MCP1631HV-500E/ST Microchip Technology, MCP1631HV-500E/ST Datasheet

IC INTEGRATED PWM HS 20TSSOP

MCP1631HV-500E/ST

Manufacturer Part Number
MCP1631HV-500E/ST
Description
IC INTEGRATED PWM HS 20TSSOP
Manufacturer
Microchip Technology

Specifications of MCP1631HV-500E/ST

Package / Case
20-TSSOP
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
2MHz
Duty Cycle
10%
Voltage - Supply
3.5 V ~ 16 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-40°C ~ 125°C
Frequency-max
2MHz
Output Voltage
3.3 V to 5 V
Output Current
250 mA
Input Voltage
3 V to 5.5 V
Switching Frequency
2 MHz
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Frequency
1MHz
Digital Ic Case Style
TSSOP
No. Of Pins
20
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Leaded Process Compatible
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MCP1631RD-DCPC1 - REF DES BATT CHARG OR LED DRIVERMCP1631RD-MCC2 - REFERENCE DESIGN MCP1631HV
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
MCP1631HV
Digitally Controlled
Programmable Current Source
Reference Design
© 2009 Microchip Technology Inc.
DS51798A

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MCP1631HV-500E/ST Summary of contents

Page 1

... Programmable Current Source © 2009 Microchip Technology Inc. MCP1631HV Digitally Controlled Reference Design DS51798A ...

Page 2

... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 3

... The Microchip Web Site ........................................................................................ 3 Customer Support ................................................................................................. 3 Document Revision History ................................................................................... 4 Chapter 1. Product Overview 1.1 Introduction ..................................................................................................... 5 1.2 What is the MCP1631HV Digitally Controlled Programmable Current Source Reference Design? ...................................................................... 6 1.3 What the MCP1631HV Digitally Controlled Programmable Current Source Kit Includes ................................................................................... 6 Chapter 2. Installation and Operation 2.1 Introduction ..................................................................................................... 7 2 ...

Page 4

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design NOTES: DS51798A-page iv © 2009 Microchip Technology Inc. ...

Page 5

... Programmable Current Source Reference Design as a LED driver or a battery charger. The manual layout is as follows: • Chapter 1. “Product Overview” – Important information about the MCP1631HV Digitally Controlled Programmable Current Source Reference Design. • Chapter 2. “Installation and Operation” – Includes instructions on how to get started with this user’ ...

Page 6

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters Initial caps Quotes Underlined, italic text with right angle bracket Bold characters N‘Rnnnn Text in angle brackets < > ...

Page 7

... RECOMMENDED READING This user's guide describes how to use the MCP1631HV Digitally Controlled Programmable Current Source Reference Design. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. MCP1631 Data Sheet, "High-Speed, Microcontroller-Adaptable, Pulse Width Modulator" ...

Page 8

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design DOCUMENT REVISION HISTORY Revision A (May 2009) • Initial Release of this Document. DS51798A-page 4 © 2009 Microchip Technology Inc. ...

Page 9

... Reference Design is user programmable. Multiple user functions may be selected by re-compiling the source code. The board can drive LEDs or charge NiMH, NiCd or Li-Ion batteries with a maximum current of 1A. In Charger Mode, the MCP1631HV Digitally Controlled Programmable Current Source Reference Design provides a constant current charge (Ni-based chemistry) and constant current/constant voltage (Li-Ion based chemistry) with preconditioning, cell temperature monitoring (for Ni-based) and battery pack fault monitoring ...

Page 10

... Maximum output current can be modified in the source code. Absolute max is 1A @8.5W. 2: For an easy start with the MCP1631HV Digitally Controlled Programmable Current Source Reference Design Board, this option is not enabled in the compiled .hex file which is available on the Microchip website. The board may also be re-programmed to charge Li-Ion, NiMH, and NiCd battery packs ...

Page 11

... MCP1631HV external signals include the input oscillator, the reference voltage, the feedback voltage and the current sense. The MCP1631HV generates a square-wave output signal to drive the powertrain switch. The power train used for the MCP1631HV Digitally Controlled Programmable Current Source Reference Design is a Single-Ended Primary Inductive Converter (SEPIC) ...

Page 12

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design 2.3 GETTING STARTED The MCP1631HV Digitally Programmable Current Source Reference Design is fully assembled and tested for driving and dimming power LEDs. At the output, one or more LEDs can be connected in parallel or series topology. With the default firmware, the board can drive a 700 mA load with 9V overvoltage protection. This board requires an external voltage source within a range of +3.5V to +16V input. User supplied LED’ ...

Page 13

... The MCP1631HV Digitally Programmable Current Source Reference Design firmware may be re-programmed with the charger profile for Li-Ion or NiMH/NiCd battery packs. Firmware profile pre-proccessor definitions are : • #define LION_SUPPORT • #define NIMH_SUPPORT DISABLED • #define LED_DRIVER_SUPPORT ENABLED Setting one of the profiles to ENABLED and the other two to DISABLED will select the ENABLED profile at compile time ...

Page 14

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design I 5.0 4.0 3.0 2.0 1.0 0.0 0 FIGURE 2-3: DS51798A-page 10 V BAT T/10 I OUT Time (min) NiMH Three-Cell (3.6V/600 mAh) Charged at Maximum 0.75C. 1.0 0.8 0.6 0.4 0.2 0.0 80 100 © 2009 Microchip Technology Inc. ...

Page 15

... APPLYING A LOAD TO THE MCP1631HV DIGITALLY CONTROLLED PROGRAMMABLE CURRENT SOURCE REFERENCE DESIGN 1. To apply an LED load to the MCP1631HV Digitally Controlled Programmable Current Source Reference Design, the anode of the LED should be connected to pin 1 (+) of J2. The cathode of the LED should be connected to pin 5 (-) of J2. ...

Page 16

... LED turns RED. 2.3.1.4 STATUS AND FAULT INDICATION The MCP1631HV Digitally Programmable Current Source Reference Design has a dual color (red/green) LED to indicate the status and faults. Table 2-1 shows the status of the LEDs during various states of operating modes load, overvoltage, or overtemperature fault condition occurs during operation, the fault condition will be indicated by a flashing RED LED ...

Page 17

... How to Connect and Charge a Battery with the MCP1631HV Digitally Controlled Programmable Current Source Reference Design To charge a battery pack with the MCP1631HV Digitally Controlled Programmable Current Source Reference Design, the positive connector of the battery should be connected to J2-1 (+). The negative terminal of the battery should be connected to J2-5 (-) ...

Page 18

... Reference Design Operates in Charger Mode Follow the instructions in Section 2.3.1.5.1 “How to Connect and Charge a Battery with the MCP1631HV Digitally Controlled Programmable Current Source Reference Design” to connect a battery pack at the board. In the Standby (OFF) state, the GREEN LED will be lit. Push the S1 button to start the charge profile and turn on the output ...

Page 19

... VIEW THE STATE OF MCP1631HV DIGITALLY CONTROLLED PROGRAMMABLE CURRENT SOURCE REFERENCE DESIGN The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is able to show, using an oscilloscope, the system state. To use this feature, connect the scope probe to test point TP1. Testpoint TP1 is output pin U2-8 of the PIC16F616 microcontroller. There are nine status waveforms listed below. A pulse stream of one to nine 10 µ ...

Page 20

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design NOTES: DS51798A-page 16 © 2009 Microchip Technology Inc. ...

Page 21

... PROGRAMMABLE CURRENT SOURCE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP1631HV Digitally Controlled Programmable Current Source Reference Design: • Board Schematic • Board – Top Solder Pads and Silk-Screen Layers • Board – Top Copper Layer • ...

Page 22

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design A.2 BOARD – SCHEMATIC DS51798A-page © 2009 Microchip Technology Inc. ...

Page 23

... A.3 BOARD – TOP SOLDER PADS AND SILK-SCREEN LAYERS © 2009 Microchip Technology Inc. Schematic and Layouts DS51798A-page 19 ...

Page 24

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design A.4 BOARD – TOP COPPER LAYER DS51798A-page 20 © 2009 Microchip Technology Inc. ...

Page 25

... A.5 BOARD – BOTTOM COPPER LAYER © 2009 Microchip Technology Inc. Schematic and Layouts DS51798A-page 21 ...

Page 26

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design NOTES: DS51798A-page 22 © 2009 Microchip Technology Inc. ...

Page 27

... MCP1631HV DIGITALLY CONTROLLED PROGRAMMABLE CURRENT SOURCE Appendix B. Bill Of Materials (BOM) TABLE B-1: BILL OF MATERIALS Qty Reference 3 C1, C2, C4 CAP CERAMIC 10UF 25V X5R 1206 1 C10, C12 CAP 1500PF 50V CERM CHIP 0805 1 C3 CAP CER 2.2UF 25V X7R 0805 1 C5 CAP .1UF 16V CERAMIC X7R ...

Page 28

... MCP1631HV Digitally Controlled Programmable Current Source Reference Design TABLE B-1: BILL OF MATERIALS (CONTINUED) Qty Reference Description 1 R21 RES 3.92K OHM 1/8W 1% 0805 SMD 1 R24 RES 0.0 OHM 1/8W 5% 0805 SMD Panasonic - ECG 1 R4 RES 39.2K OHM 1/8W 1% 0805 SMD 2 R6, R7 RES 1.00K OHM 1/8W 1% 0805 ...

Page 29

... MCP1631HV DIGITALLY CONTROLLED PROGRAMMABLE CURRENT SOURCE Appendix C. Demo Board Firmware C.1 SUMMARY DEVICE FIRMWARE FLOWCHART - LED DRIVER For the latest version of the MCP1631HV Digitally Controlled Programmable Current Source Reference Design LED Driver firmware, visit our web site at www.microchip.com. Shutdown No OVP time retries > ...

Page 30

... C.2 SUMMARY DEVICE FIRMWARE FLOWCHART - LI-ION CHARGER For the latest version of the MCP1631HV Digitally Controlled Programmable Current Source Reference Design Li-Ion Charger firmware, visit our web site at www.microchip.com. Yes S1 pressed No Calibrate LiIon() No Charge Timer Yes Shutdown FIGURE C-2: © 2009 Microchip Technology Inc. ...

Page 31

... C.3 SUMMARY DEVICE FIRMWARE FLOWCHART - NIMH/NICD CHARGER For the latest version of the MCP1631HV Digitally Controlled Programmable Current Source Reference Design NiMH/NiCd Charger firmware, visit our web site at www.microchip.com. Shutdown OVP No time retries > 5 Yes Fault No Cell Temp > 40°C? Yes OTP time retries > ...

Page 32

... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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