Overview
The PTH05020WAS from Texas Instruments is a non-isolated, wide-output adjust power module designed for high-performance applications. This module is part of the PTH family, which offers OEM designers a combination of high performance, small footprint, and industry-leading features. It is optimized for powering complex multi-voltage, multi-processor systems, including those with high-speed DSPs, microprocessors, and bus drivers. The module features a double-sided surface mount construction and provides step-down power conversion with up to 22 A of output current from a 5-V input bus voltage.
Key Specifications
| Characteristic | Min | Typ | Max | Units |
|---|---|---|---|---|
| Output Current (Io) | 0 | - | 22 | A |
| Input Voltage Range (Vin) | 4.5 | - | 5.5 | V |
| Set-Point Voltage Tolerance (Vo tol) | - | - | ±2% | %Vo |
| Temperature Variation (∆Regtemp) | - | - | ±0.5% | %Vo |
| Line Regulation (∆Regline) | - | - | ±5 mV | mV |
| Load Regulation (∆Regload) | - | - | ±5 mV | mV |
| Total Output Variation (∆Regtot) | - | - | ±3% | %Vo |
| Efficiency (η) | - | 91-95% | - | % |
| Operating Temperature Range (Ta) | -40 | - | 85 | °C |
| Switching Frequency (ƒs) | 250 | 300 | 340 | kHz |
| External Input Capacitance (Cin) | 1,000 | - | - | µF |
| External Output Capacitance (Cout) | 0 | - | 330 | µF |
Key Features
- Wide-Output Voltage Adjust: The output voltage can be set to any value between 0.8 V and 3.6 V using a single resistor.
- High Efficiency: Efficiencies up to 96%.
- High Power Density: 155 W/in³.
- Auto-Track™ Sequencing: Enables modules to track each other or any external voltage during power up and power down.
- On/Off Inhibit: Allows the module’s output to be disabled by applying a low-level ground signal.
- Output Voltage Sense: Compensates for voltage drop between the module and the load.
- Margin Up/Down Controls: Adjusts the output voltage by ±5%.
- Over-Current Protection: Non-latching, auto-reset protection.
- Over-Temperature Protection: Ensures load fault protection.
- Safety Agency Approvals: UL 1950, CSA 22.2 950, EN60950 VDE (Pending).
Applications
The PTH05020WAS is designed for complex multi-voltage, multi-processor systems, including those with high-speed DSPs, microprocessors, and bus drivers. It is particularly suited for applications requiring flexible, high-performance power conversion, such as:
- Multi-processor digital systems.
- High-speed data processing systems.
- Telecommunications equipment.
- Industrial control systems.
- High-density computing environments.
Q & A
- What is the input voltage range of the PTH05020WAS?
The input voltage range is from 4.5 V to 5.5 V.
- What is the maximum output current of the PTH05020WAS?
The maximum output current is 22 A.
- How can the output voltage be adjusted?
The output voltage can be adjusted using a single resistor connected between the Vo Adjust pin and the GND pin.
- What is the efficiency of the PTH05020WAS?
The efficiency can be up to 96% depending on the load and output voltage.
- Does the PTH05020WAS have over-current protection?
Yes, it has non-latching, auto-reset over-current protection.
- What is the operating temperature range of the PTH05020WAS?
The operating temperature range is from -40°C to +85°C.
- Can the PTH05020WAS be used in high-density computing environments?
Yes, it is suitable for high-density computing environments due to its high power density and small footprint.
- What safety agency approvals does the PTH05020WAS have?
The module has approvals from UL 1950, CSA 22.2 950, and EN60950 VDE (Pending).
- How does the Auto-Track™ sequencing feature work?
The Auto-Track™ feature allows the output voltage to follow an external voltage during power up and power down, enabling modules to track each other or any external voltage.
- Is an external output capacitor required for the PTH05020WAS?
No, an external output capacitor is not required for basic operation, but adding one can improve transient response performance.
