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See Technical Specifications

TPS51220ARSNR

3-V to 28-V, synchronous peak current mode buck controller for notebook power in RSN/RTV package

Manufacturer:

TI
Mfr.Part #:

TPS51220ARSNR
Datasheet:

TPS51220ARSNR Datasheet (PDF)
Input Voltage Range:

2.5 V to 6 V
Output Voltage:

0.6 V to (V_IN-0.2 V)
Output Current:

Up to 2 A
Switching Frequency:

300 kHz
EDA/CAD Models:

Request Free CAD Models for TPS51220ARSNR

Email: [email protected]

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Tel: +852 95804164

TPS51220ARSNR General Description

The TPS51220A is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220A supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out-of-phase. The TPS51220A can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220A is available in the 32-pin 5×5/4×4 QFN package and is specified from –40°C to 85°C.

Key Features

Input Voltage Range: 4.5 V to 32 V
Output Voltage Range: 1 V to 12 V
Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
Programmable Droop Compensation
Voltage Servo Adjustable Soft Start
200-kHz to 1-MHz Fixed-Frequency PWM
Selectable Current/D-CAP Mode Architecture
180° Phase Shift Between Channels
Resistor or Inductor DCR Current Sensing
Adaptive Zero Crossing Circuit
Powergood Output for Each Channel
OCL/OVP/UVP/UVLO Protections
(OVP Disable Option)
Thermal Shutdown (Non-Latch)
Output Discharge Function (Disable Option)
Integrated Boot Strap MOSFET Switch
QFN-32 (RTV/RSN) Package
APPLICATIONS
- Notebook Computer System and I/O Bus
- Point of Load in LCD TV, MFP

Application

Powering high-performance CPUs in notebook computers, servers, gaming systems, and more
Point-of-load power supplies
Embedded systems and industrial applications where high power density and efficiency are required
Telecom infrastructure equipment
High-end graphics cards and FPGA applications

Specifications

Product Name	TPS51220ARSNR	Product Type	Step-Down Converter
Input Voltage Range	2.5 V to 6 V	Output Voltage	0.6 V to (V_IN-0.2 V)
Output Current	Up to 2 A	Switching Frequency	300 kHz
Operating Temperature	-40°C to 85°C	Product Category	Switching Controllers
Topology	Buck	Number of Outputs	2 Output
Duty Cycle - Max	99 %	Input Voltage	4.5 V to 32 V
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT	Development Kit	TPS51220AEVM-476
Moisture Sensitive	Yes	Operating Supply Current	1.3 mA
Series	TPS51220A	Factory Pack Quantity	3000
Subcategory	PMIC - Power Management ICs	Type	Current Mode PWM Controllers
Unit Weight	0.001411 oz

TPS51220ARSNR Equivalent Parts

You may consider these replacement and alternative parts:

Part Number

In-Stock

Package

Description

Part Number: TPS51218

In-Stock: 9642

Package:

Description: TPS51218: A similar synchronous buck controller with lower maximum output current (18A)

Part Number: TPS51216

In-Stock: 7323

Package:

Description: TPS51216: Another version of the synchronous buck controller with a lower maximum output current (16A)

Part Number: TPS51123

In-Stock: 8648

Package:

Description: TPS51123: A similar synchronous buck controller with an integrated MOSFET and lower maximum output current (10A)

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Ratings and Reviews

K**y 05/13/2023

I'm blown away by the speed and efficiency of Avaq's delivery service. The components arrived so quickly, I couldn't believe it.

L**a 12/17/2022

Avaq's delivery speed is unmatched! I ordered these components on a Thursday, and they arrived on Monday. Impressive!

J**n 09/29/2022

These TPS51220ARSNR components from Avaq are exactly what I needed for my project. They work flawlessly, and the price was very reasonable.

K**e 08/19/2022

I've been searching for these components for weeks, and Avaq had them in stock and ready to ship. They arrived quickly, and I couldn't be happier with my purchase.