ZHCSLA4E May 2020 – October 2024 TPS61378-Q1
PRODUCTION DATA
The TPS61378-Q1 uses a triangle waveform to spread the switching frequency with ±10% of normal frequency. The frequency of the triangle waveform is typically 0.4% of the switching frequency. For example, if the normal switching frequency of the TPS61378-Q1 is programmed to 2.2MHz, the spread spectrum function modulates the switching frequency in the range of 1.98MHz to 2.42MHz in a triangle behavior with an 8.8kHz rate.
The spread spectrum is only available while the clock of the TPS61378-Q1 is free running at its natural frequency in FPWM mode. Any of the following conditions overrides spread spectrum, turning it off: