2130 - Power Manager II: We found a sensitivity on the resetb pin of POWR1220AT8 - measuring voltages on that pin with a multimeter have triggered resets of the device. Is there any recommendation for reducing noise sensitivity on that pin?

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• 280 - Power Manager II: How many I2C loads can I put on an I2C chain for Power Manager II devices?

  When using the Power Manager-II; POWR1220AT8, POWR1014A or POWR6AT6, it is important to know the loading and driving source of the full set-up. In a case where there are just a few I2C loads, whether Lattice POWR devices or others, the designer needs ...

• 832 - Power Manager II: How to implement multiple POWR1220AT8 Power Manager devices on a board?

  There are several ways to do this. In some cases the functions inside a Power Manager II device may be stand alone and not affect the other device controlling other supplies. In the case where there are zones or sections that need to get powered up ...

• 2855 - Power Manager II: Do I need to connect a 100 ohm series resistor between monitored voltages and VMON pins on the POWR1220AT8 device?

  No, you can connect the VMON pins directly to monitored voltages which are between 0 and 5.9V. Some of the Lattice evaluation board schematics do include a resistor between the monitored voltage and the VMON pins. This is typically only used with the ...

• 1071 - How to resolve simultaneous switching output (SSO) ground bounce problems/simultaneous switching output sso ground bounce vcc droop noise

  As a workaround, user may try the following guideline to reduce SSO noise: 1. Add decoupling capacitors for all VCC/GND Pairs. 2. Place the decoupling capacitors as close as possible to the power and ground pins of the device. Put small capacitors ...

• 1749 - Power Manager II: How do I design a PCB land pattern for Power Manager to meet UL standards?

  Designing circuit boards to meet safety certification agency requirements is a very complex subject, and the requirements you need to meet also vary by product and geographical market. For example, two common requirements for PCB design are for for ...