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dc1693afa

DEMO MANUAL DC1693A

Description

LTM8047

725V Isolated DC/DC

μModule Converter

The demo circuit 1693A is an isolated flyback μModule

DC/DC converter featuring the LTM8047. The demo circuit

is designed for a 5V output from a 4.5V to 30V input.

The typical current capability of the 5V output varies with

input voltage from about 110mA at V

= 4.5V to about

350mA at V

= 30V.

L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of

Linear Technology Corporation. All other trademarks are the property of their respective owners.

perForMAnce sUMMArY

BoArD photo

The LTM8047 data sheet gives complete description of the

device, operation and application information. The data

sheet must be read in conjunction with this demo manual

prior to working on or modifying demo circuit 1693A.

Design files for this circuit board are available at

http://www.linear.com/demo/DC1693A

= 25°C)

PARAMETER CONDITIONS VALUE

Input Voltage Range 4.5V to 30V

Output Voltage V

OUT

= 4.5V to 30V 5.0V

Voltage Ripple V

OUT

= 12V, I

OUT

= 100mA <20mV

Summary of content (6 pages)

PAGE 1
DEMO MANUAL DC1693A LTM8047 725V Isolated DC/DC μModule Converter Description The demo circuit 1693A is an isolated flyback μModule® DC/DC converter featuring the LTM8047. The demo circuit is designed for a 5V output from a 4.5V to 30V input. The typical current capability of the 5V output varies with input voltage from about 110mA at VIN = 4.5V to about 350mA at VIN = 30V. The LTM8047 data sheet gives complete description of the device, operation and application information.
PAGE 2
DEMO MANUAL DC1693A quick start procedure Demo circuit 1693A is an easy way to evaluate the performance of the LTM8047. Refer to Figure 3 for proper measurement equipment setup and follow the procedure below: NOTE: When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the input or output voltage ripple by touching the probe tip directly across the VIN or VOUT and GND terminals. See Figure 4 for proper scope probe technique. 1.
PAGE 3
DEMO MANUAL DC1693A quick start procedure dc1693a F03 Figure 3. DC1693A Proper Equipment Setup GND VIN Figure 4.
PAGE 4
DEMO MANUAL DC1693A parts list ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 C6 CAP., CHIP X7R, 0.1µF, 25V, 10%, 0603 AVX 06033C104KAT 2 1 C4 CAP., CHIP X5R, 4.7µF, 50V, 10%, 0805 TDK C2012X5R1H475K 3 1 C2 CAP., CHIP X5R, 22µF, 16V, 10%, 1206 AVX 1206YD226KAT2A 4 1 C1 CAP., CHIP X5R, 10µF, 50V, 10%, 1210 MURATA GRM32ER71H106KA12L 5 1 R1 RES., CHIP 200, 1%, 1210 VISHAY CRCW1210200RFKEA 6 1 R2 RES.
PAGE 5
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 1 2 3 4 E8 E5 E2 E1 VIN 10uF* 35V +CIN1 OPT VIN R6 OPT C4 4.7uF 50V 0805 C1 10uF 50V 1210 C6 0.1uF 25V A 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. R3 90.
PAGE 6
DEMO MANUAL DC1693A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use.