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
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
TSSOP (PW) 16 22 mm² 4.4 x 5
  • 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
  • APPLICATIONS
    • Networking Equipment
    • Servers
    • Base Stations
    • Cellular Telephones
    • Satellite Telephones
    • GPS Devices
    • Digital Still and Handheld Cameras
    • Personal Digital Assistants (PDAs)

  • 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
  • APPLICATIONS
    • Networking Equipment
    • Servers
    • Base Stations
    • Cellular Telephones
    • Satellite Telephones
    • GPS Devices
    • Digital Still and Handheld Cameras
    • Personal Digital Assistants (PDAs)

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.

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

Design & development

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Evaluation board

TPS43000EVM-001 — 1-MHz, 3.3V, High-Efficiency Synchronous Buck Converter with TPS43000 PWM

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, (...)

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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 (...)
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Fly-Buck and Flyback Topology Selector

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.
Reference designs

PMP30284 — Tiny LED Driver Reference Design

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 (...)
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TSSOP (PW) 16 View options

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