Yes, TPS62135 and TPS62136 are newer devices, which are smaller, support higher output currents, are more accurate, support a wider Vout range, and support a forced PWM mode. TPS62136 will be more efficient due to its lower switching frequency.
However…
Part Number: TPS548A28 Hi Team,
The attached TI document describes PWM signal control of the output voltage.
How are R3, Rfilter, and Cfilter calculated?
Does the RCR differ depending on the output voltage?
slyt777.pdf
Hello
The sync input is used to lock the internal switching frequency to an external clock.
You will need to use one of the methods shown in the attached application note to adjust your output voltage.
Thanks
slyt777.pdf
Hi,
Thank you for the enquiry. In devices containing the I2C feature, a resistor-to-digital (R2D) converter on the VSET/VID pin is used. This pin reads this resistor value and programs the device. Therefore, the output voltage can be set using the VSEL…
Hi Shibin,
You need another resistor between the amplifier output and the VSENSE pin. Please see how to design this in the following links
/cfs-file/__key/communityserver-discussions-components-files/196/1373.slyt777_5F00_Methods-of-output_2D00_voltage…
Hi Jim,
If you are looking to adjust output voltage, I recommend check this app note . You can change the bottom feedback resistor R2 or add variable resistor in parallel to an already installed R2. If you have optimized CFF with a fixed R1, keeping…
Hi Steven,
It looks like the circuit will work as the current limit circuit. The INA1805A21 will inject a voltage on the FB pin proportional to the load current and forcing the output voltage to decrease. However, I had not personally verified the circuit…
Hi Uzair,
I would recommend also looking at this app note for ways to adjust output voltage: /cfs-file/__key/communityserver-discussions-components-files/196/1373.slyt777_5F00_Methods-of-output_2D00_voltage-adjustment-for-dcdc-converters.pdf This has…
Hi Youssef,
Since you have confirmed the device works well after removed the MCU signal, could you please try with a mirror change to the RC filter at the FB pin?
slyt777_Methods of output-voltage adjustment for dcdc converters.pdf
