Overview
The PTH03000WAH is a non-isolated power module from Texas Instruments, designed for high-performance and compact applications. This module operates with an input voltage of 3.3 V and provides a wide-output voltage adjustment range from 0.9 V to 2.5 V. It delivers up to 6 A of output current, making it suitable for space-constrained designs where performance and cost are critical. The module uses synchronous rectification technology and double-sided surface mount construction, minimizing its footprint to about half the size of a standard postage stamp.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Input Voltage Range | 3 | - | 3.6 | V |
| Output Voltage Range | 0.9 | - | 2.5 | V |
| Output Current | - | - | 6 | A |
| Efficiency | - | - | 95 % | % |
| Power Density | - | - | 115 W/in³ | W/in³ |
| Operating Temperature Range | -40 | - | 85 | °C |
| Switching Frequency | - | - | 700 | kHz |
| External Input Capacitance | 100 | - | - | µF |
| External Output Capacitance (Non-Ceramic) | 0 | - | 1000 | µF |
| Current Limit | - | - | 13 | A |
| Under-Voltage Lockout (UVLO) | 2.6 | 2.8 | 3 | V |
Key Features
- Wide-output voltage adjustment from 0.9 V to 2.5 V using a single external resistor (Rset).
- High efficiency up to 95% and high power density of 115 W/in³.
- On/off inhibit control for output voltage management.
- Output current limit and over-temperature protection for reliability.
- Surface mount and through-hole package options.
- Soft-start power-up sequence to limit in-rush current.
Applications
The PTH03000WAH is ideal for various applications where space, performance, and cost are significant design constraints. These include:
- Telecom and industrial systems.
- General purpose circuits, including low-power dual-voltage systems using DSPs, microprocessors, or ASICs.
Q & A
- What is the input voltage range of the PTH03000WAH?
The input voltage range is from 3 V to 3.6 V. - How is the output voltage adjusted on the PTH03000WAH?
The output voltage is adjusted using a single external resistor (Rset) connected between the Vo Adjust and GND pins. - What is the maximum output current of the PTH03000WAH?
The maximum output current is 6 A. - What are the operating temperature limits for the PTH03000WAH?
The operating temperature range is from -40°C to +85°C. - Does the PTH03000WAH have over-temperature protection?
Yes, it has over-temperature protection that shuts down the module if the junction temperature exceeds 150°C. - How does the on/off inhibit control work on the PTH03000WAH?
The inhibit control allows the output voltage to be turned off by applying a low voltage to the Inhibit pin. If left open-circuit, the module functions normally. - What is the switching frequency of the PTH03000WAH?
The switching frequency is up to 700 kHz. - What type of capacitors are recommended for the input and output of the PTH03000WAH?
For the input, a 100 µF capacitor with low ESR is recommended. For the output, optional capacitors up to 1000 µF can be used. - Is the PTH03000WAH RoHS compliant?
Yes, certain package options are RoHS compliant. - What is the power density of the PTH03000WAH?
The power density is 115 W/in³.
