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VIPER38LD
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VIPER38LD

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High voltage converter, energy-efficient, compact size
  • Package: DIP-8 or SO-8 package
  • Essence: Voltage regulator and power switch
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Input Voltage Range: 4.5V to 60V
  • Output Voltage Range: 3.3V to 48V
  • Maximum Output Current: 380mA
  • Switching Frequency: Up to 200kHz
  • Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The VIPER38LD IC has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. CS: Current sense input
  5. EN: Enable pin for turning on/off the device
  6. VCCSENSE: Voltage sensing input for VCC
  7. VDD: Supply voltage for internal control circuitry
  8. HV: High voltage drain pin

Functional Features

  • Integrated high-voltage startup
  • Built-in error amplifier for precise voltage regulation
  • Over-temperature protection
  • Overload and short-circuit protection
  • Low standby power consumption
  • Soft-start function for smooth power-up

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows for versatile applications
  • Compact size and low component count
  • High efficiency and energy-saving capabilities
  • Robust protection features ensure reliable operation
  • Soft-start function prevents excessive inrush current

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications
  • Requires external components for complete power management solution

Working Principles

The VIPER38LD is a high-voltage converter that combines a voltage regulator and power switch in a single IC. It operates by converting the input voltage to a regulated output voltage using a switching technique. The integrated high-voltage startup circuit ensures reliable operation even at high input voltages. The error amplifier compares the output voltage with a reference voltage, adjusting the duty cycle of the internal power switch to maintain a stable output. Various protection features such as over-temperature, overload, and short-circuit protection ensure safe operation.

Detailed Application Field Plans

The VIPER38LD is commonly used in various applications, including:

  1. Power supplies for industrial equipment
  2. LED lighting systems
  3. Home appliances
  4. Automotive electronics
  5. Battery chargers
  6. Telecom and networking devices

Its compact size, wide input voltage range, and energy-efficient characteristics make it suitable for diverse power management needs.

Detailed and Complete Alternative Models

  1. VIPER26LD: Similar functionality with higher maximum output current (500mA)
  2. VIPER50LD: Higher maximum output current (700mA) with additional features like adjustable frequency and synchronization capability
  3. VIPER53LD: Enhanced version with higher maximum output current (1A) and extended temperature range (-40°C to +175°C)

These alternative models offer increased performance and flexibility for specific application requirements.

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10 domande e risposte comuni relative all'applicazione di VIPER38LD nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of VIPER38LD in technical solutions:

  1. Q: What is VIPER38LD? A: VIPER38LD is a high-voltage converter IC designed for offline power supplies, commonly used in various technical solutions.

  2. Q: What are the key features of VIPER38LD? A: VIPER38LD features an integrated 800V avalanche-rugged power MOSFET, adjustable frequency up to 150 kHz, and built-in protection functions.

  3. Q: What are the typical applications of VIPER38LD? A: VIPER38LD is commonly used in applications such as LED lighting, home appliances, industrial automation, and power adapters.

  4. Q: How does VIPER38LD help in LED lighting applications? A: VIPER38LD provides efficient power conversion for LED lighting, enabling dimming control, constant current regulation, and high power factor correction.

  5. Q: Can VIPER38LD be used in low-power applications? A: Yes, VIPER38LD can be used in both low-power and high-power applications, thanks to its adjustable frequency and wide input voltage range.

  6. Q: Does VIPER38LD offer any protection features? A: Yes, VIPER38LD includes built-in protection features like overvoltage protection, overload protection, and thermal shutdown to ensure safe operation.

  7. Q: What is the maximum output power that VIPER38LD can handle? A: VIPER38LD can handle output powers up to 15W, making it suitable for a wide range of medium-power applications.

  8. Q: Can VIPER38LD operate with a wide input voltage range? A: Yes, VIPER38LD has a wide input voltage range of 85V to 265V, allowing it to be used in various regions with different mains voltages.

  9. Q: Is VIPER38LD easy to implement in technical solutions? A: Yes, VIPER38LD comes in a compact package and requires minimal external components, making it relatively easy to integrate into technical solutions.

  10. Q: Are there any reference designs or application notes available for VIPER38LD? A: Yes, STMicroelectronics provides reference designs and application notes that offer guidance on using VIPER38LD in different applications, helping engineers during the design process.

Please note that these answers are general and may vary depending on specific requirements and use cases.