UCC3889DG4

 Introduction of UCC3889DG4

The UCC3889DG4 is a Switched Mode Power Supply (SMPS) control IC that belongs to the UCC3889 series, which offers high efficiency, low power consumption, and flexible programmability for a wide range of applications. It is manufactured by TI and operates directly from the rectified universal mains. It supports valley or zero voltage switching for minimum switching losses, efficient quasi-resonant operation at high power levels, frequency reduction at low power standby, and cycle skipping mode at very low loads. It also provides various protection features, such as safe restart mode, continuous mode protection, overvoltage protection, short winding protection, undervoltage protection, overtemperature protection, and overcurrent protection. It has a high level of integration, giving a very low external component count.

 Product Specifications of UCC3889DG4

The UCC3889DG4 has the following main specifications :

•  Package: SOIC-8 plastic, small outline package; 8 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body

•  Operating temperature: 0°C to 70°C (TA)

•  Mains supply operation: 70 to 276 V AC

•  Output isolation: Non-Isolated

•  Voltage - Breakdown: 650 V

•  Voltage - Start Up: 8.4 V

•  Voltage - Supply (Vcc/Vdd): 6.3V ~ 9.3V

•  Frequency - Switching: 250 kHz

•  Power (Watts): 250 W

•  Fault Protection: Current Limiting, Over Power, Over Temperature, Over Voltage, Short Circuit

•  Control Features: Error amplifier, Soft start

 Product Features of UCC3889DG4

The UCC3889DG4 provides the following features :

•  High efficiency: The UCC3889DG4 supports valley or zero voltage switching for minimum switching losses, efficient quasi-resonant operation at high power levels, frequency reduction at low power standby for improved system efficiency (≤3 W), and cycle skipping mode at very low loads.

•  Low power consumption: The UCC3889DG4 has an on-chip start-up current source and a standby indication pin to indicate low output power consumption. It also supports dynamic power management, which reduces the power consumption by up to 40% compared to previous generations of SMPS control ICs.

•  Flexible programmability: The UCC3889DG4 supports a variety of development tools and languages, such as Quartus Prime, Nios II, OpenCL, and C/C++. The FPGA can be configured and updated via the processor or an external source, enabling rapid prototyping and design iterations.

•  Protection features: The UCC3889DG4 provides various protection features, such as safe restart mode, continuous mode protection, overvoltage protection (latched in UCC3889D; safe restart in UCC3889DG4), short winding protection, undervoltage protection, overtemperature protection, and overcurrent protection.

 Product Applications of UCC3889DG4

The UCC3889DG4 can be used for a variety of applications that require high efficiency, low power, and flexible programmability, such as:

•  TV and monitor supplies: The UCC3889DG4 can provide stable and efficient power for LCD, LED, and OLED displays, as well as audio and video processing circuits.

•  Adapters and chargers: The UCC3889DG4 can support various output voltages and currents for different devices, such as laptops, smartphones, tablets, and cameras.

•  Industrial and medical equipment: The UCC3889DG4 can handle complex control and communication tasks, such as motor control, machine vision, and industrial Ethernet, as well as process and display high-resolution images, such as ultrasound, X-ray, and MRI.

 Frequently Asked Questions of UCC3889DG4

•  Q: What is the difference between UCC3889DG4 and UCC3889D?

•  A: The UCC3889DG4 and the UCC3889D have the same specifications and features, except for the overvoltage protection mode. The UCC3889DG4 has a safe restart mode, which means that the device will try to restart automatically after an overvoltage fault, without cycling the mains supply. The UCC3889D has a latched mode, which means that the device will shut down permanently after an overvoltage fault, and needs to be restarted by cycling the mains supply.

•  Q: How can I get started with the UCC3889DG4 development?

•  A: You can use the UCC3889 SMPS control IC development kit, which includes the UCC3889DG4 device, a development board, a power supply, cables, and software tools. You can also refer to the UCC3889 SMPS control IC documentation for more information and guidance.