Overview
The TPS53014DGS from Texas Instruments is a single, adaptive on-time D-CAP2™ mode synchronous buck controller. This device is designed to provide a cost-effective solution with a low external component count and low standby current, making it suitable for a wide range of applications. The TPS53014 operates with input voltages from 4.5 V to 28 V and can produce output voltages from 0.77 V to 7 V. It features a fast transient response and is compatible with both low ESR output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The controller is available in a 3-mm × 3-mm 10-pin VSSOP package and is specified for an ambient temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Input Voltage Range (VIN) | 4.5 | 28 | V |
| Output Voltage Range | 0.77 | 7 | V |
| Switching Frequency | 500 | kHz | |
| Operating Ambient Temperature Range | –40 | 85 | °C |
| Storage Temperature Range | –55 | 150 | °C |
| Junction Temperature Range | –40 | 150 | °C |
| Package Type | 10-pin VSSOP (DGS) | ||
| Package Size | 3.00 mm × 3.00 mm |
Key Features
- Fast Transient Response: No external parts required for loop compensation.
- Adaptive On-Time Control: Supports seamless transition between PWM mode and Eco-mode™ operation.
- Auto-Skip Eco-Mode™: Increases efficiency at light load conditions.
- Protection Features: Includes cycle-by-cycle overcurrent limiting, overvoltage protection (OVP), undervoltage protection (UVP), under voltage lockout (UVLO), and thermal shutdown (TSD).
- Integrated Gate Drivers: Adaptive gate drivers with integrated boost PMOS switch.
- Soft Start and Pre-Biased Soft Start: Adjustable soft start function to prevent current from being pulled from the output during startup.
- Internal 5V Regulator: Low-Dropout (LDO) regulator to provide a regulated voltage for the drivers and internal logic.
Applications
- Point-of-Load Regulation: Suitable for low power systems.
- Digital TV Power Supply: Ideal for power supply in digital TVs.
- Networking Home Terminal: Used in networking equipment.
- Digital Set-Top Box (STB): Applicable in STBs.
- DVD Player/Recorder: Suitable for DVD players and recorders.
- Gaming Consoles: Used in gaming consoles and other similar applications.
Q & A
- What is the input voltage range of the TPS53014DGS?
The input voltage range is from 4.5 V to 28 V.
- What is the output voltage range of the TPS53014DGS?
The output voltage range is from 0.77 V to 7 V.
- What is the switching frequency of the TPS53014DGS?
The switching frequency is 500 kHz.
- What type of package does the TPS53014DGS come in?
The device is available in a 10-pin VSSOP (DGS) package.
- What are the key protection features of the TPS53014DGS?
The device includes cycle-by-cycle overcurrent limiting, overvoltage protection (OVP), undervoltage protection (UVP), under voltage lockout (UVLO), and thermal shutdown (TSD).
- How does the Auto-Skip Eco-Mode™ feature work?
The Auto-Skip Eco-Mode™ increases efficiency at light load conditions by reducing the switching frequency and entering discontinuous conduction mode when the load current decreases.
- What is the purpose of the internal 5V regulator in the TPS53014DGS?
The internal 5V Low-Dropout (LDO) regulator provides a regulated voltage for the drivers and the IC's internal logic.
- How does the soft start function work in the TPS53014DGS?
The soft start function is adjustable and prevents current from being pulled from the output during startup by slowly activating synchronous rectification and ramping up the output voltage smoothly.
- What are the recommended capacitors for the input, bootstrap, and VREG5 in the TPS53014DGS?
A minimum 10-μF high-quality ceramic capacitor for the input, a minimum 0.1-μF high-quality ceramic capacitor for the bootstrap, and a minimum 4.7-μF high-quality ceramic capacitor for VREG5 are recommended.
- What is the operating ambient temperature range of the TPS53014DGS?
The operating ambient temperature range is from –40°C to +85°C.
