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High-Speed PWM

Section 14. High-Speed PWM

HIGHLIGHTS

This section of the manual contains the following major topics:

14.1 Introduction .................................................................................................................. 14-2

14.2 Features....................................................................................................................... 14-2

14.3 Control Registers ......................................................................................................... 14-3

14.4 Architecture Overview................................................................................................ 14-24

14.5 Module Description .................................................................................................... 14-27

14.6 PWM Operating Modes.............................................................................................. 14-33

14.7 PWM Generator......................................................................................................... 14-71

14.8 PWM Trigger.............................................................................................................. 14-87

14.9 PWM Interrupts.......................................................................................................... 14-98

14.10 PWM Fault Pins ......................................................................................................... 14-99

14.11 Special Features ...................................................................................................... 14-105

14.12 PWM Output Pin Control...........................................................................................14-111

14.13 Immediate Update of PWM Duty Cycle ................................................................... 14-113

14.14 Power-Saving Modes............................................................................................... 14-114

14.15 External Control of Individual Time Base(s)............................................................. 14-114

14.16 Application Information ............................................................................................ 14-115

14.17 Register Map............................................................................................................ 14-126

14.18 Related Application Notes........................................................................................ 14-127

14.19 Revision History ....................................................................................................... 14-128

dsPIC33E/PIC24E Family Reference Manual

14.1 INTRODUCTION

This section describes the High-Speed Pulse-Width Modulator (PWM) module and its

associated operational modes. The High-Speed PWM module in the dsPIC33E/PIC24E

device family supports a wide variety of PWM modes and is ideal for power

conversion/motor control applications. Some of the common applications include:

• AC-to-DC converters

• DC-to-DC converters

• AC and DC motors: BLDC, PMSM, ACIM, SRM, etc.

• Inverters

• Battery chargers

• Digital lighting

• Uninterrupted Power Supply (UPS)

• Power Factor Correction (PFC) (e.g., Interleaved PFC and Bridgeless PFC)

14.2 FEATURES

The High-Speed PWM module consists of the following major features:

• Up to seven PWM generators, each with an individual time base

• Two PWM outputs per PWM generator

• Individual period and duty cycle for each PWM output

• Duty cycle, dead time, phase shift and frequency resolution equal to the system clock

source (TOSC)

• Independent fault and current-limit inputs for up to 14 PWM outputs

• Redundant Output mode

• Independent Output mode (this feature is not available on all devices)

• Push-Pull Output mode

• Complementary Output mode

• Center-Aligned PWM mode

• Output override control

• Special Event Trigger

• PWM capture feature

• Prescaler for input clock

• ADC triggering with PWM

• Independent PWM frequency, duty cycle and phase shift changes

• Leading-Edge Blanking (LEB) functionality

• Dead time compensation

• Output clock chopping

Note: This family reference manual section is meant to serve as a complement to device

data sheets. Depending on the device variant, this manual section may not apply to

all dsPIC33E/PIC24E devices.

Please consult the note at the beginning of the “High-Speed PWM” chapter in the

current device data sheet to check whether this document supports the device you

are using.

Device data sheets and family reference manual sections are available for

download from the Microchip Worldwide Web site at: http://www.microchip.com

Section 14. High-Speed PWM

High-Speed PWM

14.3 CONTROL REGISTERS

The following registers control the operation of the High-Speed PWM module:

•PTCON: PWM Time Base Control Register

- Enables or disables the High-Speed PWM module

- Sets the Special Event Trigger for the ADC

- Enables or disables immediate period updates

- Selects the synchronizing source for the master time base

- Specifies synchronization settings

•PTCON2: PWM Clock Divider Select Register 2

Provides the clock prescaler to the PWM master time base

•PTPER: Primary Master Time Base Period Register

Provides the PWM time period value

•STCON: PWM Secondary Master Time Base Control Registe (1)

- Enables or disables immediate period updates based on the secondary master time base

- Selects the synchronization source for the secondary master time base

- Specifies the synchronization setting for secondary master time base control

• STCON2: PWM Secondary Clock Divider Select Register 2(1)

Provides the clock prescaler to the PWM secondary master time base

•STPER: Secondary Master Time Base Period Register(1)

Provides the secondary master time base period value

•MDC: PWM Master Duty Cycle Register

Provides the PWM master duty cycle value

•SEVTCMP: PWM Special Event Compare Register

Provides the compare value that is used to trigger the ADC module

•SSEVTCMP: PWM Secondary Special Event Compare Register(1)

Provides the compare value that is used to trigger the ADC module based on the

secondary master time base

•CHOP: PWM Chop Clock Generator Register

- Provides the chop clock frequency

- Enables or disables the chop clock generator

•PWMKEY: PWM Unlock Register(1)

Writes the unlock sequence to allow writes to the IOCONx and FCLCONx registers

•PWMCONx: PWM Control Register

- Enables or disables fault interrupt, current-limit interrupt and primary trigger interrupt

- Provides the interrupt status for fault interrupt, current-limit interrupt and primary trigger

interrupt

- Selects the type of time base (master time base or independent time base)

- Selects the type of duty cycle (master duty cycle or independent duty cycle)

- Controls Dead Time mode

- Enables or disables Center-Aligned mode

- Controls the external PWM Reset operation

- Enables or disables immediate updates of the duty cycle, phase offset, independent time

base period

•IOCONx: PWM I/O Control Register

- Enables or disables PWM pin control feature (PWM control or GPIO)

- Controls fault/current limit override values

- Enables PWMxH and PWMxL pin swapping

- Controls the PWMxH and PWMxL output polarity

- Controls the PWMxH and PWMxL output if any of the following modes is selected:

• Complementary mode

• Push-Pull mode

• True Independent mode

Note: Not all registers are available on all devices. Refer to the “High-Speed PWM”

chapter in the specific device data sheet for availability.

Produktspecifikationer

Varumärke:	Microchip
Kategori:	Inte kategoriserad
Modell:	dsPIC33EP256GM706
Färg på produkten:	Zwart
Vikt:	3000 g
Bredd:	428 mm
Djup:	305 mm
Höjd:	22.9 mm
Användarmanual:	Ja
Husmaterial:	Aluminium
Blåtand:	Ja
Skärm diagonal:	17.3 "
Upplösning:	1920 x 1080 Pixels
Pekskärm:	Nee
Original bildförhållande:	16:9
Processorfrekvens:	2.7 GHz
Processorfamilj:	Intel® Core™ i7
Processormodel:	i7-5850HQ
Antal processorkärnor:	4
Wi-Fi-standarder:	Wi-Fi 5 (802.11ac)
Bluetooth-version:	4.0
Vormfaktor:	Clamshell
Inkluderar operativsystem:	Windows 8.1
Ethernet LAN:	Ja
Integrerad minneskortläsare:	Ja
Kompatibla minneskort:	SD, SDHC, SDXC
Processor litografi:	14 nm
Snabbstartsguide:	Ja
Garantikort:	Ja
Inkluderar AC-adapter:	Ja
Marknadspositionering:	Gamen
LED-bakgrundsbelysning:	Ja
Antal USB 2.0-portar:	2
VGA (D-Sub) port(ar):	1
Antal HDMI-portar:	1
Mikrofon, linjeingång:	Ja
DVI-port:	Nee
Antal Ethernet LAN (RJ-45)-portar:	1
Monteringsalternativ för kabellås:	Ja
Kabellåsspårtyp:	Kensington
Antal inbyggda högtalare:	2
Hörlursutgångar:	1
AC-adapter, ström:	200 W
HD typ:	Full HD
Inbyggd mikrofon:	Ja
Internminne:	16 GB
Förvarings media:	HDD+SSD
Batteritid/batteritid:	- uur
Internminnestyp:	DDR3L-SDRAM
Inbyggd subwoofer:	Ja
Intel® Wireless Display (Intel® WiDi):	Ja
Typ av panel:	IPS
Antal portar USB 3.2 Gen 1 (3.1 Gen 1) Typ A:	3
Processoruttag:	BGA 1364
Stepping:	G0
Systembuss:	5 GT/s
Processor antal trådar:	8
PCI Express-kortplatsversion:	3.0
Processorns driftlägen:	64-bit
Processorns cache:	6 MB
Tjunction:	105 °C
Busstyp:	DMI2
PCI Express-konfigurationer:	2x4, 1x8, 2x8, 1x16
Thermal Design Power (TDP):	47 W
Kodnamnsprocessor:	Broadwell
Maximalt antal PCI Express-linjer:	16
Typ av processorcache:	L3
ECC stöds av processor:	Nee
Processorfabrikant:	Intel
Operativsystems arkitektur:	64-bit
Maximalt internminne:	32 GB
Total lagringskapacitet:	1512 GB
Typ av optisk enhet:	Nee
Inbyggd grafikadapter:	Ja
Separat grafikadapter:	Ja
Familjens inbyggda grafikadapter:	Intel® Iris™ Pro Graphics
Inbyggd grafikadaptermodell:	Intel® Iris™ Pro Graphics 6200
Grundläggande frekvens inbyggd grafikadapter:	300 MHz
Inbyggd grafikadapter dynamisk frekvens (max):	1100 MHz
Inbyggt grafikkort-ID:	0x1622
Maximalt minne inbyggd grafikadapter:	32 GB
Inbyggd grafikadapter DirectX-version:	11.2
Inbyggd grafikadapter OpenGL version:	4.3
Fram kamera:	Ja
Numerisk knappsats:	Ja
Instruktionsuppsättningar som stöds:	SSE4.1, AVX 2.0, SSE4.2
Intel® My WiFi Technology (Intel® MWT):	Nee
Intel® Smart Response Technology:	Ja
Intel® Hyper Threading Technology (Intel® HT Technology):	Ja
Intel® Turbo Boost-teknik:	2.0
Intel® Quick Sync-videoteknik:	Ja
Intel® InTru™ 3D-teknik:	Ja
Intel® Clear Video HD-teknik (Intel® CVT HD):	Ja
Intel® Insider™:	Ja
Intel® Flex Memory Access:	Ja
Intel® AES nya instruktioner (Intel® AES-NI):	Ja
Förbättrad Intel SpeedStep-teknik:	Ja
Kör Disable Bit:	Ja
Idle stater:	Ja
Termisk övervakningsteknik:	Ja
CPU-konfiguration (max):	1
Intel® Enhanced Halt State:	Ja
Intel® Clear Video Technology för mobila internetenheter (Intel® CVT för MID):	Ja
Intel® VT-x med utökade sidtabeller (EPT):	Nee
Inbyggda alternativ tillgängliga:	Nee
Grafik & IMC litografi:	14 nm
Intel® Small Business Advantage (Intel® SBA):	Ja
Intel® Secure Key:	Ja
Intel® 64:	Ja
Intel® OS Guard:	Ja
Intel® Virtualization Technology for Directed I/O (VT-d):	Nee
Intel® Clear Video-teknik:	Ja
Intel® Virtualization Technology (VT-x):	Ja
Processorpaketstorlek:	37.5 x 32 x 1.8 mm
Konfliktfri processor:	Ja
Intel® Identity Protection Technology (Intel® IPT):	Ja
Versie Intel® Identity Protection Technology:	1.00
Versie Intel® Secure Key Technology:	1.00
Versie Intel® Smart Response Technology:	1.00
ARK ID-processor:	87719
Intel® Trusted Execution Technology:	Nee
Intel® TSX:	Nee
Intel® Stable Image Platform Program (SIPP):	Nee
Versie Intel® Stable Image Platform Program (SIPP):	0.00
Intel® TSX-NI-version:	0.00
Intel® Anti-Theft Technology (Intel® AT):	Nee
Anslutning till basstation:	Nee
SmartCard-kortplats:	Nee
Maximal processorturbofrekvens:	3.6 GHz
Processorkod:	SR2BH
Diskret grafikadaptermodell:	NVIDIA® GeForce® GTX 970M
Antal installerade SSD:er:	2
SSD-kapacitet:	256 GB
Pekdon:	Touchpad
Klockhastighetsminne:	1866 MHz
Minneslayout:	2 x 8 GB
Minnesplatser:	4x SO-DIMM
SSD-gränssnitt:	mSATA
Chipset moderkort:	Intel HM97
Specifik grafikminnestyp:	GDDR5
Grafikminne:	3 GB
Antalet installerade hårddiskar:	1
HDD kapacitet:	1000 GB
HDD rotationshastighet:	7200 RPM
Bakgrundsbelyst tangentbord:	Ja
Antal Mini DisplayPort:	1
FSB-paritet:	Nee
Bussprocessor på framsidan:	- MHz
Intel® efterfrågebaserad växling:	Nee
Typ av laddningsport:	DC-in ingang
Medföljande drivrutiner:	Ja
Typ CardBus PCMCIA-slot:	Nee
Processorserie:	Intel Core i7-5800 Mobile Series
ExpressCard-kortplats:	Nee
S/PDIF-utgång:	Ja
Intel® Dual Display Capable Technology:	Nee
Intel® FDI-teknik:	Ja
Intel® Rapid Storage Technology:	Nee
Intel® Fast Memory Access:	Ja
Intel® Smart Cache:	Ja
Intel® Small Business Advantage (SBA)-version:	1.00
HDD storlek:	2.5 "
Power högtalare:	2 W
Grafikkort, stöd för Open GL:	Ja
Intel® HD-grafik:	Nee
Intel® Inbyggd Visuals-teknik:	Ja
Intel® Virtualization Technology (Intel® VT):	VT-x
LightScribe:	Nee
Wifi:	Ja
Typ produkt:	Laptop
Batteriteknik:	Lithium-Polymeer (LiPo)
Processorgenerering:	Vijfde generatie Intel® Core™ i7
Batterijcapaciteit:	73.26 Wh