ZHCSIH9F March 2009 – July 2018 TPS65023-Q1
PRODUCTION DATA.
Setting bit 3 in register CON-CTRL to 1 enables the low-ripple mode for all of the DC-DC converters if operated in PFM mode. For an output current less than approximately 10 mA, the output-voltage ripple in PFM mode is reduced, depending on the actual load current. The lower the actual output current on the converter, the lower the output ripple voltage. For an output current above 10 mA, there is only a minor difference in output-voltage ripple between PFM mode and low-ripple PFM mode. As this feature also increases switching frequency, it is used to keep the switching frequency above the audible range in PFM mode down to a low output current.