Advertisement
RT7285CGJ6
your power partner.
Evaluation Board
RT7285CGJ6 Evaluation Board
Purpose
The RT7285C is a synchronous step-down converter with Advanced Constant On-Time (ACOT™) mode control. It
can deliver up to 1.5A output current from a wide input voltage range of 4.3V to 18V. This document explains the
function and use of the RT7285C evaluation board (EVB) and provides information to enable operation and
modification of the evaluation board and circuit to suit individual requirements.
Table of Contents
PURPOSE ................................................................................................................................................................................ 1
INTRODUCTION ...................................................................................................................................................................... 2
KEY PERFORMANCE SUMMARY TABLE ................................................................................................................................... 2
BENCH TEST SETUP CONDITIONS............................................................................................................................................ 3
SCHEMATIC, BILL OF MATERIALS AND BOARD LAYOUT ........................................................................................................... 5
MORE INFORMATION........................................................................................................................................................... 10
IMPORTANT NOTICE FOR RICHTEK REFERENCE DESIGNS ...................................................................................................... 10
UG7285CGJ6-00
January 2015
1
http://www.richtek.com
Advertisement
Table of Contents
Related Manuals for Richtek RT7285CGJ6
Summary of Contents for Richtek RT7285CGJ6
-
Page 1: Table Of Contents
PURPOSE ....................................1 INTRODUCTION ..................................2 KEY PERFORMANCE SUMMARY TABLE ........................... 2 BENCH TEST SETUP CONDITIONS............................3 SCHEMATIC, BILL OF MATERIALS AND BOARD LAYOUT ......................5 MORE INFORMATION................................10 IMPORTANT NOTICE FOR RICHTEK REFERENCE DESIGNS ...................... 10 UG7285CGJ6-00 January 2015 http://www.richtek.com... -
Page 2: Introduction
Evaluation Board Number: PCB007_V1 Default Input Voltage Max Output Current 1.5A Default Output Voltage 1.2V Default Marking & Package Type RT7285CGJ6, TSOT-23-6 Operation Frequency Steady 500kHz at all loads Other Key Features ACOT for Fast Transient Response Protection Output Under-Voltage Protection (hiccup mode):... -
Page 3: Bench Test Setup Conditions
RT7285CGJ6 your power partner. Evaluation Board Bench Test Setup Conditions Headers Description and Placement Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to evb_service@richtek.com... - Page 4 RT7285CGJ6 your power partner. Evaluation Board Output Voltage Setting Set the output voltage with the resistive divider (R2, R3) between VOUT and GND with the midpoint connected to FB. The output is set by the following formula: The installed VOUT capacitors (C9, C10) are 22μF, 16V X5R ceramic types. Do not exceed their operating voltage range and consider their voltage coefficient (capacitance vs.
-
Page 5: Schematic, Bill Of Materials And Board Layout
RT7285CGJ6 your power partner. Evaluation Board Schematic, Bill of Materials & Board Layout EVB Schematic Diagram C3, C4: 10μF/50V/X5R, 1206, TDK C3216X5R1H106K C9, C10: 22μF/16V/X5R, 1210, Murata GRM32ER61C226K L1: 2μH TAIYO YUDEN NR8040T2R0N, DCR=9mΩ UG7285CGJ6-00 January 2015 http://www.richtek.com... - Page 6 RT7285CGJ6 your power partner. Evaluation Board Bill of Materials Reference Part number Description Package Manufacture RT7285CGJ6 DC-DC Converter TSOT-23-6 (FC) RICHTEK 10μF/±10%/50V/X5R C3, C4 C3216X5R1H106K160AB 1206 Ceramic Capacitor 22μF/±10%/16V/X5R C9, C10 GRM32ER61C226KE20# 1210 Murata Ceramic Capacitor 0.1μF/±10%/50V/X7R C6, C8, C12...
- Page 7 RT7285CGJ6 your power partner. Evaluation Board EVB Layout Top View (1 layer) Bottom View (4 Layer) UG7285CGJ6-00 January 2015 http://www.richtek.com...
- Page 8 RT7285CGJ6 your power partner. Evaluation Board Component Placement Guide—Component Side (1 layer) PCB Layout—Component Side (1 Layer) UG7285CGJ6-00 January 2015 http://www.richtek.com...
- Page 9 RT7285CGJ6 your power partner. Evaluation Board PCB Layout—Bottom Side (4 layer) UG7285CGJ6-00 January 2015 http://www.richtek.com...
-
Page 10: More Information
THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE TO BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES.
Need help?
Do you have a question about the RT7285CGJ6 and is the answer not in the manual?
Questions and answers