JAJSP69 November 2023 TPSM828510 , TPSM828511 , TPSM828512
PRODUCTION DATA
The TPSM82851x can be synchronized by applying a clock on the MODE/SYNC pin. There is no need for any additional circuitry. See Figure 9-30. The clock can be applied, changed, and removed during operation. TI recommends the value of the RCF resistor to be chosen such that the internally defined frequency and the externally-applied frequency are close to each other to have a fast settling time to the external clock. Synchronizing to a clock is not possible, if the COMP/FSET pin is connected to Vin or GND. Figure 9-31 and Figure 9-32 show the external clock being applied and removed. When an external clock is applied, the device operates in PWM mode.
VIN = 5 V | RCF = 8.06 kΩ | IOUT = 0.1 A |
VOUT = 1.8 V | fEXT = 2.5 MHz | |
VIN = 5 V | RCF = 8.06 kΩ | IOUT = 1 A |
VOUT = 1.8 V | fEXT = 2.5 MHz | |