Overview
The PTH12050YAH is a non-isolated DC/DC converter module designed by Texas Instruments, specifically for bus termination in DDR (Double Data Rate) and QDR (Quad Data Rate) memory applications. This module is part of the PTHxx050Y series, which offers high efficiency, compact size, and ready-to-use functionality. It operates from a 12-V input and generates a VTT output that can source or sink up to 6 A of current (with a peak of 8 A) to accurately track the VREF input. The VTT output is essential for the bus termination supply voltage, while VREF serves as the reference voltage for the memory and chipset bus receiver comparators.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 10.8 | - | 13.2 | V |
| Output Current | - | - | 6 A (Continuous), 8 A (Peak) | A |
| Operating Temperature | -40 | - | 85 | °C |
| Efficiency | - | 84% | - | % |
| Output Ripple (pk-pk) | - | - | 20 mVpp | mV |
| Overcurrent Threshold | - | - | 12 A | A |
| Recovery Time | - | - | 80 µsec | µsec |
| Switching Frequency | 200 | 250 | 300 | kHz |
| Input Capacitance | 560 | - | - | µF |
| Output Capacitance (Non-ceramic) | 940 | - | - | µF |
| Output Capacitance (Ceramic) | 400 | - | - | µF |
Key Features
- High Efficiency: Up to 84% efficiency, making it suitable for high-performance applications.
- Compact Size: Small footprint of 0.87 in × 0.5 in, ideal for space-constrained designs.
- Ready-to-Use Module: Simplifies design and integration by providing a complete solution for bus termination.
- On/Off Inhibit: Allows the VTT bus to be turned off to save power in standby mode.
- Output Overcurrent Protection: Non-latching, auto-reset protection to ensure reliable operation.
- Undervoltage Lockout: Prevents operation below a specified input voltage threshold.
- Point-of-Load Alliance (POLA) Compatible: Ensures compatibility with POLA standards for modular power systems.
- Safety Agency Approvals: Meets UL/cUL60950, EN60950, and VDE safety standards.
Applications
The PTH12050YAH is designed for use in DDR and QDR memory applications, particularly in:
- Server and data center systems
- High-performance computing systems
- Telecommunication equipment
- Industrial control systems
- Any application requiring precise bus termination for DDR/QDR memory
Q & A
- What is the input voltage range for the PTH12050YAH?
The input voltage range is from 10.8 V to 13.2 V.
- What is the maximum output current of the PTH12050YAH?
The module can source or sink up to 6 A of current continuously, with a peak of 8 A.
- What is the operating temperature range of the PTH12050YAH?
The operating temperature range is from -40°C to 85°C.
- What is the efficiency of the PTH12050YAH?
The efficiency is up to 84%.
- Does the PTH12050YAH have overcurrent protection?
Yes, it has non-latching, auto-reset output overcurrent protection.
- What type of capacitors are recommended for the input and output of the PTH12050YAH?
For the input, a minimum of 560 µF non-ceramic capacitor is recommended. For the output, 940 µF non-ceramic and 400 µF ceramic capacitors are recommended.
- Is the PTH12050YAH compatible with POLA standards?
Yes, it is compatible with Point-of-Load Alliance (POLA) standards.
- What safety standards does the PTH12050YAH meet?
The module meets UL/cUL60950, EN60950, and VDE safety standards.
- How does the on/off inhibit feature work on the PTH12050YAH?
The on/off inhibit feature allows the VTT bus to be turned off to save power in standby mode. The control pin has an internal pull-up to the input voltage VIN.
- What is the switching frequency of the PTH12050YAH?
The switching frequency ranges from 200 kHz to 300 kHz.
