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Evaluation boards for linear voltage regulators are specialized hardware platforms designed to test and validate the performance of linear regulator ICs. These boards provide controlled environments for measuring voltage regulation accuracy, thermal stability, and transient response. They are critical in power management system development, ensuring reliable operation in applications ranging from consumer electronics to industrial automation.
| Type | Function Features | Application Examples |
|---|---|---|
| LDO Evaluation Boards | Low dropout voltage, ultra-low noise, high PSRR | Portable devices, RF circuits, precision sensors |
| Fixed Output Regulators | Precise factory-set output voltage, minimal external components | Embedded systems, IoT devices |
| Adjustable Regulators | Voltage programmable via resistor divider, wide input range | Test equipment, prototype development |
| Multi-Channel Regulators | Integrated multiple regulators, sequenced power delivery | Networking equipment, FPGA power supplies |
Typical evaluation boards include: - Input/output voltage rails with screw terminals or headers - Onboard reference voltage source - Error amplifier and feedback network - Pass transistor with thermal management - Protection circuits (OCP, OVP, thermal shutdown) - Test points for oscilloscope measurements - Interface connectors for system integration
| Parameter | Significance |
|---|---|
| Output Voltage Range | Determines compatible load devices |
| Maximum Output Current | Defines power delivery capability |
| PSRR (100Hz-1MHz) | Noise suppression performance |
| Dropout Voltage | Efficiency in low-voltage conditions |
| Thermal Resistance | Heat dissipation capability |
| Load Regulation | Voltage stability under varying current |
Main industries include: - Consumer Electronics: Smartphone power management, wearable devices - Telecommunications: Base station RF amplifiers, optical transceivers - Industrial Automation: PLC controllers, precision instrumentation - Automotive: ADAS power supplies, infotainment systems - Medical: Portable diagnostic equipment, imaging sensors
| Manufacturer | Representative Product | Key Features |
|---|---|---|
| TI | TPS7A49EVM | 150mA output, 75dB PSRR, adjustable |
| Infineon | BFDL500NSAEVM | 500mA LDO with automotive qualification |
| STMicroelectronics | LD1117V33 | 1A low-dropout regulator |
| Analog Devices | ADP7104-EVAL | 500mA, low noise for RF applications |
Key considerations: - Match input voltage range with target application - Verify output current capability with system requirements - Evaluate thermal management features - Check compatibility with system communication protocols (I2C/PMBus) - Consider form factor constraints - Assess available documentation and support tools
Emerging developments: - Integration of digital control interfaces - Advancements in wide bandgap semiconductor materials (GaN/SiC) - Increased focus on ultra-low quiescent current - Modular design for rapid prototyping - Enhanced simulation capabilities in evaluation software