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For further information contact :

NORTH AMERICA

ASTEC AMERICA, INC,.

6339 Paseo Del Lago,

Carlsbad CA 92009,

USA.

Tel : 760-757-1880

Fax : 760-930-4700

EUROPE

ASTEC EUROPE LTD.

High Street,Wollaston,

Stourbridge,

West Midlands,

DY8 4PG

U.K.

Tel : 01384-440044

Fax : 01384-440777

ASIA

ASTEC POWER SYSTEMS

6th Floor, CDW Building,

382-392 Castle Peak Road,

Tsuen Wan,

N.T.

Hong Kong

Tel : 852 24117429

Fax : 852 24113610

APA701-AK60 Rev. 02 May 97

AMPSS

Astec Modular Power Supply System

™

AK60A

Economy

Series Highlights

•

High Efficiency - up to 88%

100W Output Power

Excellent transient response

85°C baseplate/case operating temperature

Low output ripple and noise

High Reliability - over 1 million hours MTBF

Wide input voltage range

Designed to meet Telecom specification

Fixed switching frequency

Series

50-100W Output Power

DC-DC Converter Module

Technical Reference Manual

Contents

AK60A Economy Series

Introduction ...................................................................................................... 2

Special Features .............................................................................................. 2

Ordering Information ........................................................................................ 3

Safety ............................................................................................................... 3

Electrical Specifications .................................................... 4

Absolute Maximum Ratings – all models ......................................................... 4

Pin Connections - all models ............................................................................ 5

Electrical Specifications for 24V Input Models (AK60A-024L-xxxFyy) ............. 6

Insulation - all models ...................................................................................... 6

Electrical Specifications for 48V Input Models (AK60A-048L-xxxFyy) ............. 8

Functional Description .................................................... 10

Remote Sense (+SENSE, -SENSE) .............................................................. 10

Enable Control (ENABLE) .............................................................................. 10

PRI AUX ......................................................................................................... 10

CLK IN ............................................................................................................ 11

Output Voltage Adjustment (V ADJ) ............................................................... 12

Signal Common (S COM) .............................................................................. 12

Design Considerations .................................................... 13

Input Bulk Capacitors ..................................................................................... 13

Remote Loads ................................................................................................ 13

Input Undervoltage Protection ........................................................................ 13

Conducted EMI .............................................................................................. 13

Output Ripple and Noise ................................................................................ 13

Input Fusing ................................................................................................... 13

Break Regulation ............................................................................................ 14

Overtemperature Protection ........................................................................... 14

MTBF ............................................................................................................. 14

Thermal Data ................................................................................................. 14

Application Example ........................................................ 15

Mechanical Information ................................................... 16

Dimensions .................................................................................................... 16

Recommended PCB Layout ........................................................................... 17

Heatsink Mounting Information ...................................................................... 18

AMPSS

Reference Manual

Rev. 02 May 97

Introduction

AK60A Economy Series DC-DC Converters

+ IN

MOSFET

switcher

+ OUT

– IN

– OUT

300V modules

only

S COM

7 ENABLE

8 CLK-IN

PRI AUX 6

S COM 5

PRI AUX

Over-

voltage

protection

PWM

control

and

gating

RSV 2

+ SENSE 1

3 V ADJ

4 - SENSE

AMPSS

POWER MODULE

Voltage

sensing

and

control

+ SENSE

ENABLE

22 23 24

26 27 28

OSC

– SENSE

CLK IN

Primary side

Secondary side

V ADJ

Internal

temperature

sensor

Introduction

The AK60A is an isolated, single output DC to DC

converter module, providing up to 100W output. The

AK60A features primary side control, remote enable,

remote sensing and a baseplate operating tempera-

ture of up to 85°C.

Special Features

•

High Efficiency - up to 88%

•

500 KHz fixed frequency switching

•

85°C baseplate/case operating temperature (with

•

no derating)

Low output ripple and noise

Excellent transient response

High Reliability - over 1 million hours MTBF

Wide input voltage range

TTL compatible enable control

Adjustable output voltage

Overtemperature and short circuit protection

Rev. 02 May 97

AMPSS

Reference Manual

AK60A Economy Series

Ordering Information

Input

Voltage

48V

24V

Output

Voltage

12V

15V

12V

15V

24V

Output

Current

10A

15A

20A

4.2A

6.3A

8.3A

3.3A

5.0A

6.7A

10A

15A

20A

4.2A

6.3A

8.3A

3.3A

5.0A

6.7A

2.1A

3.1A

4.2A

Output

Power

50W

75W

100W

50W

75W

100W

50W

75W

100W

50W

75W

100W

50W

75W

100W

50W

75W

100W

50W

75W

100W

Model Number

AK60A-048L-050F10

AK60A-048L-050F15

AK60A-048L-050F20

AK60A-048L-120F04

AK60A-048L-120F06

AK60A-048L-120F08

AK60A-048L-150F03

AK60A-048L-150F05

AK60A-048L-150F07

AK60A-024L-050F10

AK60A-024L-050F15

AK60A-024L-050F20

AK60A-024L-120F04

AK60A-024L-120F06

AK60A-024L-120F08

AK60A-024L-150F03

AK60A-024L-150F05

AK60A-024L-150F07

AK60A-024L-240F02

AK60A-024L-240F03

AK60A-024L-240F04

Please contact Astec for information on other output voltages, power ranges and configurations.

Safety

UL:

CSA:

VDE:

CE:

UL1950

CSA C22.2 No.950

VDE 0805 (48Vin only)

EN60950 (48Vin only)

CE Mark (48Vin only)

Please contact Astec for information on specific module approvals.

Note:

Ensure all modules are used according to the Installation Instructions provided with each module.

All modules are designed to meet the following specifications:

ETS300-132-2

ETS300-386-1

(1)

EN55022-A

(1)

EN55022-B

(1)

EN41003

IEC6100-44

(1)

IEC6100-45

(1)

IEC950

VDE0871-A

(1)

VDE0878-A

(1)

BTNR2511(5)

(1)

Require additional external circuitry for full compliance. Please refer to application section of this manual

or contact technical support office for further information.

AMPSS

Reference Manual

Rev. 02 May 97