CDtechno VKQ100MS1V8 Datasheet

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VKQ100MS1V8

40 Amp, 1.8 Vout, Quarter Brick DC/DC Converter

The VKQ100MS1V8 DC/DC
converter presents an economical and
practical solution for distributed power
system architectures which require high
power density and efficiency while
maintaining system modularity and
upgradeability. With the ability to operate
over a wide input voltage range of 36 to
75 Vdc, this module is ideal for
telecommunications and battery backup

FEATURES

 36 - 75V Input Range
 Small Size: 1.5" x 2.3" x .50"
 High Efficiency: >85%
 Fixed Frequency Operation

400kHz

 Primary Remote On/Off
 Adjustable Output Voltage
 Brick Wall Current Limiting
 On Board Input Differential

Filter

 Synchronous Rectification
 No Minimum Load Requirement

applications where input flexibility must
be combined with output voltage
regulation. In addition, the output is fully
isolated from the input, allowing for a
variety of polarity and grounding
configurations.
Innovative circuit design using surface
mount components results in a compact,
efficient and reliable solution to DC/DC
conversion needs. Internal power

 Remote Sense
 No Heatsink Required
 No External Components

Required

 Safety per UL/CUL 60950,

EN 60950, Operational
Insulation Meets TNV-SELV
Isolation Requirements

APPLICATIONS

 Distributed Power Architectures
 Telecommunications
 Battery Powered Systems
 Workstations

dissipation is minimized by the
VKQ100MS1V8’s high efficiency and is
aided by a metal baseplate to which all
heat dissipative elements are coupled.

The control circuitry of the
VKQ100MS1V8 has been designed to
provide overvoltage protection as well as
current limiting for continuous short­circuit protection.

PRODUCT SELECTION CHART

NOMINAL INPUT RATED OUTPUT RATED OUTPUT INPUT CURRENT EFFICIENCY

VOLTAGE VOLTAGE CURRENT NOM MIN TYP

MODEL (VDC) (VDC) (A) (A) (%) (%)

VKQ100MS1V8 48 1.80 40 1.90 85 85.5

ORDERING

INFORMATION

MODEL NO. PART NO.

VKQ100MS1V8 6064912

VKQ100MS1V8 REV A 4/2003

ABSOLUTE MAX.

RA TINGS

Output Short-Circuit
Duration Continuous

Internal Power Dissipation 12.7 Watts
Lead Temperature

(soldering, 10 seconds max) +300°C
Continuous Input Voltage 75 VDC

Storage Temperature +125°C
Input to Output Isolation 1500 VDC

Input Voltage (non-operating) 100 VDC

SPECIFICATIONS

Unless otherwise specified, all specifications are at TA = +25°C.

PARAMETER CONDITIONS MIN NOM MAX UNITS

Voltage Range (Vin) 36 48 75 Vdc
Reflected Ripple Current
Input Ripple Rejection (100 Hz – 1KHz) Vin = 48 Vdc; Io = 40 A. -30 dB
No Load Input Current Vin = 48 Vdc; Io = 0 A. 90 100 mA
Quiescent Input Current
Primary On/Off Disabled Vin = 48 Vdc; Io = 40 A. 4 mA

Power Dissipation Vin = 48 Vdc.
No Load 4.00 4.50 W
Standby, Primary On/Off Disabled 0.20 W

Maximum Input Current Vin = 36 Vdc; Io = 40 A. 2.50 A

Inrush Charge Vin = 75 Vdc. 0.165 mC

Input Under Voltage Protection Tamb = -40°C to +60°C;
Shut down 31.50 32.50 Vdc

Turn On 32.50 33.70 Vdc

Input Over Voltage Protection Tamb = -40°C to +60°C;

INPUTOUTPUT

Shut down 76.50 79.00 Vdc
Turn On 76.00 78.00 Vdc

Input Under Voltage Protection Tamb = +25°C; Io = 0A to 40A

Shutdown 32.00 32.25 Vdc

Turn On 33.00 33.50 Vdc

Input Over Voltage Protection Tamb = -40°C to +60°C;
Shut down 77.70 79.00 Vdc

Turn On 76.20 77.60 Vdc

OUTPUT

Nominal Voltage (Vnom) 1.800 Vdc
Output Current (Io)
Rated Power
Set Point Accuracy Vin = 48 Vdc; Io = 20 A;

Line Regulation Vin = 36 Vdc to 75 Vdc;

Load Regulation Vin = 36 Vdc to 75 Vdc;

Ripple & Noise

Temperature Drift Tamb = -40°C to +60°C;
Current Limit Inception Vin = 48 Vdc. 42 55 A

Output Voltage Adjust Range Vin = 48 Vdc; Io = 0-40 A -5 +10 %Vnom
Short Circuit Current Vin = 48 Vdc. 40 60 A
Turn – On Time Vin = 48 Vdc; Io = 0-40 A

Over Voltage Protection Set Point Vin = 48 Vdc; Io = 30 A. 2.15 2.90 Vdc
Transient Response 50% to 100% Load Step to

Peak Deviation Co = 470µF; Vin = 48Vdc 260 mV
Settling Time 110 µS

2

3

1

2

Vin = 48 Vdc; Io = 40 A. 3 A pk-pk

Io = 0 A to 40 A

Io = 0 A to 40 A

Io = 0 A to 40 A

Vin = 36 Vdc to 75 Vdc. 0 40 A
Vin = 36 Vdc to 75 Vdc. 0 72 W

Tamb = -40°C to +60°C. 1.5 % of Vnom

T amb = +25°C 1.0 % of Vnom

Tamb = -40°C to +60°C;

Io = 40 A. 0.30 0.50 % of Vnom

T amb = +25°C 0.20 0.30 % of Vnom

Io = 0 A to 40 A.

Tamb = -40°C to +60°C; 0.50 0.75 % of Vnom

Tamb = +25°C; Vin = 48Vdc 0.30 0.60 % of Vnom

Vin = 36-75 Vdc; Io = 0-40 A;

TA = -40°C to +60°C

f

< 20 MHz Bandwidth. 160 mV pk-pk

Vin = 48 Vdc; Io = 40 A. 0.005 0.01 % / °C

Output to within 1% of Vnom 40 50 ms

di/dt = 75A/µS;

GENERAL

Efficiency
Switching Frequency Vin = 36 Vdc-75 Vdc; Io = 0-40 A 380 400 420 KHz
Remote Sense Compensation Vin = 48 Vdc 0.200 Vdc
Remote On / Off Control Inputs Vin = 36 Vdc-48 Vdc; Io = 0-40 A

Primary
Sink Current – Logic Low 0.60 1.60 mA
Vlow 0.70 0.75 Vdc
Vhigh N/A N/A N/A Open Collector

GENERAL

Calculated MTTF Vin = 48 Vdc; Io = 40 A
Per Telcordia TR-NWT-000332 TBD Hours
Per MIL=HDBK217E TBD Hours
Operating Ambient Temperature -40 +70 °C

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Vin = 48 Vdc; Io = 40 A. 85 %

Tamb = -40°C to +60°C

VKQ100MS1V8 REV A 4/2003

2

SPECIFICATIONS Unless otherwise specified, all specifications are at T

= +25°C.

A

PARAMETER CONDITIONS MIN NOM MAX UNITS

ISOLATION

Input to Output 1500 Vdc
Input to Base Plate 1500 Vdc
Output to Base Plate 500 Vdc
Resistance Input to Output 10 MΩ
Capacitance Input to Output 2000 pF

ISOLA TION

Leakage Current V(input – output) = 240 Vac, 60 Hz 180 µA, rms

Notes:

1. A future Application Note will detail the technique used to measure the reflected ripple current.

2. Refer to Power Derating Curve below for details on Output Current Derating with Ambient Temperature. A future Application Note will detail air flow
characterization.

3. Refer to performance curves section (pages 4 and 5) for variation in output ripple and noise with Ambient Temperature, Input Voltage and Output Current. The
unit requires a ceramic capacitor of 0.022µFacross measurement terminals. A future Application Note will detail measurement set up for output ripple and noise.

4. Refer to performance curves section for variation in efficiency against Input Voltage, Ambient Temperature, Output Load and Frequency.

MECHANICAL

VKQ100MS1V8 (6064912)

PIN ASSIGNMENT

No. Function

1 +Vin
2 On/Off
3 -Vin
4 -Vout
5 -Sense
6 Trim
7 +Sense
8 +Vout

PIN SIDE UP

NOTES:

General Tolerance: +.020
Pin Location Tolerance: +.010
Unit Weight: 34g / 1.2oz.
PIN MATERIAL: COPPER
PIN FINISH: TIN-LEAD

29400

POWER DERA TING CURVE (Vin = 36Vdc - 75Vdc)

Air Speed LFM/CFM

40

36

32

28

24

20

16

Output Current (A)

12

8

1300/11.3
1200/10.4
1100/9.5

1000/8.7
900/7.8

800/6.9
700/6.1
600/5.2

500/4.3

400/3.5

300/2.6

200/1.7

4

0

80/0.730/0.3

-40-30-20-100 10203040506070

100/0.9

Temperature (Deg 0C)

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VKQ100MS1V8 REV A 4/2003

3

TYPICAL PERFORMANCE CURVES

100

90

80

70

60

50

40

Efficiency (%)

30

20

10

0

0 4 8 12 16 20 24 28 32 36 40

Output Current (A)

EFFICIENCY (%) vs. INPUT VOL T AGE @ TA +250C; Io = 40A

86

86

EFFICIENCY (%) vs. OUTPUT CURRENT (A) @ TA +250C; Vin = 48Vdc

85

85

Efficiency (%)

84

84

83

36 39 42 45 48 51 54 57 60 63 66 69 72 75

Input V oltage (Vdc)

EFFICIENCY (%) vs. AMBIENT TEMP. (0C) @ Vin = 48Vdc; Io = 40A

86.0

85.5

85.0

84.5

84.0

83.5

Efficiency (%)

83.0

82.5

82.0

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70

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T emperature (0C)

VKQ100MS1V8 REV A 4/2003

4

TYPICAL PERFORMANCE CURVES

120

OUTPUT RIPPLE & NOISE (mV pk-pk) vs. OUTPUT LOAD (A) @ 20MHz; TA +250C; Vin = 48Vdc

110

100

90

80

70

60

O/P Ripple & Noise (mV pk-pk)

50

0 4 8 1216202428323640

Output Load (A)

140

OUTPUT RIPPLE & NOISE (mV pk-pk) vs. INPUT VOL TAGE (Vdc) @ 20MHz; TA +250C; Io = 40A

135

130

125

120

115

110

105

O/P Ripple & Noise (mV pk-pk)

100

36 39 42 45 48 51 54 57 60 63 66 69 72 75

Input V oltage (Vdc)

OUTPUT RIPPLE & NOISE (mV pk-pk) vs. AMBIENT TEMP. (0C) @ 20MHz; Vin = 48Vdc; Io = 40A

160

150

140

130

120

110

O/P Ripple & Noise (mV pk-pk)

100

90

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70

Ambient T emperature (0C)

Power Electronics Division, Americas

3400 E Britannia Drive, Tucson, Arizona 85706

Any data, prices, descriptions or specifications presented herein are subject to revision by C&D T echnologies, 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 T echnologies, 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 product s be used in any life support or aviation or aerospace applications.

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Tel: [phone] Fax: [phone]

VKQ100MS1V8 REV A 4/2003

C&D Technologies, EMEA/Asia/Pacific

T el: [phone] Fax: [phone]

Milton Keynes MK14 5BU UK

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