Q36SR12019_08092012

2

TECHNICAL SPECIFICATIONS

Note1: For applications with higher output capacitive load, please contact Delta

Note2: Trim down range -10% for 18Vin ~75Vin, Trim up range +10% for 20Vin ~ 75Vin.

PARAMETER

NOTES and CONDITIONS

Q36SR12019

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Vdc

Continuous

0

80

Vdc

Transient (100ms)

100ms

100

Vdc

Operating Temperature

-40

85

°C

Storage Temperature

-55

125

°C

Input/Output Isolation Voltage

1500

Vdc

INPUT CHARACTERISTICS

Operating Input Voltage

18

48

75

Vdc

Input Under-Voltage Lockout

Turn-On Voltage Threshold

16

17

18

Vdc

Turn-Off Voltage Threshold

15

16

17

Vdc

Lockout Hysteresis Voltage

0.3

1

1.8

Vdc

Maximum Input Current

100% Load, 18Vin

17

A

No-Load Input Current

Vin=48V,Io=0A

100

mA

Off Converter Input Current

Vin=48V

10

mA

Inrush Current (I

1

A

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=Io.max, Tc=25°C

11.82

12.00

12.18

Vdc

Output Voltage Regulation

Over Load

Io=Io, min to Io, max

±3

±15

mV

Over Line

Vin=18V to 75V

±3

±15

mV

Over Temperature

Tc=-40°C to 110°C

±120

mV

Total Output Voltage Range

Over sample load, line and temperature

11.64

12.00

12.36

V

Output Voltage Ripple and Noise

5Hz to 20MHz bandwidth

Peak-to-Peak

Full Load, 1µF ceramic, 10µF tantalum

100

mV

RMS

Full Load, 1µF ceramic, 10µF tantalum

mV

Operating Output Current Range

Vin=18V to75V

0

19

A

Operating Output Current Range

Output Over Current Protection(hiccup model)

Output Voltage 10% Low

110

140

%

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient

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

Positive Step Change in Output Current

75% Io.max to 50% Io.max

550

mV

Negative Step Change in Output Current

50% Io.max to 75% Io.max

550

mV

Settling Time (within 1% Vout nominal)

200

µs

Turn-On Transient

Start-Up Time, From On/Off Control

28

mS

Start-Up Time, From Input

28

mS

Output Capacitance (note1)

Full load; 5% overshoot of Vout at startup

0

5000

µF

EFFICIENCY

100% Load

Vin=24V

93.5

%

100% Load

Vin=48V

93.0

%

60% Load

Vin=48V

92.0

%

ISOLATION CHARACTERISTICS

Input to Output

1500

Vdc

Isolation Resistance

10

MΩ

Isolation Capacitance

1000

pF

FEATURE CHARACTERISTICS

Switching Frequency

260

KHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Von/off

0.8

V

Logic High (Module Off)

Von/off

2.4

5

V

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off)

Von/off

0.8

V

Logic High (Module On)

Von/off

2.4

5

V

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

Ion/off at Von/off=0.0V

1

mA

Leakage Current (for both remote on/off logic)

Logic High, Von/off=5V

Output Voltage Trim Range(note 2)

Pout ≦ max rated power,Io ≦ Io.max

-10

10

%

Output Voltage Remote Sense Range

Pout ≦ max rated power,Io ≦ Io.max

10

%

Output Over-Voltage Protection

Over full temp range; % of nominal Vout

115

140

%

GENERAL SPECIFICATIONS

MTBF

Io=80% of Io, max; Ta=25°C, normal input,600FLM

M hours

Weight

Without heat spreader

45.5

grams

Weight

With heat spreader

61.1

grams

Over-Temperature Shutdown ( Without heat spreader)

Refer to Figure 19 for Hot spot location

135

°C

Over-Temperature Shutdown ( NTC resistor )

Refer to Figure 19 for NTC resistor location

130

°C

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