MAX5069A Maxim Integrated, MAX5069A Datasheet

MAX5069A

Manufacturer Part Number

MAX5069A

Description

MAX5069A Evaluation Kit

Manufacturer

Maxim Integrated

Datasheet

1.MAX5069A.pdf (9 pages)

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The MAX5069A evaluation kit (EV kit) is a fully assembled

and tested circuit board that contains a high-efficiency,

120W isolated push-pull DC-DC converter. The circuit is

configured for a +12V output voltage and provides up to

10A of output current. The circuit can be powered from

either a +36V to +72V or -36V to -72V DC source, as used

in the telecom/datacom markets, industrial environments,

or in automotive 42V power systems.

High efficiency up to 91% is achieved at 10A while using

two n-channel primary-side MOSFETs switching at up to

90% combined duty cycle. On the secondary-side,

reduced output-voltage ripple and high efficiency is

achieved through full-wave rectification from a center-

tapped planar transformer. Galvanic isolation up to 500V

is achieved by an optocoupler and the planar surface-

mount transformer. The optocoupler helps in providing

isolated secondary-side regulation.

Operation at 500kHz allows the use of small magnetics

and output capacitors. A SYNC input is featured to ease

synchronization to an external clock. The EV kit provides

cycle-by-cycle current-limit protection. Additional steady-

state fault protection is provided by the integrating fault

protection that reduces average dissipated power during

continuous overload conditions. The MAX5069A also has

a programmable input undervoltage lockout (UVLO) for

protection during brownout conditions. The EV kit may be

used to evaluate other versions of the MAX5069.

Warning: The MAX5069A EV kit is designed to operate

with high voltages. Dangerous voltages are present on

this EV kit and on equipment connected to it. Users who

power up this EV kit or power the sources connected to it

must be careful to follow safety procedures appropriate to

working with high-voltage electrical equipment.

Under severe fault or failure conditions, this EV kit may

dissipate large amounts of power, which could result in

the mechanical ejection of a component or of component

debris at high velocity. Operate this kit with care to avoid

possible personal injury.

19-3513; Rev 0; 11/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

________________________________________________________________ Maxim Integrated Products

General Description

MAX5069A Evaluation Kit

*With 200LFM airflow.

DESIGNATION

C18, C19, C20

MAX5069AEVKIT

120W High-Efficiency, Isolated, Push-Pull DC-DC

Converter

±36V to ±72V Input Range

+12V Output at 10A

Load

91% Efficiency at 48V and 10A

Programmable Input UVLO

Cycle-by-Cycle Current-Limit Protection

Programmable Integrating Fault Protection

500kHz Oscillator Frequency

External Clock SYNC Input

Fully Assembled and Tested

C5, C6, C7,

C2, C3, C4

OUT

C10

PART

Regulation Better than 0.1% Over Line and

QTY

Ordering Information

TEMP RANGE

0.1µF ±10%, 16V X7R ceramic

capacitor (0603)

Murata GRM39X7R104K016AD

1µF ±10%, 100V X7R ceramic

capacitors (1210)

AVX 1210C105KAT9A

47µF ±10%, 16V X5R ceramic

capacitors (1210)

Murata GRM32ER61C476K

0.1µF ±10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H104K

10µF ±20%, 35V, low-impedance

electrolytic capacitor (5mm x 6mm)

Sanyo 35CV10KX

12pF ±5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1885C1H120J

0°C to +50°C*

Component List

DESCRIPTION

IC PACKAGE

16 TSSOP

Features

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