3 6.35 100 4
VDC VDC sec % KHz
330
Product: www.cdpowerelectronics.com
VSX75MD35
REV B
5/02
2
PARAMETER
ISOLATION SPECIFICATIONS Input to Output Input to Case Output to Case Resistance Input to Output Capacitance Input to Output Leakage Current FEATURE SPECIFICATIONS Remote On/Off (open collector equivalent, signal referenced to -VIN terminal) VSX75MD35 Preferred Logic (negative) Logic Low - Module On Logic High - Module Off VSX75MD35-1 Optional Logic (Positive) Logic Low - Module Off Logic High - Module On
SYMBOL
MIN
1500 1500 200 10
TYP
MAX
UNITS
VDC VDC VDC M pF A, rms
VISO = 240VAC, 60Hz
1000 90
GENERAL
Von/off Low Von/off High on/off Turn On Time From Application of VIN From Remote On/Off Activation Weight VSX75MD35, VSX75MD35-1 VSX75MD35-U, VSX75MD35-1U TEMPERATURE Operation /Specification Storage Shutdown Shutdown (Hysteresis) Thermal Impedance (Case to Ambient) (VO within 1% of steady state)
0 2
0.4 Open Collector 200 7 3 67 44 10 4
VDC VDC A mSecs mSecs Grams Grams
Case Case Case Free Air
-40 -55 +105
+115 10 12.2
+100 +125 +125
C C C C C/Watt
Product: www.cdpowerelectronics.com
VSX75MD35
REV B
5/02
3
GRAPHS
EFFICIENCY VS. OUTPUT LOAD LOAD REGULATION VS. LOAD DISTRIBUTION
EFFICIENCY VS. INPUT VOLTAGE
EFFICIENCY VS. BASEPLATE TEMPERATURE
OUTPUT VOLTAGE RIPPLE VS. TEMPERATURE AT FULL LOAD
FULL LOAD EFFICIENCY VS. LOAD DISTRIBUTION
REFLECTED RIPPLE VS. INPUT VOLTAGE
OUTPUT RIPPLE VS. LOAD
Product: www.cdpowerelectronics.com
VSX75MD35
REV B
5/02
4
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 +3.3 Vout O/P RTN Trim +5.0 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-40 available on the web at www.cdpowerelectronics.com.
PIN 1
.150 (3.81)
M3 THREAD 4 PLACES
ORDERING INFORMATION
To Find Model Number
VSX75MD35 - 1 U
Device Family VSX75MD35 (Quarter Brick, 75 Watt DC/DC) Logic: No Number = Preferred Logic (Negative); 1 = Optional Logic (Positive) Package No Letter = Encapsulated; U = Unencapsulated
Model Numbers
VSX75MD35 VSX75MD35-U VSX75MD35-1 VSX75MD35-1U
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
VSX75MD35
REV B
5/02
5

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