TPS53128

illustrate

The TPS53128 is a dual-channel, D-CAP2™ mode synchronous buck controller with adaptive turn-on time. This device enables system engineers to cost-effectively complete regulated power bus kits for a wide range of end devices with a small number of external components and low standby consumption. The D-CAP2™ mode topology used TPS53128 the main control cycle provides a very fast transient response without the need for external components.

The TPS53128 also features dedicated circuitry that allows the unit to accommodate not only output capacitors of low equivalent series resistors (ESRs) such as POSCAP/Severance-Cap, but also ceramic capacitors. Fixed-frequency emulation adaptive on-time control supports efficient and seamless operation under heavy load conditions, reducing operating frequency between PWM modes in the range of light loads to milliamps.

characteristic

• ð - CAP2™ mode control
  • Fast transient response
  • For loop compensation without external components
  • Compatible with ceramic output capacitors
• High initial reference accuracy (± 1%)
• Low output ripple
• Wide input voltage range: 4.5 V to 24 V
• Output voltage range: 0.76 V to 5.5 V
• Lossless current detection for low-end R DS(ON).
• Adaptive gate driver with integrated boost diode
• Adjustable soft start
• Non-sinking pre-bias soft start
• 350 kHz switching frequency
• Cycle-by-cycle overcurrent limit control
• OCP threshold voltages from 30 mV to 300 mV
• The heat compensation of OCP is 4000 ppm / °C at the time
• Automatically skip eco mode in light load high efficiency
• apply
  • Point load regulation is widely used in low-power systems
    • Digital TV power supply