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

Experimental Verification

This topic gives experimental verification of Type 2 co-layout design. The BOM of the co-layout board is the same as TI EVM board.

Figure 5-1 and Figure 5-2 show the board layout for the co-layout design.

GUID-20221117-SS0I-VLHK-T6HQ-BMCZMJ4PT9MR-low.svgFigure 5-1 Co-layout Design Top Layer
GUID-20221117-SS0I-DKZ4-F5TX-DTVNLB0SBXXF-low.svgFigure 5-2 Co-layout Design Bottom Layer
Figure 5-3 and Figure 5-4 shows the output voltage ripple of EVM board and co-layout board with TPS565242. Figure 5-5 and Figure 5-6 shows the output voltage ripple of EVM board and co-layout board with TPS565201. The results show that co-layout board with both TPS565201 and TPS565242 can work well.
GUID-20221214-SS0I-MF0X-S3D5-GBRBHQ58GTLQ-low.svgFigure 5-3 EVM Board with TPS565242 Output Ripple, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-MF6F-JBBX-0R2CS5CDJRMQ-low.svgFigure 5-4 Co-layout Board with TPS565242 Output Ripple, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-0B1Q-C0Z5-K3VVRW5S7ZQT-low.svgFigure 5-5 EVM Board with TPS565201 Output Ripple, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-XG2S-39QP-JSNMLL8GBRRS-low.svgFigure 5-6 Co-layout Board with TPS565201 Output Ripple, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A

Efficiency comparison between EVM and co-layout board which are tested at 1.05 Vout and 5 Vout are shown in Table 5-1. From the effciency results, it shows that the efficiency of co-layout board is slightly lower than EVM board.

Table 5-1 Efficiency Comparison between EVM and Co-layout Board, VIN = 12 V, IOUT = 5 A
Vout (V) Efficiency Vout (V) Efficiency
TPS565242 EVM board 1.05 84.2% 5 94.8%
TPS565242 Co-lay board 1.05 83.5% 5 94.4%
TPS565201 EVM board 1.05 77.3% 5 92.3%
TPS565201 Co-lay board 1.05 77.0% 5 92.2%

Switching spike voltage comparison between EVM and co-layout board which are tested at 1.05 Vout are shown in Table 5-2. From the switching spike results, it shows that co-layout board is slightly worse than EVM board.

Table 5-2 Switching Spike Comparison between EVM and Colay Board
Vin (V) Vout (V) Iout (A) Switching spike voltage (V)
TPS565242 EVM board 12 1.05 5 12.0
TPS565242 Co-lay board 12 1.05 5 12.4
TPS565201 EVM board 12 1.05 5 13.2
TPS565201 Co-lay board 12 1.05 5 14.7
GUID-20221214-SS0I-0RGP-ZM89-NKVNJB0GPVRW-low.svgFigure 5-7 EVM Board with TPS565242 Switching Spike, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-FJ4D-WF71-SDVK0MQ5XWLP-low.svgFigure 5-8 Co-layout Board with TPS565242 Switching Spike, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-DQDP-SCWC-ZKHZM1XTGMPW-low.svgFigure 5-9 EVM Board with TPS565201 Switching Spike, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A
GUID-20221214-SS0I-SSVP-16XM-TTT4RFWZHZPT-low.svgFigure 5-10 Co-layout Board with TPS565201 Switching Spike, VIN = 12 V, VOUT = 1.05 V, IOUT = 5 A

Figure 5-15 and Figure 5-12 shows the co-layout board with TPS565242 transient response with 0.1 A to 2.5 A and 1.25 A to 3.75 A. The current steps slew rate is set as 0.8 A/us.

GUID-20221214-SS0I-QQSL-VV7Q-L5W1LMDHFWLJ-low.svgFigure 5-11 Co-layout Board with TPS565242 Transient Response, VIN = 12 V, VOUT = 1.05 V, 0.1 A - 2.5 A
GUID-20221214-SS0I-WBV1-VB7W-GN7HK2CK9JPX-low.svgFigure 5-12 Co-layout Board with TPS565242 Transient Response, VIN = 12 V, VOUT = 1.05 V, 1.25 A - 3.75 A
Figure 5-15 and Figure 5-12 shows the co-layout board with TPS565201 transient response with 0.1 A to 2.5 A and 1.25 A to 3.75 A. The current steps slew rate is set as 0.8 A/us.
GUID-20221214-SS0I-RLBP-K1TK-63B4R1VX0QMK-low.svgFigure 5-13 Co-layout Board with TPS565201 Transient Response, VIN = 12 V, VOUT = 1.05 V, 0.1 A - 2.5 A
GUID-20221214-SS0I-LWTD-WKRT-1NXFNH3JWDTF-low.svgFigure 5-14 Co-layout Board with TPS565201 Transient Response, VIN = 12 V, VOUT = 1.05 V, 1.25 A - 3.75 A