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MIC23656 Internal Registers

 2018 Microchip Technology Inc.

DS50002815A-page 33

bit 0

EN_CON:

 Enable Control

0

 = Off

1

 = On

REGISTER C-1:

CTRL1 – CONTROL REGISTER (ADDRESS 0X00) (CONTINUED)

REGISTER C-2:

CTRL2 – OUTPUT CONTROL REGISTER (ADDRESS 0X01)

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DIS_100PCT

FPWM

OT_LATCH

PULLDN

SLEW_RATE

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

RC = Read-then-clear bit

bit 7

DIS_100PCT: 

Disable 100% Duty Cycle

0

 = 100% DC

1

 = Disable 100% DC

bit 6

FPWM: 

Force PWM

0

 = HLL

1

 = FPWM

bit 5

OT_LATCH: 

Overtemperature Latch

0

 = Latch Off Immediately

1

 = Latch Off after 4 OT Cycles

bit 4

PULLDN: 

Enable/Disable Regulator Pull-Down When Power Down

0

 = No Pull Down

1

 = Pull Down

bit 3-0

SLEW_RATE<3:0>:

 Step Slew-Rate Time in µs/V

0000

 = 200

0001

 = 400

0010

 = 600

0011

 = 800

0100

 = 1000

0101

 = 1200

0110

 = 1400

0111

 = 1600

1000

 = 1800

1001

 = 2000

1010

 = 2200

1011

 = 2400

1100

 = 2600

1101

 = 2800

1110

 = 3000

1111

 = 3200

Summary of Contents for MIC23656

Page 1: ...2018 Microchip Technology Inc DS50002815A MIC23656 Evaluation Board User s Guide...

Page 2: ...p 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 and Indi...

Page 3: ...nstallation and Operation 2 1 Introduction 9 2 2 Features 10 2 3 Getting Started 10 Chapter 3 GUI Installation and Operation 3 1 Getting Started 15 3 2 Graphical User Interface Installation 15 3 3 I2C...

Page 4: ...ion Describes the items in the Graphical User Interface Appendix A Schematic and Layouts Shows the schematic and layout diagrams for the MIC23656 Appendix B Bill of Materials BOM Lists the parts used...

Page 5: ...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 Text in angle brackets A key on...

Page 6: ...latest software releases and archived software General Technical Support Frequently Asked Questions FAQs technical support requests online discussion groups Microchip consultant program member listing...

Page 7: ...ft start slope high side current limit HLL or Forced PWM mode of operation The 2 4V to 5 5V input voltage range low shut down and quiescent currents make the MIC23656 ideal for single cell Li Ion bat...

Page 8: ...roduct This board demonstrates the MIC23656 in a buck converter application supplied from an external voltage source 2 4V 5 5V with I2C programmed regulated output The I2C Monitor GUI allows comprehen...

Page 9: ...loading up to 6A control and monitor through the USB interface via I2C Monitor GUI Pin headers are also fitted for Bode Analysis and external I2C communication FIGURE 2 1 MIC23656 Step Down Regulator...

Page 10: ...up prior to any I2 C write operation The differences among the various product options are described in the MIC23656 data sheet The Evaluation Board carries the HAYFT option whose default output volta...

Page 11: ...et the input voltage and the load to the desired values with a maximum of 5 5V on the input voltage and a maximum load of 6A 6 Adjust the regulator output and monitor the STATUS registers as described...

Page 12: ...n Board provides injection points and a termination resistor R4 for AC loop gain measurements If needed the value of R4 can be changed to optimize the injection signal level Inject the oscillator at J...

Page 13: ...placing the EN jumper on the J6 header SDN position or applying a Logic 0 voltage on the EN test point Program it via I2 C interface to the desired output voltage and then start it by plac ing the EN...

Page 14: ...I emission 2 3 1 10 BENCH TESTING AT HIGH CURRENTS When testing the MIC23656 device at high load currents or when checking the over current protection behavior it may be necessary to remove the series...

Page 15: ...rom www microsoft com and follow the installation instructions 2 If Adobe Acrobat Reader is already installed go to Step 3 If not download Adobe Acrobat Reader from http get adobe com reader and follo...

Page 16: ...ield Wizard for I2CMonitor window click the Next button to start the installation FIGURE 3 1 Starting the I2 C Monitor Graphical User Interface Installation 7 The installation path can be changed alth...

Page 17: ...DS50002815A page 17 8 In the Ready to Install the Program window click the Install button and wait for the application to proceed with the installation The progress can be observed in the Status bar F...

Page 18: ...op icon or browse to Windows Start All Programs Microchip I2C Monitor FIGURE 3 4 The Installation Complete Window 3 3 I2 C MONITOR GRAPHICAL USER INTERFACE UNINSTALL In order to install a new version...

Page 19: ...onitor Graphical User Interface Main Window MIC23656 View NOTICE This chapter provides information regarding the use of the GUI only in the case of the MIC23656 device For other devices using the I2 C...

Page 20: ...e registers of the currently selected device to a file that can then be loaded into the GUI by using the Load registers from file button The saved file can also be edited open it with a text editor FI...

Page 21: ...r used to connect the board ScanAddr This button is used to scan for a valid address Connect Disconnect These buttons are used to connect disconnect the current selected device Voltage This drop down...

Page 22: ...15A page 22 4 2 6 MIC23656 I2C Programmable Features The MIC23656 I2 C Programmable Features area contains the items in Table 4 3 FIGURE 4 6 MIC23656 I2 C Programmable Features Area Low Range FIGURE 4...

Page 23: ...is check box activates automatic output pull down resistor when the MIC23656 is disabled Latch off after 4 OverTemp Cycles This check box sets the latch off after four overtemperature thermal shutdown...

Page 24: ...ITEMS Panel Items Description Status Power Good This box is checked if the output voltage reaches 91 of its set value Latched Off This box is checked if the regulator output is latched off due to four...

Page 25: ...gy Inc DS50002815A page 25 TABLE 4 6 STATUS LABELS Status Label Description STATUS Connected This message is shown when the GUI connects to a device STATUS Disconnected This message is shown when the...

Page 26: ...y Inc DS50002815A page 26 Appendix A Schematic and Layouts A 1 INTRODUCTION This appendix contains the following schematic and layouts for the MIC23656 Evaluation Board Board Schematic Board Top Silk...

Page 27: ...IN 6 SCL 7 SDA 8 EN 9 PG 10 VOUT 11 AGND 12 PGND SW 16 SW PGND PVIN PVIN SVIN SCL SDA EN PG VOUT AGND PGND SW 0 U1 PWR Net Tie 0 5mm NT1 AGND GND AGND AGND AGND D D GND GND GND 0R R8 0R R11 SCL SDA EN...

Page 28: ...Schematic and Layouts 2018 Microchip Technology Inc DS50002815A page 28 A 3 BOARD TOP SILK A 4 BOARD TOP COPPER AND SILK...

Page 29: ...Schematic and Layouts 2018 Microchip Technology Inc DS50002815A page 29 A 5 BOARD TOP COPPER A 6 BOARD BOTTOM COPPER...

Page 30: ...C 4 J1 J3 J12 J13 Connector Header 2 54 Male 1x2 Gold 5 84 MH TH Vertical FCI 77311 118 02LF 1 J2 Connector Header 2 54 Male 1x4 Tin 5 84 MH TH Vertical FCI 68002 404HLF 4 J4 J5 J15 J19 Connector TP P...

Page 31: ...SMD 0603 Panasonic ECG ERJ 3GSY0R00V 1 R12 Resistor TKF 10R 1 1 10W SMD 0603 Panasonic ECG ERJ 3EKF10R0V 1 U1 Microchip Analog Switcher Buck 2 4V to 5 5V MIC23656 HAYFT FTQFN 16 Microchip Technology I...

Page 32: ...FAULT Register FAULT OT_WARN EN_STAT BOOT_ERR SSD HICCUP OT LATCH_OFF PG REGISTER C 1 CTRL1 CONTROL REGISTER ADDRESS 0X00 R W 0 R W 0 R W 0 R W 0 R W 0 R W 0 R W 0 R W 0 TON ILIM EN_DELAY EN_INT EN_CO...

Page 33: ...bit read as 0 n Value at POR 1 Bit is set 0 Bit is cleared x Bit is unknown RC Read then clear bit bit 7 DIS_100PCT Disable 100 Duty Cycle 0 100 DC 1 Disable 100 DC bit 6 FPWM Force PWM 0 HLL 1 FPWM...

Page 34: ...xAA 0 855V 0xCA 1 015V 0xEA 1 175V 0x8B 0 7V 0xAB 0 86V 0xCB 1 02V 0xEB 1 18V 0x8C 0 705V 0xAC 0 865V 0xCC 1 025V 0xEC 1 185V 0x8D 0 71V 0xAD 0 87V 0xCD 1 03V 0xED 1 19V 0x8E 0 715V 0xAE 0 875V 0xCE 1...

Page 35: ...1 1V 0x8D 1 56V 0xAD 2 2V 0xCD 2 84V 0xED 3 48V 0x4E 0 79V 0x6E 1 11V 0x8E 1 58V 0xAE 2 22V 0xCE 2 86V 0xEE 3 5V 0x4F 0 8V 0x6F 1 12V 0x8F 1 6V 0xAF 2 24V 0xCF 2 88V 0xEF 3 52V 0x50 0 81V 0x70 1 13V 0...

Page 36: ...Bit is set 0 Bit is cleared x Bit is unknown RC Read then clear bit bit 7 OT_WARN Overtemperature Warning 0 No Fault 1 Fault bit 6 EN_STAT Buck ON OFF Control 0 OFF 1 ON bit 5 BOOT_ERR Boot Up Error 0...

Page 37: ...00 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 Pune Tel 91...

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