Product # PQ65180QGA06

Phone 1-888-567-9596

Doc.# 005-2QG581D Rev. B

9/14/04

Page 3

Technical Specification

48Vin 18Vout 5.6A

Quarter

Quarter

Brick

Brick

Parameter

Min.

Typ.

Max.

Units

Notes & Conditions

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Non-Operating

100

V

continuous

Operating

80

V

continuous

Operating Transient Protection

100

V

100ms transient, square wave

Isolation Voltage (input to output)

2000

V

Basic insulation, Pollution Degree 2

Operating Temperature

-40

100

°C

Storage Temperature

-55

125

°C

Voltage at ON/OFF input pin

-2

18

V

INPUT CHARACTERISTICS

Operating Input Voltage Range

40

48

75

V

Input Under-Voltage Lockout

Turn-On Voltage Threshold

37

38

39

V

Turn-Off Voltage Threshold

33.5

34.5

35.5

V

Lockout Voltage Hysteresis

2.5

3.5

4.5

V

Maximum Input Current

3.0

A

100% Load, 40 Vin

No-Load Input Current

80

120

mA

Disabled Input Current

1.6

3

mA

Inrush Current Transient Rating

0.04

Response to Input Transient

600

mV

1000V/ms input transient

Input Reflected Ripple Current

4

mA

P-P thru 10µH inductor; Figs. 13 & 15

Input Terminal Ripple Current

60

mA

RMS; Figs. 13 & 14

Recommended Input Fuse

20

A

fast blow external fuse recommended

Input Filter Component Values (C\L)

2.46\4.7

µF\µH

internal values, see Figure E

Recommended External Input Capacitance

47

µF

Typical ESR 0.1-0.2

OUTPUT CHARACTERISTICS

Output Voltage Set Point

17.73

18.00

18.27

V

Factory pre-set with Sense(+), Sense(-) open

Output Voltage Regulation

Over Line

+0.04 \ 7 +0.2 \ 36

%\mV

Over Load

+0.04 \ 7 +0.2 \ 36

%\mV

Over Temperature

+112

+300

mV

Total Output Voltage Range

17.43

18.57

V

over sample, line, load, temperature & life

20MHz bandwidth; Fig. 13 & 16

Peak-to-Peak

50

120

mV

Full Load, see Figures 13 & 16

RMS

15

30

mV

Full Load, see Figures 13 & 16

Operating Output Current Range

0

5.6

A

Subject to thermal derating; Figs. 5-8

Output DC Current-Limit Inception

5.9

6.7

7.7

A

Output Voltage 10% Low; Figure 17

Output DC Current-Limit Shutdown Voltage

10

V

Back-Drive Current Limit while Enabled

0.1

0.3

0.6

A

Negative current drawn from output

Back-Drive Current Limit while Disabled

0

10

50

mA

Negative current drawn from output

Maximum Output Capacitance

2,000

µF

18Vout at 5.6A Resistive Load

DYNAMIC CHARACTERISTICS

Input Voltage Ripple Rejection

70

dB

120 Hz; Fig. 20

Output Voltage During Load Current Transient

For a Step Change in Output Current (0.1A/µs)

250

mV

50% to 75% to 50% Iout max; Figure 11

For a Step Change in Output Current (5A/µs)

250

mV

50% to 75% to 50% Iout max; Figure 12

Settling Time

800

µs

to within 1% Vout nom

Turn-On Transient

Turn-On Time

10

12

15

ms

Full load, Vout=90% nom.; Figs. 9 & 10

Start-Up Inhibit Time

180

200

240

ms

-40°C to +125°C; Figure F

Output Voltage Overshoot

0

%

2,000 µF load capacitance, Iout = 0A

EFFICIENCY

100% Load

91.5

%

Figures 1 - 4

50% Load

90.5

%

Figures 1 - 4

TEMPERATURE LIMITS FOR POWER DERATING CURVES

Semiconductor Junction Temperature

125

°C

Package rated to 150°C

Board Temperature

125

°C

UL rated max operating temp 130°C

Transformer Temperature

125

°C

See Figures 5 - 8 for derating curves

ISOLATION CHARACTERISTICS

Isolation Voltage (dielectric strength)

2000

V

Isolation Resistance

30

M

Ω

470

pF

PQ65180QGA06 ELECTRICAL CHARACTERISTICS

temperature with appropriate power derating. Specifications subject to change without notice.

Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com)

Note 2: Higher values of isolation capacitance can be added external to the module.