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Schematics

 2018 

Micr

ochip T

e

ch

nol
ogy
 Inc.

A

d

va
nce Inf

o

rm

at

ion

DS
50002762A

-page 23

FIGURE A-2:

dsPIC33CH CURIOSITY BOARD LAYOUT SCHEMATIC REV. 1.0 (SHEET TWO OF FOUR)

Designed with

Altium.com

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20
22

21
23

24

25

26

27

28

29

30

31

32

33

34

35

36

HDR-2.54 Female 2x18

J11

3V3

I/O Pin Access Headers

16V

1 μF

0603

C30

Isolated USB-UART Interface

100k

R76

ID

4

V

BUS

1

GND

5

D-

2

D+

3

0

USB micro-B TH/SMT

J 16

U9D_P

U9D_N

U9D_P

U9D_N

V

DD

1

GP0

2

GP1

3

RST

4

UART RX

5

UART TX

6

GP2

7

GP3

8

SDA

9

SCL

10

V

USB

11

D-

12

D+

13

V

SS

14

MCP2221A

U9

U9_V DD

U9_V DD

16V

1 μF

0603

C31

U9_G ND

U9_G ND

U9_G ND

U9_G ND

U9_V DD

U9_G ND

U9_G ND

3V3

1k

0603

1%

R75

RC10_RXB

RC11_TXB

460.8 kB aud max

DNP

2

3

1

J17

If installing  J17,  

us e  

regulated  

5V  

(5.5V  max)  

isolated  wall cube with center pin positive.   
Also  recommended to cut  NT2 and populate

 

D1  to prevent V

BUS

 

backdrive current.

VBUS5

0.1 μF
25V

C33

0.1 μF
25V 0603

C29

0.1 μF
25V 0603

C32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20
22

21
23

24

25

26

27

28

29

30

31

32

33

34

35

36

HDR-2.54 Female 2x18

J12

1

2

3

4

5

6

7

8

9

10

HDR-2.54 Female 2x5

J18

3V3

Power Status (Green)

LED5

5V

Power Supply

470R

0603

1%

R18

2.2 μF

10V

0603

C23

2.2 μF

10V

0603

C39

V

OUT

1

V

OUT

2

GND 3

EN

4 NC

5 V

IN

6

MIC5528 3V3

U12

DNP

D1

Net Tie

0.5 mm

NT2

5V

DNP

D7

Net Tie

0.5 mm

NT3

V

DD1

1

A1

2

A2

3

GND1

4

GND2

5

B2

6

B1

7

V

DD2

8

SI8422AB -D-IS

U11

V

OUT

5V

RA2_TRANSIENTFB

RA3_ISENSEH

3V3

RE4

RA4_S1MCLR3

RE5

RE3

RA1_VINSENSE

RE2

RA0_POT

RC2

RC3_MOSIA

RC4_PWMB

RC6_RSTB

RC7_ANA

RC8_SCKB

RC9_MISOB

RC10_RXB

RC11_TXB

RC14_S1PWM7H

RC15_S1PWM7L

RC5_S1PWM2L

RC13_TRANSIENT

RC0_PWMDACFB

RC12

RB0_OSCI

RB2_ANB

RB3_PGD2

RB4_PGC2

RB5_S1PGD3

RB6_S1PGC3

RB7_CSB

RB8_SCLB

RB9_SDAB

RB13_INTB

RB15_PWMA

RB14_RGB_BLUE

RB1_IBIAS2

RB10_SCKA

RB11

RB12

RE0_LED1

RE1_LED2

RE8_S2

RE9_S3

RE7_S1

RE6

RE10

RE11

RE12_SCLA

RE13_SDAA

RE14

RE15

RD0_RXA

RD1_TXA

RD2_INTA

RD3_CSA

RD4_RSTA

RD6_MISOA

RD8_MOSIB

RD5_RGB_RED

RD7_RGB_GREEN

RD14_ISENSEL

RD10

RD12_S1PGA2P2

RD9

RD11

RD13

RD15

MCLR

U1VDD

RC1_VOUTFB

Is

o

la

tio

n

5V

Summary of Contents for dsPIC33CH

Page 1: ...2018 Microchip Technology Inc Advance Information DS50002762A dsPIC33CH Curiosity Development Board User s Guide...

Page 2: ...crochip received ISO TS 16949 2009 certification for its worldwide headquarters design and wafer fabrication facilities in Chandler and Tempe Arizona Gresham Oregon and design centers in California an...

Page 3: ...he Programmed Demo Firmware 14 2 3 Reprogramming and Debugging the dsPIC33CH128MP508 Device U1 14 2 4 Using the Isolated USB UART Interface 15 2 5 Circuit Details 15 2 5 1 Jumpers Headers Connectors 1...

Page 4: ...dsPIC33CH Curiosity Development Board User s Guide DS50000000A page 4 Advance Information 2018 Microchip Technology Inc NOTES...

Page 5: ...f the noteworthy hardware features of the board Appendix A Schematics This appendix provides schematic diagrams for the dsPIC33CH Curiosity Development Board Appendix B Bill of Materials BOM This appe...

Page 6: ...path File Save Bold characters A dialog button Click OK A tab Click the Power tab N Rnnnn A number in verilog format where N is the total number of digits R is the radix and n is a digit 4 b0010 2 hF1...

Page 7: ...se with 16 bit devices MPLAB X IDE User s Guide DS50002027 This document describes how to set up the MPLAB X IDE software and use it to create projects and program devices dsPIC33CH128MP508 Family Dat...

Page 8: ...elps keep customers current on Microchip products Subscribers will receive e mail notification whenever there are changes updates revisions or errata related to a specified product family or developme...

Page 9: ...FAE Technical Support Customers should contact their distributor representative or field application engineer FAE for support Local sales offices are also available to help customers A listing of sale...

Page 10: ...dsPIC33CH Curiosity Development Board User s Guide DS50002762A page 10 Advance Information 2018 Microchip Technology Inc NOTES...

Page 11: ...nterfaces for hardware expansion compatible with a wide range of existing click boards from MikroElektronika www mikroe com 4 1x Red Green Blue RGB LED 5 2x general purpose red indicator LEDs 6 3x gen...

Page 12: ...62A page 12 Advance Information 2018 Microchip Technology Inc 1 1 SCHEMATICS AND BILL OF MATERIALS BOM Schematics and the BOM for the dsPIC33CH Curiosity Development Board are located in Appendix A Sc...

Page 13: ...ed in the unpopulated footprint J17 If an external wall cube is used it should be well regulated and rated for 5 0V 1 5A with center pin positive Compared to operating from USB power powering the boar...

Page 14: ...nd Slave cores two debugger tools are required During simultaneous dual debug operation the PKOB circuit can be used to debug the Master core while an external programmer debugger tool should be conne...

Page 15: ...00 mil jumper header which may optionally be used to insert a current meter in series with the U1 VDD current path to measure the micro controller current consumption In order to measure the U1 curren...

Page 16: ...rom the rest of the application circuitry and does not supply power to the rest of the board J17 This is an unpopulated footprint that may optionally be used to install a standard DC barrel jack for e...

Page 17: ...R66 and U5 implemented a hardware based output overvoltage protection feature in a manner similar to the hardware overcurrent protection circuit When a conventional boost converter is operated open l...

Page 18: ...nd R87 set the DC gain of the constant current regulation control loop The value of current sense resistor R94 sets the current limit but it is made adjustable by biasing the base of Q9 up or down via...

Page 19: ...ode control algorithm Low side current sensing during the MOSFET off time is possible via the current sense resistors R63 R92 and R93 How ever the voltage developed across the current sense resistors...

Page 20: ...iasing ensures that the current sense voltage signal is always within the U1 comparator input sensing range and the internal DAC reachable range even when the Q6 current is exactly 0 0 mA with realist...

Page 21: ...PMENT BOARD USER S GUIDE 2018 Microchip Technology Inc Advance Information DS50002762A page 21 Appendix A Schematics The schematics for the dsPIC33CH Curiosity Development Board DM330028 are shown in...

Page 22: ...6 1k 0603 1 R4 1k 0603 1 R2 4 7k 0603 1 R99 3V3 RE7_S1 330R R12 330R R13 330R R11 Master and Slave Programming Debug also connects to PKOB circuit output 0 1 F 25V 0603 C6 0 1 F 25V 0603 C7 0 1 F 25V...

Page 23: ...5V 0603 C29 0 1 F 25V 0603 C32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 21 23 24 25 26 27 28 29 30 31 32 33 34 35 36 HDR 2 54 Female 2x18 J12 1 2 3 4 5 6 7 8 9 10 HDR 2 54 Female 2x5 J18...

Page 24: ...High side current sense level shifter Output voltage feedback circuit Buck mode low side off time current sense Note 0 0V to 300 mV signal suggest 8x PGA gain For Buck Mode PWM Q6 Drive Q2 DC OFF For...

Page 25: ...V C18 0 1 F 25V C19 0 1 F 25V 0603 C27 0 1 F 25V 0603 C28 0 1 F 25V 0603 C20 CS 1 SO 2 WP 3 VSS 4 SI 5 SCK 6 HOLD 7 VCC 8 25LC 256 I SN U6 PMD5 CN63 RE5 1 SCL3 PMD6 CN64 RE6 2 SDA3 PMD7 CN65 RE7 3 C1I...

Page 26: ...dsPIC33CH Curiosity Development Board User s Guide DS50002762A page 26 Advance Information 2018 Microchip Technology Inc NOTES...

Page 27: ...46 R48 R49 R50 R51 R64 R65 R82 R88 R89 R102 Resistor TKF 10k 1 1 10W SMD 0603 Panasonic ECG ERJ 3EKF1002V 17 R2 R4 R6 R8 R14 R19 R25 R30 R34 R54 R57 R68 R72 R73 R75 R79 R85 Resistor TKF 1k 1 1 10W SMD...

Page 28: ...hnologies AG BSS308PEH6327XTSA1 1 Q13 MOSFET P CH 20V 4 3A SOT 23 Diodes Incorporated DMP2100U 7 2 Q2 Q8 MOSFET N CH 25V MCP87130T U LC Microchip Technology Inc MCP87130T U LC 4 J3 J8 Connector Header...

Page 29: ...5 Microchip Technology Inc MCP6001T I OT 1 U9 Microchip Interface USB I2C UART MCP2221A I ST TSSOP 14 Microchip Technology Inc MCP2221A I ST 1 U12 MIC5528 3 3 Linear Voltage Regulator IC Positive Fixe...

Page 30: ...7 5980 5300 China Xian Tel 86 29 8833 7252 China Xiamen Tel 86 592 2388138 China Zhuhai Tel 86 756 3210040 ASIA PACIFIC India Bangalore Tel 91 80 3090 4444 India New Delhi Tel 91 11 4160 8631 India Pu...

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