Linear Technology LTC3805/-5 Bedienungsanleitung

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1311

TELECOM DC/DC CONVERTER

LTC3805/-5

DESCRIPTION

Demonstration circuit 1311 is a Telecom isolated

DC/DC converter featuring the LTC3805/-5 constant

frequency current mode flyback controller. The

DC1311 converts 18V to 72V input voltage to an

isolated 3A of output current at 3.3V. The 300kHz

constant frequency operation is maintained down to

very light load to reduce low frequency noise

generated over a wide range of load current. The

converter provides high output voltage accuracy

(typically ±2%) over wide load range with no

minimum load requirement.

The DC1311 also provides non-isolated design by

removing opto coupler and LTC4430 circuit. The

demonstration circuit can be easily modified to

generate different output voltages up to 15V. As

output voltage is increased, the maximum

output current must be reduced to limit the

output power to no more than 10W. Higher

output voltages and currents can be achieved by

changing the MOSFET, transformer and output

capacitors. Please consult LTC factory for details.

The DC1311 has a small circuit footprint. It is a high

performance and cost effective solution for Telecom,

Automotive and Power over Ethernet applications.

Design files for this circuit board are available. Call

the LTC factory.

LTC and LT are registered trademarks of Linear Technology Corporation.

QUICK START PROCEDURE

Demonstration circuit 1311 is easy to set up to

evaluate the performance of the LTC3805/-5. For

proper measurement equipment setup refer to

Figure 1 and follow the procedure below.

When measuring the input or output voltage ripple,

care must be taken to minimize the length of the

oscilloscope probe ground lead. Measure the input or

output voltage ripple by connecting the probe tip

directly across the V

or V

OUT

and GND terminals,

see Figure 2.

With power off, connect the input power supply to

+Vin and -Vin.

Move the J1 (RUN) switch to ON position.

Turn the input power source on and slowly

increase the input voltage. Be careful not to exceed

72V. Make sure that the input voltage V

does not

exceed 72V. If higher operating voltage is required,

power components with higher voltage ratings

should be used.

Check for proper output voltage. Vout=3.3V.

If there is no output, temporarily disconnect the

load to make sure that the load is not set too high.

To shut the converter down, move the RUN switch

into OFF position

To synchronize converter to external clock, set

jumper JP2 (SYNC) to ‘EXT’ position, apply signal

to FSET pin. See LTC3805/-5 datasheet for

synchronization signal parameters.

Once the proper output voltage is established,

adjust the load within 3.0A range and observe the

output voltage regulation, ripple voltage, efficiency

and other parameters.

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1311

TELECOM DC/DC CONVERTER

Figure 1. Proper Measurement Equipment Setup

Figure 2. Measuring Input or Output Ripple

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1311

TELECOM DC/DC CONVERTER

Andere Linear Technology Controller Handbücher

Linear Technology

Linear Technology LT3692A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology LTM8033 Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology DC2543A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology LTC2950-2 Bedienungsanleitung

Linear Technology

Linear Technology DC1814A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology DC1669A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology DC1700A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology Analog Devices LTM4622A Bedienungsanleitung

Linear Technology

Linear Technology LT8609 Bedienungsanleitung

Linear Technology

Linear Technology LTC4080 Bedienungsanleitung

Linear Technology

Linear Technology LTC1877 Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology LTM4636 Bedienungsanleitung

Linear Technology

Linear Technology DC1936A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology DC1830B-C Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology LT3507A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology 1158A Bedienungsanleitung

Linear Technology

Linear Technology Analog Devices LT8607B Bedienungsanleitung

Linear Technology

Linear Technology LTM4624EY Bedienungsanleitung

Linear Technology

Linear Technology DC1900A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology DC1366B Bedienungsanleitung

Linear Technology

Linear Technology Analog Devices LTM4676A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology mModule LTM8023 Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology LTM4620A Kurzanleitung zur Einrichtung

Linear Technology

Linear Technology Analog Devices LT8708-1 Bedienungsanleitung

Beliebte Controller Handbücher anderer Marken

Digiplex

Digiplex DGP-848 Betriebsanleitung

YASKAWA

YASKAWA SGM series Bedienungsanleitung

Sinope

Sinope Calypso RM3500ZB Bedienungsanleitung

Isimet

Isimet DLA Series Style 2 Installationshandbuch

LSIS

LSIS sv-ip5a Bedienungsanleitung

Rockwell Automation

Rockwell Automation 1769-L31 Bedienungsanleitung

Airflow

Airflow Uno hab Bedienungsanleitung

ABB

ABB ACS580-01 drives Bedienungsanleitung

Panasonic

Panasonic GM1 Series Bedienungsanleitung

Emerson

Emerson SW93 Bedienungsanleitung

AutoAqua

AutoAqua Smart ATO micro SATO-120P Bedienungsanleitung

Panasonic

Panasonic FP? Positioning Unit RTEX Bedienungsanleitung

Samson

Samson Type 5824 Service-Handbuch

Alpha IP

Alpha IP MIOB 21001 Bedienungsanleitung

Siemens

Siemens OpenAir GMA 1 Series Bedienungsanleitung

Surecom

Surecom SR-629 Bedienungsanleitung

Fishman

Fishman TriplePlay Bedienungsanleitung

Regulus

Regulus SRS1 T Bedienungsanleitung