AN2517 Freescale Semiconductor / Motorola, AN2517 Datasheet - Page 2

• Manufacturer Part Number: AN2517
• Description: 3-Phase Sine Wave Generator with Dead-Time Correction TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

AN2517/D
2
Phase A - top
Phase A - bottom
Phase B - top
Phase B - bottom
Phase C - top
Phase C - bottom
Synchronization signal
Resolver reference signal
Fault (input signal)
3-Phase Sine Wave Generator with Dead-Time Correction TPU Function Set (3SinDt) MOTOROLA
Figure 2. Signals generated by 3SinDt TPU function set
The function set consists of 5 TPU functions:
The 3SinDt_top and 3SinDt_bottom TPU functions work together to generate
a 6-channel 3-phase center-aligned PWM signal with dead-time between the
top and bottom channels. The Synchronization Signal for the 3SinDt function
can be used to generate one or more adjustable signals for a wide range of
uses, that are synchronized to the PWM, and track changes in the PWM period.
The Resolver Reference Signal for the 3SinDt function can be used to generate
one or more 50% duty-cycle adjustable signals that are also synchronized to
the PWM.The Fault Input for the 3SinDt function is a TPU input function that
sets all PWM outputs low when the input signal goes low. See
•
•
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
3-Phase Sine Wave Generator with Dead-Time Correction – Top
(3SinDt_top)
3-Phase Sine Wave Generator with Dead-Time Correction – Bottom
(3SinDt_bottom)
Synchronization Signal for 3-Phase Sine Wave Generator with Dead-
Time Correction (3SinDt_sync)
Resolver Reference Signal for 3-Phase Sine Wave Generator with
Dead-Time Correction (3SinDt_res)
Fault Input for 3-Phase Sine Wave Generator with Dead-Time
Correction (3SinDt_fault)
Go to: www.freescale.com
FAULT
INITIALIZATION
New
1.6 ms
Figure
2.