TPS74901RGWR

TPS74901RGWR Application Field and Working Principle

The TPS74901RGWR is a linear voltage regulator in Texas Instruments\' Power Management Integrated Circuits (PMIC) portfolio. It is designed for generating very low output voltages with adjustable features and excellent transient response. The device is optimized for space-constrained, frequency- and power-sensitive applications, such as computing, download front-end modules, automotive, industrial, and healthcare. The TPS74901RGWR does not require any external compensation, bypass capacitors, or external sensing for a stable loop response.

Features

• Very Low Output Voltage: 0.8V to 3.6V
• High Output Current: up to 3A
• Output Voltage Stability: 0.1%/V
• Output Noise: 150 μVPP
• Input Voltage Range: up to 5.5V (Processor Voltage Level)
• Current Limit Protection: Yes
• Over-Temperature Protection: Yes
• Current Mode Control: Yes
• Load Transient Response: 125mV/µs

Applications

• Computing
• Download front-end modules
• Automotive
• Industrial
• Healthcare

Working Principle

The TPS74901RGWR is a linear voltage regulator that uses current-mode control to regulate the output. At startup, the device will enter a soft-start mode, where the output voltage is gradually increased to its final set point. Once the output has reached its set point, the device will enter normal operating mode, where the output is regulated using a current-mode control loop.

The current-mode control loop works by monitoring the load current. When the load current increases, the device will increase the output voltage to compensate. Conversely, when the load current decreases, the device will reduce the output voltage. The device also has a current-limit protection feature, which will kick in if the load current exceeds a certain threshold. This prevents the device from being damaged by an over-current condition.

Conclusion

The TPS74901RGWR is a linear voltage regulator from Texas Instruments\' PMIC portfolio. It is designed for generating very low output voltages with adjustable features and excellent transient response. The device is well suited for frequency- and power-sensitive applications, such as computing, download front-end modules, automotive, industrial, and healthcare. The TPS74901RGWR uses a current-mode control loop to regulate the output voltage, and also has current-limit protection for added safety.