15-30. Up-Down-Count, Dual Edge Symmetric Waveform, With Independent Modulation on EPWMxA and
EPWMxB — Active Low
...............................................................................................
15-31. Up-Down-Count, Dual Edge Symmetric Waveform, With Independent Modulation on EPWMxA and
EPWMxB — Complementary
.........................................................................................
15-32. Up-Down-Count, Dual Edge Asymmetric Waveform, With Independent Modulation on EPWMxA—Active
Low
.......................................................................................................................
15-33. Dead-Band Generator Submodule
...................................................................................
15-34. Configuration Options for the Dead-Band Generator Submodule
...............................................
15-35. Dead-Band Waveforms for Typical Cases (0% < Duty < 100%)
.................................................
15-36. PWM-Chopper Submodule
............................................................................................
15-37. PWM-Chopper Submodule Signals and Registers
................................................................
15-38. Simple PWM-Chopper Submodule Waveforms Showing Chopping Action Only
..............................
15-39. PWM-Chopper Submodule Waveforms Showing the First Pulse and Subsequent Sustaining Pulses
.....
15-40. PWM-Chopper Submodule Waveforms Showing the Pulse Width (Duty Cycle) Control of Sustaining
Pulses
....................................................................................................................
15-41. Trip-Zone Submodule
..................................................................................................
15-42. Trip-Zone Submodule Mode Control Logic
.........................................................................
15-43. Trip-Zone Submodule Interrupt Logic
................................................................................
15-44. Event-Trigger Submodule
.............................................................................................
15-45. Event-Trigger Submodule Inter-Connectivity to Interrupt Controller
.............................................
15-46. Event-Trigger Submodule Showing Event Inputs and Prescaled Outputs
......................................
15-47. Event-Trigger Interrupt Generator
....................................................................................
15-48. HRPWM System Interface
............................................................................................
15-49. Resolution Calculations for Conventionally Generated PWM
....................................................
15-50. Operating Logic Using MEP
..........................................................................................
15-51. Required PWM Waveform for a Requested Duty = 40.5%
.......................................................
15-52. Low % Duty Cycle Range Limitation Example When PWM Frequency = 1 MHz
..............................
15-53. High % Duty Cycle Range Limitation Example when PWM Frequency = 1 MHz
..............................
15-54. Simplified ePWM Module
..............................................................................................
15-55. EPWM1 Configured as a Typical Master, EPWM2 Configured as a Slave
....................................
15-56. Control of Four Buck Stages. Here F
PWM1
≠
F
PWM2
≠
F
PWM3
≠
F
PWM4
.................................................
15-57. Buck Waveforms for (Note: Only three bucks shown here)
.......................................................
15-58. Control of Four Buck Stages. (Note: F
PWM2
= N × F
PWM1
)
...........................................................
15-59. Buck Waveforms for (Note: F
PWM2
= F
PWM1)
)
..........................................................................
15-60. Control of Two Half-H Bridge Stages (F
PWM2
= N × F
PWM1
)
.........................................................
15-61. Half-H Bridge Waveforms for (Note: Here F
PWM2
= F
PWM1
)
.........................................................
15-62. Control of Dual 3-Phase Inverter Stages as Is Commonly Used in Motor Control
............................
15-63. 3-Phase Inverter Waveforms for (Only One Inverter Shown)
....................................................
15-64. Configuring Two PWM Modules for Phase Control
................................................................
15-65. Timing Waveforms Associated With Phase Control Between 2 Modules
.......................................
15-66. Control of a 3-Phase Interleaved DC/DC Converter
...............................................................
15-67. 3-Phase Interleaved DC/DC Converter Waveforms for
...........................................................
15-68. Controlling a Full-H Bridge Stage (F
PWM2
= F
PWM1)
..................................................................
15-69. ZVS Full-H Bridge Waveforms
........................................................................................
15-70. Time-Base Control Register (TBCTL)
...............................................................................
15-71. Time-Base Status Register (TBSTS)
................................................................................
15-72. Time-Base Phase Register (TBPHS)
................................................................................
15-73. Time-Base Counter Register (TBCNT)
..............................................................................
15-74. Time-Base Period Register (TBPRD)
................................................................................
15-75. Counter-Compare Control Register (CMPCTL)
....................................................................
37
SPRUH73H – October 2011 – Revised April 2013
List of Figures
Copyright © 2011–2013, Texas Instruments Incorporated