Overview
The PTH12000LAH is a 6-A, 12-V input non-isolated wide-output adjust power module produced by Texas Instruments. This module is part of the PTH12000 series, known for its high performance and compact size. It uses double-sided surface mount construction and synchronous rectification technology, making it ideal for applications where space, performance, and cost are critical design constraints. Although the PTH12000 series has been discontinued by Texas Instruments, it remains a significant component in existing designs and legacy systems.
Key Specifications
| Parameter | Min | Max | Units | |
|---|---|---|---|---|
| Input Voltage Range (Vin) | 10.8 | 13.2 | V | |
| Output Current (Io) | 0 | 6 | A | |
| Output Voltage Adjust Range (ΔVadj) | 0.8 | 1.8 | V | |
| Set-Point Voltage Tolerance (Vo tol) | ±2% | %Vo | ||
| Temperature Variation (ΔRegtemp) | ±0.5% | %Vo | ||
| Line Regulation (ΔRegline) | ±5 mV | mV | ||
| Load Regulation (ΔRegload) | ±5 mV | mV | ||
| Total Output Variation (ΔRegtot) | ±3% | %Vo | ||
| Operating Temperature Range (Ta) | -40 | +85 | °C | |
| Solder Reflow Temperature (Treflow) | 235 | °C |
Key Features
- Up to 6-A output current
- 12-V input voltage
- Wide-output voltage adjustment (0.8 V to 1.8 V for L-suffix devices)
- High power density of 230 W/in³
- Efficiencies up to 92%
- Pre-bias startup capability
- On/Off inhibit control
- Output over-current protection (non-latching, auto-reset)
- Surface mount package with through-hole options
- Safety agency approvals: UL/cUL 60950, EN60950 VDE
Applications
The PTH12000LAH is suitable for various applications where compact, high-performance power conversion is required. These include:
- Telecom systems
- Industrial control systems
- General-purpose circuits
- Low-power dual-voltage systems using DSP, microprocessor, or ASIC
Q & A
- What is the input voltage range of the PTH12000LAH?
The input voltage range is from 10.8 V to 13.2 V.
- What is the maximum output current of the PTH12000LAH?
The maximum output current is 6 A.
- How is the output voltage adjusted on the PTH12000LAH?
The output voltage is adjusted using a single external resistor connected between the Vo Adjust and GND pins.
- What are the safety agency approvals for the PTH12000LAH?
The module has safety agency approvals including UL/cUL 60950 and EN60950 VDE.
- What is the operating temperature range of the PTH12000LAH?
The operating temperature range is from -40°C to +85°C.
- Is an external output capacitor required for basic operation?
No, an external output capacitor is not required for basic operation, but adding one can improve the transient response.
- What type of capacitors are recommended for input and output?
For input, a minimum of 100 μF capacitor with a minimum 750 mArms ripple current rating is recommended. For output, adding 100 μF of distributed capacitance can improve transient response.
- How does the on/off inhibit control work?
The inhibit control has an internal pull-up to Vin, and if left open-circuit, the module will operate when input power is applied. A small low-leakage MOSFET is recommended to control this input.
- What is the power density of the PTH12000LAH?
The power density is 230 W/in³.
- Is the PTH12000LAH still in production?
No, the PTH12000 series has been discontinued by Texas Instruments.
