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In Half-Bridge applications where all power switches are modulated at the PWM frequency, the power switches normally require more time to turn off than to turn on.
If both the upper and lower power switches are switched at the same time (one turned on, and the other turned off), both switches may be on for a short period of time until one switch completely turns off if copying microcontroller atmega1280p eeprom.
During this brief interval, a very high current (shoot-through current) will flow through both power switches, shorting the bridge supply. To avoid this potentially destructive shoot-through current from flowing during switching, turning on either of the power switches is normally delayed to allow the other switch to completely turn off.
In Half-Bridge mode, a digitally programmable dead-band delay is available to avoid shoot-through current from destroying the bridge power switches. The delay occurs at the signal transition from the non-active state to the active state after copy ic atmega1280a bin.
The lower seven bits of the associated PWM1CON register (Register 11-3) sets the delay period in terms of microcontroller instruction cycles (TCY or 4 TOSC). In Single Output mode, pulse steering allows any of the PWM pins to be the modulated signal.
Additionally, the same PWM signal can be simultaneously available on multiple pins. Once the Single Output mode is selected (CCP1M<3:2> = 11 and P1M<1:0> = 00 of the CCP1CON register), the user firmware can bring out the same PWM signal to one, two, three or four output pins by setting the appropriate STR<D:A> bits of the PSTRCON register if copying microcontroller atmega48p flash
While the PWM Steering mode is active, CCP1M<1:0> bits of the CCP1CON register select the PWM output polarity for the P1<D:A> pins. The PWM auto-shutdown operation also applies to PWM Steering mode as described in Section 11.4.4 “Enhanced PWM Auto-shutdown mode”. An auto-shutdown event will only affect pins that have PWM outputs enabled.
