Product # NQ20x20ETC20

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-NS2020W Rev. C

03/06/09

Page 3

Input:

Outputs:

Current:

Package:

9 - 20 V

0 - 20 V

20 A

Eighth-brick

Technical Specification

NQ20x20ETC20 ELECTRICAL CHARACTERISTICS

Ta = 25 °C, airflow rate = 300 LFM, Vin = 12 V dc unless otherwise noted; full operating temperature range is -40 °C to +105 °C ambient temperature with appropriate power derating.

Specifications subject to change without notice.

Parameter

Vout

Min.

Typ.

Max. Units Notes & Conditions

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Non-Operating

All

0

30

V

Continuous

Operating

All

20

V

Continuous

Storage Temperature

All

-55

125

°C

Voltage at ON/OFF input pin

All

0

5.5

V

RECOMMENDED OPERATING CONDITIONS

Input Voltage Range

All

9

20

V

Turn on at 10V

Input Fuse Rating

All

25

A

Fast blow external fuse recommended

Input Current

20

A

Input current max equals output rated current

External Input Capacitance

All

100

µF

ESR < 1.5 Ω

Output Voltage

All

0

20

V

Output Current

All

0

20

A

Output voltage dependent

INPUT CHARACTERISTICS

Input Under-Voltage Lockout

Turn-On Voltage Threshold

All

9.2

9.5

10

V

Turn-Off Voltage Threshold

All

8.1

8.5

8.9

V

Lockout Hysteresis

All

1.0

V

Input Current Limit

All

24

A

No-Load Input Current

12

115

mA

“

24

120

mA

“

48

175

mA

Disabled Input Current

All

80

mA

Input Filter Components Value (C\L\C)

All

20\1.1\60

µF\µH\µF

OUTPUT CHARACTERISTICS

Output Voltage Range

All

0

20

V

Set output by Rtrim resistor

Operating Output Current Range

All

0

20

A

Output Voltage Regulation

Total Output Voltage Range

All

±160 mV ±4%*Vout

Sense pin, over sample, line, load, temp. & life

Output Voltage Ripple and Noise (pk-pk/36Vin)

3.3

10

mV

10 Vin Full Load; 100uF; 20 MHz b.w.

“

5

20

mV

"

“

20

40

mV

Output DC Over Current limit

All

24

A

Effective on input, output condition

External Output Capacitance

All

0

5000

µF

ESR > 1 mΩ

C Option: Isense voltage

No load

All

1.25

V

Full load

All

1.83

V

20 A load

Output resistance of Isense

All

10

kΩ

C Option: Itrim voltage

Voltage at no load

All

0.12

V

Voltage at maximum load

All

2.12

V

20 A load

Pull-Up Resistance of Itrim Pin

All

10.2

kΩ

Pull-Up Voltage

All

2.5

V

C Option: Reverse Current

All

2

µA

Enabled or Disabled

TEMP LIMITS FOR POWER DERATING

Semiconductor Junction Temperature

All

125

°C

Package rated to 150 °C

Board Temperature

All

125

°C

ULrated max operating temp 130 °C

Baseplate Temperature

All

100

°C

EFFICIENCY

100% Load; 12 Vin

3.3

83

%

“ ; 48 Vin

5

88

%

“ ; 24 Vin

20

94

%

W mode only

50% Load; 12 Vin

3.3

88

%

“ ; 48 Vin

5

91

%

“ ; 24 Vin

20

95

%

W mode only