TPS56528DDAR

The TPS56528 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS56528 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 TPS56528 uses the D-CAP2™mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced EcoMode™ operation at light loads. Advanced EcoMode™ allows the TPS56528 to maintain high efficiency during lighter load conditions. The TPS56528 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 0.6 V and 7 V. The device also features a fixed 1-ms soft-start time and power good output. The TPS56528 is available in the 8-pin SO PowerPAD™ package, and designed to operate from -40°C to 85°C.

Applications

• Digital TV Power Supply
• High Definition Blu-ray Disc Players
• Networking Home Terminals
• Digital Set-Top Boxes (STB)

Key features

• 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: 0.6 V to 7 V
• Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
• -68 mΩ (High-Side) and 37 mΩ (Low-Side)
• High Efficiency, Less Than 10 μA at Shutdown
• High Initial Band-Gap Reference Accuracy
• Prebiased Soft Start
• 650-kHz Switching Frequency (fSW)
• Cycle-By-Cycle Overcurrent Limit
• Advanced Auto-Skip Eco-Mode™ for High Efficiency at Light Load
• Power Good Output
• Fixed Soft Start: 1 ms