TPS62701YZFT

The TPS62701YZFT is a synchronous step-down DC/DC voltage converter offering high efficiency and low quiescent current. It produces a regulated output voltage from an input voltage of up to 6.5V. The TPS62701YZFT is a synchronous rectifier based on a proprietary high-speed control scheme that eliminates the need for an external element, resulting in low dropout operation without the need for an additional current limiter or voltage reference.

The TPS62701YZFT supports pulse-width modulation (PWM) and phase-locked loop (PLL). With its internal loop compensation, it allows for fast transient responses with a single resistor value. The device features an internally fixed frequency of 2.2MHz with an operating temperature range up to +125°C. It is available in an 8-pin WQFN package.

Application Field

The TPS62701YZFT is a synchronous DC/DC step-down converter and is suitable for multiple applications in various industries, including but not limited to:

• IoT/smart home applications
• Smart sensors
• Battery-operated systems
• Computer peripherals

Working Principle

The TPS62701YZFT is a synchronous DC/DC step-down converter which utilizes pulse-width modulation (PWM) and phase-locked loop (PLL) to regulate the output voltage. The pulse-width modulation is used to modulate the duty cycle of a switching element in the power stage, while the phase-locked loop is used to maintain the synchronization of the power signals to the input voltage. The PLL also locks the clock with the same frequency as the input frequency, which prevents the output from being affected by the frequency instability of the input power.

The TPS62701YZFT supports input voltages up to 6.5V and supports a wide range of output voltages from 0.9V to 5.5V. The device provides high efficiency, with typical efficiency of 95% @ 3.3V/2A and low quiescent current of 9.58 mA. The device also offers fast transient response with a single resistor value, and requires no external element, such as a current limiter, capacitor, or voltage reference.

The TPS62701YZFT provides several integrated functions, including an over-current protection, which actively monitors the output current and shuts down the device, preventing damage to the system. It also features an under-voltage lockout, which prevents malfunction during the start-up when a lower than expected input voltage is detected. The device also includes a programmable soft-start function that helps to reduce in-rush current in the start-up.

In conclusion, the TPS62701YZFT is a high-performance, synchronous DC/DC step-down converter that is suitable for a wide range of applications, with its low quiescent current, low voltage drop out, and high efficiency.