SDAA417 July   2026 TPS546A24A , TPS546A24S , TPS546B24A , TPS546B24S , TPS546D24A , TPS546D24S , TPSM8D6B24 , TPSM8D6C24 , TPSM8S6B24S

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Theory
  6. 3Design Example
    1. 3.1 Design Requirements
    2. 3.2 Schematic
    3. 3.3 Performance Plots
  7. 4Telemetry
  8. 5Overvoltage and Undervoltage Protection
  9. 6Limitations
  10. 7Summary
  11. 8References

3.3 Performance Plots

Efficiency
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
Figure 3-2 Efficiency
Output Voltage Ripple - 0A
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
CH1 = SW CH2 = VOUT
Figure 3-3 Output Voltage Ripple - 0A
Output Voltage Ripple - 25A
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
CH1 = SW CH2 = VOUT
Figure 3-4 Output Voltage Ripple - 25A
Load Transient - 5A to 15A @ 1A/μs
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
CH2 = VOUT CH3 = ILOAD 5A being sunk by external DC load.
Figure 3-5 Load Transient - 5A to 15A @ 1A/μs
IC Thermal Performance - TAMBIENT = 25°C
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
IOUT = 25A Air Velocity = 0 LFM
Figure 3-6 IC Thermal Performance - TAMBIENT = 25°C
Inductor Thermal Performance - TAMBIENT = 25°C
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
IOUT = 25A Air Velocity = 0 LFM
Figure 3-7 Inductor Thermal Performance - TAMBIENT = 25°C
IC Thermal Performance - TAMBIENT = 45°C
Note:
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
IOUT = 25A Air Velocity = 0 LFM
Figure 3-8 IC Thermal Performance - TAMBIENT = 45°C
Inductor Thermal Performance - TAMBIENT = 45°C
Note:
L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias
IOUT = 25A Air Velocity = 0 LFM
Figure 3-9 Inductor Thermal Performance - TAMBIENT = 45°C
Startup Using Enable Signal

L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias

Figure 3-10 Startup Using Enable Signal
Shutdown Using Enable Signal

L = 1μH VOUT = 6V COUT = 6 × 100μF Ceramic, 2 x 330μF Polymer
VIN = 12V Fsw = 650kHz Internal Bias

Figure 3-11 Shutdown Using Enable Signal