Overview
The LMZ22010TZ/NOPB from Texas Instruments is a SIMPLE SWITCHER® power module designed to provide a high-efficiency, step-down DC-DC conversion solution. This module is capable of driving up to 10-A load and is available in an innovative package that enhances thermal performance. It accepts an input voltage range of 6 V to 20 V and can deliver an adjustable output voltage as low as 0.8 V. The LMZ22010 is a reliable and robust design with various protection features, including thermal shutdown, programmable input under-voltage lockout, output over-voltage protection, short-circuit protection, and output current limit. It also supports startup into a pre-biased output, making it suitable for multiple rail logic applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 6 to 20 | V |
| Output Voltage Range | 0.8 to 6 | V |
| Maximum Output Current | 10 | A |
| Maximum Total Output Power | 50 | W |
| Efficiency | Up to 92% | % |
| Junction Temperature Range | -40 to 125 | °C |
| Switching Frequency Range | 314 to 600 kHz | kHz |
| Output Voltage Ripple | 24 mVPP (BW at 20 MHz) | mVPP |
| Line Regulation | ±0.2% (VIN = 12 V to 20 V, IOUT = 10 A) | % |
| Load Regulation | 1 mV/A (VIN = 12 V, IOUT = 0.001 A to 10 A) | mV/A |
| Thermal Shutdown | 165°C (Rising), 150°C (Falling) | °C |
Key Features
- Protection against inrush currents and faults, including input UVLO and output short circuit protection.
- Frequency synchronization input (350 kHz to 600 kHz) for synchronizing the PWM operating frequency.
- Current sharing capability for higher load currents by connecting multiple modules in parallel.
- Flexible start-up sequencing using external soft-start, tracking, and precision enable.
- Support for negative output voltage applications.
- High efficiency reduces system heat generation.
- Low radiated emissions (EMI) tested to EN55022.
- No external heat sink required.
- Simple current sharing for higher current applications.
- Low output voltage ripple.
- Fully enabled for WEBENCH® Power Designer.
Applications
The LMZ22010 is typically used in applications requiring high-efficiency step-down DC-DC conversion. These include:
- Space-constrained and high thermal requirement applications.
- Multiple rail logic applications where current paths may exist between different power rails during startup.
- Systems requiring low radiated emissions and high efficiency to reduce system heat generation.
- Applications needing flexible start-up sequencing and current sharing capabilities.
Q & A
- What is the input voltage range of the LMZ22010?
The input voltage range of the LMZ22010 is 6 V to 20 V.
- What is the maximum output current of the LMZ22010?
The maximum output current of the LMZ22010 is 10 A.
- What is the efficiency of the LMZ22010?
The LMZ22010 has an efficiency of up to 92%.
- Does the LMZ22010 require an external heat sink?
No, the LMZ22010 does not require an external heat sink.
- Can the LMZ22010 be used in current sharing applications?
- What is the switching frequency range of the LMZ22010?
The switching frequency range of the LMZ22010 is 314 kHz to 600 kHz.
- Does the LMZ22010 support negative output voltage applications?
- How does the LMZ22010 handle thermal shutdown?
The LMZ22010 has a thermal shutdown feature that activates at 165°C (rising) and deactivates at 150°C (falling).
- Is the LMZ22010 compatible with WEBENCH Power Designer?
- What kind of protection features does the LMZ22010 have?
The LMZ22010 includes protection features such as thermal shutdown, programmable input under-voltage lockout, output over-voltage protection, short-circuit protection, and output current limit.
