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SLVUC93 September 2021 TPSM63606

1.2 Features and Electrical Performance

Complete 6-A buck power stage with integrated power MOSFETs, buck inductor, and PWM controller
Wide input voltage operating range of 3 V to 36 V (absolute maximum rating of 42 V)
Default output voltage and switching frequency of 5 V and 1 MHz, respectively. Use jumper options for alternative configurations:
- 1.8 V, 500 kHz
- 2.5 V, 500 kHz
- 3.3 V, 750 kHz
- 12 V, 2 MHz
High efficiency across a wide load-current range
- Full-load efficiency of 92% and 91.4% at V_IN = 12 V and 24 V, respectively
- 95% and 93.5% efficiencies at half-rated load, V_IN = 12 V and 24 V, respectively
- External bias option reduces no-load supply current and enhances thermal performance
Improved EMI performance for noise-sensitive applications
- Meets CISPR 11 and CISPR 32 Class B EMI standards for both conducted and radiated emissions
- Input π-stage EMI filter with electrolytic capacitor for parallel damping
- Parallel input and output paths with symmetrical capacitor layouts minimize radiated field coupling
- Clock synchronization and FPWM mode provide constant switching frequency across the full load range
- Integrated input, VCC, and bootstrap capacitors enable low-noise switching performance
- The TPSM63606SEVM includes pseudo-random spread spectrum (PRSS) for lower peak emissions
Peak current-mode control architecture enables fast line and load transient response
- Integrated loop compensation and frequency-proportional slope compensation
Inherent protection features for robust and reliable design
- Overcurrent protection (OCP) with peak and valley current limits
- Thermal shurdown protection with hysteresis
- PGOOD indicator with 49.9-kΩ pullup resistor to VOUT
- Resistor-programmable input voltage UVLO set to turn on and off at V_IN of 5.1 V and 3.65 V, respectively
Fully assembled, tested and proven 4-layer PCB design with 76-mm × 63-mm total footprint