TL7660IDGKTG4

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TL7660IDGKTG4 Application Field and Working Principle

The TL7660IDGKTG4 is a high performance polyphase synchronous buck controller that is part of the PMIC - Voltage Regulators - DC DC Switching Regulators family. It is designed to drive high power load from 3.2V to 42V input supply and from 0.5V to 6V output supply. and provides adjustable output current up to 40A.

The TL7660IDGKTG4 provides the best performance in a small and extremely reliable package. With its extraordinary low power dissipation and highly efficient operation, it is suitable for a wide range of applications including, but not limited to, high efficiency DC/DC converters and voltage regulators, power supplies/ converters in mobile/ datacom/ telecom systems, portable systems.

Working Principle

The TL7660IDGKTG4 is a synchronous buck controller IC that uses a buck converter topology to efficiently convert a higher input voltage to a lower output voltage. The current through the inductor is regulated by sensing the output voltage and controlling the on/off duty cycle of the switching element (MOSFET). This allows the core to operate in a constant switching frequency while its current mode control keeps load regulation at good steady state values.

The device operates on a variable frequency PFM (pulse frequency modulation) to allow for a stable output voltage ripple in high line/load conditions and an adjustable output voltage via a voltage divider. The IC also provides integrated current sensing for current limit, short circuit protection and over-voltage protection circuits.

Features

• Integrated 3 phase high side and low side MOSFET drivers.
• 20A max load current
• Input voltage: 3.2V to 42V
• Output voltage: 0.5V to 6V
• Supply voltage: 5V (3V to 5.5V)
• Leadfree/Halogen-free Compliant
• Soft-start
• Short circuit, delay and over voltage protection
• Programmable output frequency

Conclusion

The TL7660IDGKTG4 is an ideal solution for DC/DC converters and voltage regulators that require high performance and power efficiency in a small package. With its integrated 3 phase MOSFET drivers, the controller can efficiently regulate the output voltage while simultaneously providing current sensing and protection features. Its variable frequency PFM and adjustable output voltage also make it a suitable choice for a wide range of applications.

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