ZHCSOK9A october 2021 – june 2023 DLPA300
PRODUCTION DATA
Board layout and routing guidelines must be followed explicitly and all external components used must be in the range of values and of the quality recommended for proper operation of the DLPA300.
Thermal pads must be tied to VRESET_RAIL. Do not connect to ground.
Provide suitable Kelvin connections for the switching regulator feedback pins: VBIAS (pin 9) and VRESET (pin 13).
Make the PCB traces that connect the switching devices: VBIAS_SWL (pin 8) and VRESET_SWL (pin 12) as short and wide as possible to minimize leakage inductances. Make the PCB traces that connect the switching converter components (inductors, flywheel diodes and filtering capacitors) as short and wide as possible. Ensure that the electrical loops that these components form are as small and compact as possible, with the ground referenced components forming a star connection.
Due to the fast switching transitions appearing on the sixteen reset OUTx pins, it is recommended to keep these traces as short as possible. Also, to minimize potential cross-talk between outputs, it is advisable to maintain as much clearance between each of the output traces.