TPS61100PW

Voltage/Current - Output 3:	--
Base Part Number:	TPS61100
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	0.8 V ~ 3.3 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	0.9 V ~ 3.6 V, 500mA
Voltage/Current - Output 1:	1.5 V ~ 5.5 V, 1.8A
Frequency - Switching:	500kHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Up (Boost) Synchronous (1), Linear (LDO) (1)
Part Status:	Not For New Designs
Packaging:	Tube

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TPS61100PW Application Field and Working Principle

The TPS61100PW is a dual-output, fixed-frequency, synchronous, buck switch-mode power supply (SMPS) controller IC with an integrated low-side MOSFET. It can be used in a wide range of synchronous buck topologies, such as single-inductor, single-inductor/dual-inductor, and dual-inductor configurations. This product is part of the Power Management ICs (PMICs) family of products and can be classified under the Voltage Regulators category, further subcategorized as Linear and Switching.The combination of its high integration, wide input voltage range, high output current accuracy, and the ability to accurately program output voltage, make the TPS61100PW well-suited for various mobile and other applications, such as mobile phones, IT equipment, gaming consoles, tablets, media players, and portable appliances.The main features of the TPS61100PW include an integrated FET driver to reduce external components, monotonic input voltage start-up with tight output voltage tolerances. Moreover, a free-running constant frequency PWM (pulse width modulation) ensures a wide range of pulse-width-modulated (PWM) designs at different frequencies and also provides noise suppression for sensitive analog circuitry. For added internal protection it includes thermal shut-down and current limit protection.

Application Field

The TPS61100PW is suitable for a wide range of applications, such as mobile phones, IT equipment, gaming consoles, tablets, media players, and portable appliances, but most suitable when low-voltage operation at high efficiency is required. It can be used in a number of synchronous buck topologies, such as Flyback, SEPIC (single-ended primary inductor converter), and Dual Boost, as well as other DC-DC conversion topologies, such as power-factor correction (PFC).

Working Principle

The TPS61100PW operates in a fixed frequency mode, which allows it to switch at a constant frequency regardless of the load conditions, which is beneficial from an efficiency, thermal, and sound-level design perspective. It provides a constant frequency, PWM (pulse-width modulation) signal, whose width is proportional to the required output voltage.The output voltage of the TPS61100PW is accurately regulated over a wide range of input voltages, from a 2.7V minimum to 5.5V maximum. It also has a low RDS(ON) integrated nFET for improved efficiency. This device also protects the load from overcurrent with undervoltage, overvoltage, and over-temperature protections.In order to ensure the desired accuracy levels, the internal compensation network can be externally tailored to the specific application. The accurate regulation of the average current consumption of the load is delivered through the programmable maximum duty cycle, together with the high power density achieved by the wide input voltage range.In summary, the TPS61100PW is a highly integrated, synchronous, buck switch-mode power supply (SMPS) controller IC with an integrated low-side MOSFET and can be classified under the Voltage Regulators category as a part of the Power Management ICs (PMICs) family of products, further sub categorized as Linear and Switching. This product is suitable for a wide range of applications, such as mobile phones, IT equipment, gaming consoles, tablets, media players, and portable appliances, and offers an integrated FET driver to reduce external components, monotonic input voltage start-up and tight output voltage tolerances, while also providing internal protections. Its fixed-frequency operating mode, together with its accurate regulation over a wide input voltage range, allows it to deliver relatively high efficiency and thermal solutions.

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