DS_V48SC3R320_06262013

E-mail: DCDC@delta.com.tw

http://www.deltaww.com/dcdc

P2

TECHNICAL SPECIFICATIONS

PARAMETER

NOTES and CONDITIONS

V48SC3R320

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

80

Vdc

Transient

100ms

100

Vdc

Operating Ambient Temperature

-40

85

°C

Storage Temperature

-55

125

°C

Input/Output Isolation Voltage

1500

Vdc

INPUT CHARACTERISTICS

Operating Input Voltage

36

48

75

Vdc

Input Under-Voltage Lockout

Turn-On Voltage Threshold

32.0

34.0

36.0

Vdc

Turn-Off Voltage Threshold

30.0

32.0

34.0

Vdc

Lockout Hysteresis Voltage

1

2

3

Vdc

Maximum Input Current

Full Load, 36Vin

2.2

A

No-Load Input Current

Vin=48V, Io=0A

50

mA

Off Converter Input Current

Vin=48V, Io=0A

5

mA

Inrush Current (I2t)

1

A2s

Input Reflected-Ripple Current

P-P thru 12µH inductor, 5Hz to 20MHz

20

mA

Input Voltage Ripple Rejection

120 Hz

-50

dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point

Vin=48V, Io=0, Tc=25°C

3.25

3.30

3.35

Vdc

Output Voltage Regulation

Over Load

Vin=48V, Io=Io min to Io max

±10

mV

Over Line

Vin=36V to 75V, Io=Io min

±10

mV

Over Temperature

Vin=48V, Tc= min to max case temperatrue

±33

mV

Total Output Voltage Range

over sample load, line and temperature

3.20

3.40

Vdc

Output Voltage Ripple and Noise

5Hz to 20MHz bandwidth

Peak-to-Peak

Full Load, 1µF ceramic, 10µF tantalum

50

mV

RMS

Full Load, 1µF ceramic, 10µF tantalum

15

mV

Operating Output Current Range

0

20

A

Output DC Current-Limit Inception

Output Voltage 10% Low

22

30

A

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient

48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

Positive Step Change in Output Current

50% Io.max to 75%

100

mV

Negative Step Change in Output Current

75% Io.max to 50%

100

mV

Settling Time (within 1% Vout nominal)

100

µs

Turn-On Transient

Start-Up Time, From On/Off Control

20

ms

Start-Up Time, From Input

20

ms

Maximum Output Capacitance

10000

µF

EFFICIENCY

100% Load

Vin=48V

91.0

%

60% Load

Vin=48V

91.5

%

ISOLATION CHARACTERISTICS

Input to Output

1500

Vdc

Isolation Resistance

10

MΩ

Isolation Capacitance

1000

pF

FEATURE CHARACTERISTICS

Switching Frequency

420

465

510

kHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

0

0.8

V

Logic High (Module Off)

3.5

10

V

ON/OFF Current (for both remote on/off logic)

Ion/off at Von/off=0.0V

mA

Leakage Current (for both remote on/off logic)

Logic High, Von/off=10V

uA

Output Voltage Trim Range

-20

10

%

Output Voltage Remote Sense Range

10

%

Output Over-Voltage Protection

Over full temp range; % of nominal Vout

115

150

%

GENERAL SPECIFICATIONS

MTBF

Io=80% of Io max; Tc=25°C;Airflow=300LFM,

Issue 3

13.77

M hours

Weight

Without heat spreader

15.0

grams

Weight

With heat spreader

21.0

grams

Over-Temperature Shutdown

( Without heat spreader)

Refer to Figure 18 for Hot spot 1 location

(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

127

°C

Over-Temperature Shutdown

(With heat spreader)

Refer to Figure 20 for Hot spot 2 location

(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

122

°C

Over-Temperature Shutdown

( NTC resistor )

Refer to Figure 18 for NTC resistor location

125

°C

Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.