TC1220ECHTR Integrated Circuits (ICs)

PMIC - Voltage Regulators - DC DC Switching Regulators

TC1220ECHTR is a DC-DC Step-Up/Step-Down converter that provides high efficiency and low noise performance. It has a fixed on/off control voltage output, allowing either a PWM control or a variable control through a pot. The product also offers several integrated features, allowing the design to range from a low power board level supply to a highly efficient power solution.

Application Fields

The TC1220ECHTR is suitable for a wide range of applications including:

• PC power supplies
• Industrial control systems
• Battery-powered equipment
• Automotive, telecom and broadcasting systems
• Household appliances and many more

Working Principle

The TC1220ECHTR is a DC-DC converter using a synchronous buck-boost technique. It is designed to operate from an input voltage range from 9V to 60V. The device features external MOSFETs and a high-side current sensing circuit to provide heavy-load performance. The switching frequency is programmable and may be synchronized.

The on/off control output operates as a proof-of-existence signal that is switched when the output voltage reaches its targeted voltage and that ensures the stability of the converter loop even in harsh temperature environments.

When the control signal is off, the converter will stop switching to reduce the output ripple and input current to a minimum. The output voltage can also be programmed using an RT pin and a voltage divider between the ground and the RT pin.

The output power is determined by the controller current limit and the thermal protection limit. The current limit is configurable by an external resistor, and the thermal protection is programmable by the internal compensation circuit.

Features

• Integrated Synchronous Buck-Boost Processor
• Selectable Output Voltage
• Low on-resistance MOSFETs
• Programmable Switching Frequency
• High Efficiency
• Low Voltage Shutdown
• Thermal Protection
• Current Limit

Conclusion

The TC1220ECHTR is a cost-effective solution for a wide range of applications. Its features and benefits make it ideal for applications such as PC power supplies, industrial control systems, battery-powered equipment, automotive, telecom, broadcasting systems, household appliances and many more. The device also offers low on-resistance MOSFETs, programmable switching frequency, high efficiency, low voltage shutdown, thermal protection, and current limit.