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TPS543620

ACTIVE

4-V to 18-V input, advanced current mode, 6-A synchronous SWIFT™ step-down converter

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Data sheet

TPS543620

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 4 Vin (Max) (V) 18 Vout (Min) (V) 0.5 Vout (Max) (V) 7 Iout (Max) (A) 6 Iq (Typ) (uA) 1200 Switching frequency (Min) (kHz) 500 EMI features Low parasitic Hotrod packaging Switching frequency (Max) (kHz) 2200 Features Adjustable Current Limit, Enable, Forced PWM, Frequency Synchronization, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Adjustable Rating Catalog Regulated outputs (#) 1 Control mode ACM/AECM Duty cycle (Max) (%) 94
Vin (Min) (V) 4 Vin (Max) (V) 18 Vout (Min) (V) 0.5 Vout (Max) (V) 7 Iout (Max) (A) 6 Iq (Typ) (uA) 1200 Switching frequency (Min) (kHz) 500 EMI features Low parasitic Hotrod packaging Switching frequency (Max) (kHz) 2200 Features Adjustable Current Limit, Enable, Forced PWM, Frequency Synchronization, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Adjustable Rating Catalog Regulated outputs (#) 1 Control mode ACM/AECM Duty cycle (Max) (%) 94
VQFN-HR (RPY) 14 8 mm² 3 x 2.5
  • Fixed-frequency, internally-compensated advanced current mode (ACM) control
  • Integrated 25-mΩ and 6.5-mΩ MOSFETs
  • Input voltage range: 4 V to 18 V
  • Output voltage range: 0.5 V to 7 V
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz
  • Synchronizable to an external clock
  • 0.5-V, ±0.5% voltage reference accuracy over full temperature range
  • Selectable soft start times: 0.5 ms, 1 ms, 2 ms, and 4 ms
  • Monotonic start-up into pre-biased outputs
  • Selectable current limits to support 6-A and 3-A operation
  • Enable with adjustable input undervoltage lockout
  • Power good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • Pin-to-pin compatible with TPS543820 and TPS543320
  • –40°C to 150°C operating junction temperature
  • 2.5-mm × 3-mm, 14-pin VQFN-HR package with 0.5-mm pitch
  • Fixed-frequency, internally-compensated advanced current mode (ACM) control
  • Integrated 25-mΩ and 6.5-mΩ MOSFETs
  • Input voltage range: 4 V to 18 V
  • Output voltage range: 0.5 V to 7 V
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz
  • Synchronizable to an external clock
  • 0.5-V, ±0.5% voltage reference accuracy over full temperature range
  • Selectable soft start times: 0.5 ms, 1 ms, 2 ms, and 4 ms
  • Monotonic start-up into pre-biased outputs
  • Selectable current limits to support 6-A and 3-A operation
  • Enable with adjustable input undervoltage lockout
  • Power good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • Pin-to-pin compatible with TPS543820 and TPS543320
  • –40°C to 150°C operating junction temperature
  • 2.5-mm × 3-mm, 14-pin VQFN-HR package with 0.5-mm pitch

The TPS543620 is a high-efficiency 18-V, 6-A synchronous buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control. It is capable of providing high efficiency while running at a switching frequency up to 2.2 MHz. The device is in a small 2.5-mm x 3-mm HotRod™ VQFN package, which coupled with high efficiency at high frequency, makes it optimal for designs requiring a small solution size. The fixed frequency controller can operate from 500 kHz to 2.2 MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, selectable soft start times, montonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

The TPS543620 is a high-efficiency 18-V, 6-A synchronous buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control. It is capable of providing high efficiency while running at a switching frequency up to 2.2 MHz. The device is in a small 2.5-mm x 3-mm HotRod™ VQFN package, which coupled with high efficiency at high frequency, makes it optimal for designs requiring a small solution size. The fixed frequency controller can operate from 500 kHz to 2.2 MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, selectable soft start times, montonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.
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Technical documentation

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* Data sheet TPS543620 4-V to 18-V Input, 6-A Synchronous SWIFT™ Step-Down Converter with Internally Compensated Advanced Current Mode Control datasheet (Rev. C) PDF | HTML 29 Jun 2021
Technical article Which pinout is best? How individual, multifunctional and trimmed pinouts help address design challenges 28 Jun 2021
EVM User's guide TPS543620 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 06 May 2021
Certificate TPS543620EVM EU Declaration of Conformity (DoC) 27 Aug 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS543620EVM — 4-V to 18-V input 6-A synchronous step-down converter evaluation module

The TPS543620EVM is an evaluation module (EVM) for the TPS543620. The TPS543620 is a synchronous buck converter, integrating both power MOSFETs with low drain to source resistance to minimize solution size and provide high efficiency at full load. The TPS543620 uses fixed frequency Advanced (...)
User guide: PDF | HTML
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Simulation model

TPS543620 PSpice Transient Model

SLUM787.ZIP (339 KB) - PSpice Model
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Simulation model

TPS543620 SIMPLIS Transient and Average Model

SLUM766.ZIP (894 KB) - SIMPLIS Model
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Calculation tool

TPS543320 TPS543620 TPS543820 Calculator Tool and Schematic Checklist (Rev. A)

SLURAZ9A.ZIP (1461 KB)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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VQFN-HR (RPY) 14 View options

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