Product # PQ60018EKx25

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0005113 Rev. B

06/12/09

Page 4

Input:

Output:

Current:

Part No.:

35-75V

1.8V

25A

PQ60018EKx25

Technical Specification

PQ60018EKx25 (1.8V, 25A) Electrical Characteristics

Ta = 25°C, airflow rate = 300 LFM, Vin = 48Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C baseplate temperature

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

Parameter

Min.

Typ.

Max. Units Notes & Conditions

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Non-Operating

100

V

Continuous

Operating

75

V

Continuous

Operating Transient Protection

100

V

100ms transient, square wave

Isolation Voltage

Input to Output

2000

V dc

Basic insulation

Operating Temperature

-40

100

°C

Storage Temperature

-55

125

°C

Voltage at ON/OFF input pin

0

13.5

V

INPUT CHARACTERISTICS

Operating Input Voltage Range

35

48

75

V

Input Under-Voltage Lockout

Turn-On Voltage Threshold

33.0

34.0

35.0

V

Turn-Off Voltage Threshold

31.5

32.3

33.5

V

See Note 1

Lockout Voltage Hysteresis

1.2

1.7

2.2

V

Maximum Input Current

1.6

A

100% Load, 35V Vin, nominal Vout

No-Load Input Current

62

mA

Disabled Input Current

7.7

12

mA

Inrush Current Transient Rating

0.03

A2s

Response to Input Transient

88

mV

1000V/ms input transient

Input Reflected Ripple Current

1.6

mA

RMS thru 10μH inductor; Figures 13 & 15

Input Terminal Ripple Current

50

mA

RMS; Figures 13 & 14

Recommended Input Fuse

20

A

Fast acting external fuse recommended

Recommended External Input Capacitance

47

µF

Typical ESR 0.1-0.2Ω; Figure 13

Input Filter Component Values (L\C)

1\2.35

µH\µF Internal values; see Figure E

OUTPUT CHARACTERISTICS

Output Voltage Set Point

1.782

1.80

1.818

V

Output Voltage Regulation

Over Line

±0.1\1.8

%\mV

Over Load

±0.2\3.6

%\mV

Over Temperature

±5

mV

Total Output Voltage Range

1.764

1.8

1.836

V

Over sample, line, load, temperature & life

Output Voltage Ripple and Noise

20MHz bandwidth; see Note 2

Peak-to-Peak

86

mV

Full load; see Figures 13 & 16

RMS

30

mV

Full load; see Figures 13 & 16

Operating Output Current Range

0

25

A

Subject to thermal derating; Figures 5 - 8

Output DC Current-Limit Inception

25.5

27.0

29.0

A

Output DC Current-Limit Shutdown Voltage

1.6

V

Back-Drive Current Limit while Enabled

8

13

22

A

Negative current drawn from output

Back-Drive Current Limit while Disabled

0.6

mA

Negative current drawn from output

Maximum Output Capacitance Electrolytic

10

mF

Nominal Vout at full load (resistive load)

EFFICIENCY

100% Load

84

%

Figures 1 - 4

50% Load

85

%

Figures 1 - 4