The TPS54229EDDA is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54229EDDA enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54229EDDA uses the D-CAP2 mode control that provides afast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads.Eco-mode allows the TPS54229EDDA to maintain high efficiency during lighter load conditions. The TPS54229EDDA also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54229EDDA is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.
Feature
- D-CAP2 Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VIN Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7.0 V
- Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 160 mΩ (High Side) and 110 mΩ (Low Side) - High Efficiency, less than 10 μA at shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Pre-Biased Soft Start
- 650-kHz Switching Frequency (fSW)
- Cycle By Cycle Over Current Limit
- Auto-Skip Eco-mode for High Efficiency at Light Load
