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  • TPS55289-Q1: TPS55289 and constant current

    Resolved
    Part Number: TPS55289-Q1 Other Parts Discussed in Thread: TPS55289 I am using a TPS55289 in a USB-PD supply, and all is working fine until I impliment PPS mode. From the datasheet it looks like the TPS55289 can support constant current mode, from the…
    • Resolved

  • TPS55289: TPS55289 SW undershootvoltage

    Part Number: TPS55289 Other Parts Discussed in Thread: TPS568231 Hi sir, Customer measured TPS55289 sw pin, and found the negative voltage, which is under datasheet -0.3V. Attached the test report. TPS55289_SW.xlsx Questions: Is the measured…
    • Answered

  • TPS55289: TPS55289 schematic and compensation check

    Resolved
    Part Number: TPS55289 I am using two TPS55289 as independnt supplies for 2 x USB-PD ports. The input voltage will be 14V or 28V, so the solution needs to work for both. Output is up to 45W per port. So outputs are: 5V, 9V, 15V @ 3A 20V @ 2.25A Plus…
    • Resolved

  • TPS55289-Q1: I2C on TPS55289-Q1

    Part Number: TPS55289-Q1 Hi, Can I connect pin 18 (VCC) to pin 2 (Mode) for I2C slave address (74) or I need external power on TPS55289-Q1. I have two TPS55289-Q1 in the same chain over TCA9548ADGSR, the first is connected to GND and responding…

  • TPS55289: TPS55289 has slow start up followed by incorrect output voltage

    Part Number: TPS55289 I've got two TPS55289 power supplies on a new design that are exhibiting similar problems. I'll concentrate on one for now because the issue is most likely common to both. I used the TI workbench to do the initial design and component…

  • TPS55289: I2C Connection between TPS25751 and TPS55289

    TI Thinks Resolved
    Part Number: TPS55289 Other Parts Discussed in Thread: TPS25751 I2C Connection between TPS25751 and TPS55289 Does TPS25751 support I2C communication for PPS output of TPS55289?

  • RE: TPS55289-Q1: TPS55289-Q1: Internal CDC behavior when VISP-VISN exceeds 50mV

    Hi Sir, Yes, your understanding is correct. Thanks, Colin

  • TPS55289-Q1: TPS55289-Q1 sink current and evaluation board

    Part Number: TPS55289-Q1 Other Parts Discussed in Thread: TPS55289 , , TPS55289Q1EVM Hello, my goal is to drive a Peltier cell module connected between the input and the output of a buck-boost converter (architecture as shown in Fig. 1 of: www.ti.com…
    • Answered

  • TPS55289: TPS55289: description of DISCHG in Table 7-10

    Resolved
    Part Number: TPS55289 Other Parts Discussed in Thread: TPS55285 , TPS55287 The description of DISCHG in Table 7-10 of the datasheet is misleading: it talks about shutdown. However, shutdown resets the DISCHG bit to 0, so DISCHG=1 would never take effect…
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    • Answered

  • TPS55289: TPS55289: reset value of REF register (0/1) does not match datasheet

    Resolved
    Part Number: TPS55289 The reset value of the REF register (0/1h) of the TPS55289 when read via I²C is 0x00d2 rather than 0x01a4 as documented in the datasheet. Yet, the output voltage is 5V when setting OE to 1. Apparently, there are two copies of that…
    • Resolved

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