SLUAAM7A december   2022  – july 2023 TPS561201 , TPS561208 , TPS561243 , TPS561246 , TPS562201 , TPS562208 , TPS562243 , TPS562246 , TPS563201 , TPS563208 , TPS563252 , TPS563257 , TPS564201 , TPS564208 , TPS564242 , TPS564247 , TPS564252 , TPS564255 , TPS564257 , TPS565201 , TPS565208 , TPS565242 , TPS565247 , TPS566242 , TPS566247

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Comparison of Pin-out
  6. 3Schematic Diagram
  7. 4Layout Consideration
  8. 5Experimental Verification
  9. 6Summary
  10. 7References
  11. 8Revision History

Comparison of Pin-out

Figure 2-1 shows TPS56x242/7 pin-out with SOT-563 package which has been optimized. It integrates BST pin and add AGND for pin 4. Figure 2-2 shows TPS56x201/8 pin-out with SOT-236 package which is different from TPS56x242/7. Figure 2-3 shows TPS56x202/3/6/7 pin-out with SOT-563 package. Both packages and pin locations are different for these three families. VBST pin of TPS56x201/8 and TPS56x202/3/6/7 is used to supply input for the high-side NFET gate driver circuit. AGND pin of TPS56x242/7 is the ground of internal analog circuitry.

GUID-20221020-SS0I-VQML-PJRJ-MLSCMCHQRFB9-low.svgFigure 2-1 TPS56x242/7 Pin-out
GUID-A77D6920-A532-4E38-A51C-1238652DC4AC-low.svgFigure 2-3 TPS56x202/3/6/7 Pin-out
GUID-20221020-SS0I-GKBQ-NP00-C8LKQRSZK50Q-low.svgFigure 2-2 TPS56x201/8 Pin-out
Table 2-1 Pin Functions
Pin Description
Name NO.
TPS56x242/7 TPS56x202/3/6/7 TPS56x201/8
VIN 1 1 3 Input voltage supply pin. Connect the input decoupling capacitors between VIN and GND.
SW 2 2 2 Switch node pin. Connect the output inductor to this pin.
GND 3 3 1 GND pin source terminal of the low-side power NFET as well as the ground terminal for controller circuit.
FB 6 6 4 Converter feedback input. Connect to the output voltage with a feedback resistor divider.
EN 5 5 5 Enable input control. Driving EN high enables the converter.
VBST NA 4 6 Supply input for the high-side NFET gate driver circuit. Connect 0.1-uF capacitor between VBST and SW pins.
AGND 4 NA NA Ground of the internal analog circuitry. Connect AGND to the GND plane.