Product details


Vin (Min) (V) 1.8 Vin (Max) (V) 9 Vout (Min) (V) 0.8 Vout (Max) (V) 8 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 2000 Iq (Typ) (mA) 1 Features Enable, Frequency Synchronization, Light Load Efficiency Duty cycle (Max) (%) 100 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

TSSOP (PW) 16 22 mm² 4.4 x 5 open-in-new Find other Boost converters (integrated switch)


  • High-Frequency (2-MHz) Voltage Mode PWM Controller
  • 1.8-V to 9.0-V Input Voltage Range
  • 0.8-V to 8.0-V Output Voltage Range (Higher in Non-Synchronous Boost Topology)
  • High-Efficiency Buck, Boost, SEPIC or Flyback (Buck-Boost) Topology
  • Synchronous Rectification for High-Efficiency
  • Drives External MOSFETs for High-Current Applications
  • Synchronizable Fixed-Frequency PWM or Automatic Pulsed Frequency Modulation (PFM) Mode
  • Built-In Soft-Start
  • User Programmable Discontinuous or Continuous Conduction Mode
  • Selectable Pulse-by-Pulse Current Limiting or Hiccup Mode Protection
    • Networking Equipment
    • Servers
    • Base Stations
    • Cellular Telephones
    • Satellite Telephones
    • GPS Devices
    • Digital Still and Handheld Cameras
    • Personal Digital Assistants (PDAs)

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The TPS43000 is a high-frequency, voltage-mode, synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With an automatic PFM mode, a shutdown current of less than 1 uA, a sleep-mode current of less than 100 uA and a full operating current of less than 2 mA at 1 MHz, it is ideal for building highly efficient, dc-to-dc converters.

The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V. Typical power sources are distributed power systems, two to four nickel or alkaline batteries, or one to two lithium-ion cells. It can be used to generate regulated output voltages from as low as 0.8 V to 8 V or higher. It operates either in a fixed-frequency mode, where the user programs the frequency (up to 2 MHz), or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. In this hysteretic mode of operation, very high efficiency can be maintained over a very wide range of load current. The device can also be synchronized to an external clock source using the dual function SYNC/SD input pin.

The TPS43000 features a selectable two-level current-limit circuit which senses the voltage drop across the energizing MOSFET. The user can select either pulse-by-pulse current limiting or hiccup mode overcurrent protection. The TPS43000 also features a low-power (LP) mode (which reduces gate charge losses in the N-channel MOSFET at high input/output voltages), undervoltage lockout, and soft-start. The TPS43000 is available in a 16-pin TSSOP (PW) package.

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Technical documentation

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Type Title Date
* Data sheet Multimode High-Frequency PWM Controller datasheet May 09, 2001
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
User guide 1-MHz, 3.3-V High Efficiency Synchronous Buck Converter Jun. 14, 2002
Application note 2.5V to 5V, 600kHz, High-Eff Synch Boost Converter With TPS43000 PWM Controller Apr. 29, 2002
More literature Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC Feb. 15, 2001

Design & development

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

Hardware development

document-generic User guide

The TPS43000EVM-001 is designed to help evaluate the TPS43000 full-featured controller. The TPS43000 is designed to drive a pair of external MOSFET's (N or P) and can be used with a wide range of output voltages and power levels. It can be widely used in networking equipment, servers, PDA's (...)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
Fly-Buck and Flyback Topology Selector
FLYBUCK-FLYBACK-DESIGN-CALC This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
  • Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
  • Capability to design up to 6 isolated outputs
  • Recommends ICs for desired application design
  • Incorporates loop compensation in designs
  • Compares efficiency, external component count and transformer currents for every topology (...)

Reference designs

Tiny LED Driver Reference Design
PMP30284 — This reference design contains a unique LED Driver to be supplied out of a single or a dual cell lithium ion battery. The circuit in SEPIC topology accepts input voltages as low as 1.8V to 8.4V. The TPS43000 was chosen for handling  low input voltages. Current regulation is provided with a (...)
document-generic Schematic document-generic User guide
Sync Boost 5V@4A for USB Battery Chargers
PMP5417 — PMP5417 is a high efficiency synchronous boost converter using the TPS43000. The 2.5V-4.2V input allows operation from a 3.3V source as well as a lithium-ion battery. The output power is 5V/4A.
Generates 4V@ 800mA avg/2.5Apeak using SEPIC configuration
PMP5624 — lowest input voltage, synchronous sepic w/ TPS43000, provides up to 10W output power
Design files
TPS43000 Synchronous Boost
PMP4632 — single cell LiIon boost converter w/ SR, TPS43000 covers 7W output power at lowest input voltage
Design files
Boost Converter (2.5V to 3.6V to 4.1V@2.4A)
PMP5719 — This very small 10W sync. Boost converter has an almost flat efficiency through the load (96% full load, 3.6Vin) and showing still 92% efficiency at 20mW load, 3.3Vin.
Design files
Design files
Negative Synchronous Buck -2.2V@6A
PMP5165 — This “upside-down” synchronous buck regulates a -2.2V output @ 6A from a -5.2 input voltage and achieves a full load efficiency of 93%. Level shifting in the feedback is necessary to maintain regulation.
Design files

CAD/CAE symbols

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TSSOP (PW) 16 View options

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