The TPS53129RGET is a dual, adaptive on-time D-CAP2 mode synchronous buck controller. The TPS53129RGET enables system designers to complete the suite of various end equipment’s power bus regulators with cost effective, low component count, and low standby current solution. The main control loop for the TPS53129RGET uses the D-CAP2 mode control which provides a very fast transient response with no external components.
The TPS53129RGET also has a circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range.The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.
The TPS53129RGET is available in 4-mm × 4-mm 24-pin QFN (RGE) or 24-pin TSSOP (PW) packages, and is specified from –40°C to 85°C ambient temperature range.
Feature
- D-CAP2 Mode Control
- Fast Transient Response
- No External Parts Required for
Loop Compensation - 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
- Low-Side RDS(ON) Loss-Less
Current Sensing - Adaptive Gate Drivers with Integrated
Boost Diode - Adjustable Soft Start
- Non-Sinking Pre-Biased Soft Start
- 700-kHz Switching Frequency
- Cycle-by-Cycle Over-Current Limiting
Control - 30-mV to 300-mV OCP Threshold Voltage
- Thermally Compensated OCP by 4000 ppm/°C
at ITRIP - Auto-Skip Eco-mode for High Efficiency at
Light Load - APPLICATIONS
- Point-of-Load Regulation in Low Power
Systems for Wide Range of Applications- Digital TV Power Supply
- Networking Home Terminal
- Digital Set-Top Box (STB)
- DVD Player/Recorder
- Gaming Consoles
- Point-of-Load Regulation in Low Power
