EVK-VOL1088A: Flyback DC-DC converter. Company advantage inventory.

EVK-VOL1088B: Flyback DC-DC Converter. Company advantage inventory.

General Instructions

EVK-FUJI is used for

Non-Isolated DCM Flyback DC-DC Converter

Has triple output. Therefore, this is a

Point-of-load solutions are suitable for generating

Single power supply provides 3 standard voltages

The power input range is +12V to +28V.

The default output voltage value is +5V.

+3.3V and +1.8V; these can be modified to

Adapt to different voltage requirements.

EVK-FUJI with

Evaluation kit including complete application

Note, electrical schematics and checklist

Material. it allows immediate evaluation

and integrated into the electronic design

high temperature requirements or

MCM Hybrid Project.

Application field

Embedded Power Block

Downhole tools

PoL in Aerospace

?High reliability DC-DC module

feature

Non-isolated topology (flyback)

based on:

1 PWM controller CHT-MAGMA

4 transistors CHT-NMOS8001

Efficiency up to 68%

Switching frequency: 100kHz

Vin range: +12V to +28V

Power Range: 3.5W

Triple output (customizable):

?+5V/400mA

+3.3V/250mA

?+1.8V/250mA

? Set the regulation loop on the +5V output

Optional Linear Regulator

+3.3V/+1.8V output for enhanced

Load Regulation Performance:

?2 x CHT-VEGA suitable to provide

±5% voltage (adjustable

in the range of +4.5V ~ +1.2V)

? Evaluation boards qualified from -55

+175°C (ambient temperature)

Allows short trips up to 200°C

Active Components and Transformers

All pass -55 to +225°C

(Junction)

300°C (Tg) Polyimide PCB

PCB size: 1'' x 3''

General Instructions

EVK-FUJI implements a non-isolated flyback converter designed for discontinuous operation

conduction mode. The regulation loop is the voltage control loop:

- The CHT-MAGMA component implements the control loop and generates local 5V (via

its internal voltage regulator) to drive its internal logic and external switches

transistor

-CHT-NMOS8001 MOSFET implements switching transistor. it offers the best

trade-offs between size, resistivity and switching losses;

- Use 3 additional CHT-NMOS8001 MOSFETs as diodes to perform rectification

in middle school

- Optionally, 2 CHT-VEGA can be implemented on the 5V output bus to generate

3.3V and 1.8V have enhanced regulation.

EVK-FUJI has 2 versions:

- EVK-VOL1088A: In this version, there are no regulators on the +3.3V and +1.8V outputs;

When the load on the different outputs changes as

Not more than ±50% of the nominal value;

-EVK-VOL1088B: In this version, the voltage regulator is used to generate +3.3V and +1.8V

output; this version should be used if load changes of different outputs will have an effect

vary widely, exceeding ±50% of the rated load value, or may reach

zero load condition.

EVK-FUJI is a flexible general-purpose platform that can be used in many DC-DC converters

Configuration beyond the default configuration. Especially the extra customization

Designs designed by FUJI can be considered to meet the following needs (please contact CISSODI

for such requests):

- Can use AC voltage output (default +5V) for flyback control

regulating loop;

- An isolated version can be implemented (instead of the non-isolated default topology);

-Continuous conduction mode can be implemented (instead of discontinuous conduction mode)

conduction default mode); _ - current mode control loop can be implemented (instead of default voltage mode)

control loop);_- Short circuit protection can be implemented (none by default).