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TPS43333-Q1

ACTIVE

Automotive 2V to 40V Low Iq Single Boost & Dual Synchronous Buck Controller

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Data sheet

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LM5127-Q1 ACTIVE 42V wide-Vin triple buck and boost controller for automotive applications Updated improved version of TPS43333-Q1

TPS43333-Q1

ACTIVE
Data sheet Order now

Product details

Processor supplier Generic Processor name Generic Product type Microcontrollers Regulated outputs (#) 3 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 0 Vin (min) (V) 2 Vin (max) (V) 40 Vout (min) (V) 0.9 Vout (max) (V) 11 Iout (max) (A) 6 Features Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 2 Step-up DC/DC controller 1 Iq (typ) (mA) 0.03 Switching frequency (max) (kHz) 600 Shutdown current (ISD) (typ) (µA) 3
Processor supplier Generic Processor name Generic Product type Microcontrollers Regulated outputs (#) 3 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 0 Vin (min) (V) 2 Vin (max) (V) 40 Vout (min) (V) 0.9 Vout (max) (V) 11 Iout (max) (A) 6 Features Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 2 Step-up DC/DC controller 1 Iq (typ) (mA) 0.03 Switching frequency (max) (kHz) 600 Shutdown current (ISD) (typ) (µA) 3
HTSSOP (DAP) 38 101.25 mm² 12.5 x 8.1
  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C2
  • Two Synchronous Buck Controllers
  • One Pre-Boost Controller
  • Input Range up to 40 V (Transients up to 60 V),
    Operation Down to 2 V When Boost is Enabled
  • Low-Power-Mode IQ: 30 µA (One Buck On), 35 µA
    (Two Bucks On)
  • Low-Shutdown Current Ish < 4 µA
  • Buck Output Range 0.9 V to 11 V
  • Boost Output Selectable: 7 V, 10 V, or 11 V
  • Programmable Frequency and External
    Synchronization Range: 150 kHz to 600 kHz
  • Separate Enable Inputs (ENA, ENB)
  • Selectable Forced-Continuous Mode or Automatic
    Low-Power Mode at Light Loads
  • Sense Resistor or Inductor DCR Sensing
  • Out-of-Phase Switching Between Buck Channels
  • Peak Gate-Drive Current: 1.5 A
  • Thermally Enhanced 38-Pin HTSSOP (DAP)
    PowerPAD™ Package
  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C2
  • Two Synchronous Buck Controllers
  • One Pre-Boost Controller
  • Input Range up to 40 V (Transients up to 60 V),
    Operation Down to 2 V When Boost is Enabled
  • Low-Power-Mode IQ: 30 µA (One Buck On), 35 µA
    (Two Bucks On)
  • Low-Shutdown Current Ish < 4 µA
  • Buck Output Range 0.9 V to 11 V
  • Boost Output Selectable: 7 V, 10 V, or 11 V
  • Programmable Frequency and External
    Synchronization Range: 150 kHz to 600 kHz
  • Separate Enable Inputs (ENA, ENB)
  • Selectable Forced-Continuous Mode or Automatic
    Low-Power Mode at Light Loads
  • Sense Resistor or Inductor DCR Sensing
  • Out-of-Phase Switching Between Buck Channels
  • Peak Gate-Drive Current: 1.5 A
  • Thermally Enhanced 38-Pin HTSSOP (DAP)
    PowerPAD™ Package

The TPS43333-Q1 includes two current-mode synchronous buck controllers and a voltage-mode boost controller. The device is ideal for use as a pre-regulator stage with low Iq requirements and for applications that must survive supply drops due to cranking events. The integrated boost controller allows the device to operate down to 2 V at the input without seeing a drop on the buck-regulator output stages. At light loads, one can enable the buck controllers to operate automatically in low-power mode, consuming just 30 µA of quiescent current.

The buck controllers have independent soft-start capability and power-good indicators. Current foldback in the buck controllers and cycle-by-cycle current limitation in the boost controller provide external MOSFET protection. The switching frequency is programmable over 150 kHz to 600 kHz or can synchronize to an external clock in the same range.

The TPS43333-Q1 includes two current-mode synchronous buck controllers and a voltage-mode boost controller. The device is ideal for use as a pre-regulator stage with low Iq requirements and for applications that must survive supply drops due to cranking events. The integrated boost controller allows the device to operate down to 2 V at the input without seeing a drop on the buck-regulator output stages. At light loads, one can enable the buck controllers to operate automatically in low-power mode, consuming just 30 µA of quiescent current.

The buck controllers have independent soft-start capability and power-good indicators. Current foldback in the buck controllers and cycle-by-cycle current limitation in the boost controller provide external MOSFET protection. The switching frequency is programmable over 150 kHz to 600 kHz or can synchronize to an external clock in the same range.
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Technical documentation

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Type Title Date
* Data sheet TPS43333-Q1 Low IQ, Single Boost, Dual Synchronous Buck Controller datasheet (Rev. C) PDF | HTML 11 Jul 2016
Design guide TPS4333x-Q1 / TPS4335x-Q1 Design Checklist 28 Oct 2013
User guide TPS4333xEVM 01 Apr 2011

Design & development

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

Evaluation board

TPS43330EVM — TPS43330EVM Evaluation Module

The Texas Instruments TPS43330EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPS43330 Low Iq, Single Boost, Dual Synchronous Buck Controller.

User guide: PDF
Not available on TI.com
Simulation model

TPS43333-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM857A.ZIP (170 KB) - PSpice Model
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Calculation tool

SLVC528 — TPS4333x-Q1, TPS4335x-Q1 Switching-Mode Power-Supply Component Calculation Tool

Supported products & hardware

Supported products & hardware

Products
Multi-channel ICs (PMICs)
  • TPS43330A-Q1 — Automotive 2V to 40V Low Iq Single Boost & Dual Synchronous Buck Controller
  • TPS43332-Q1 — Automotive 2V to 40V Single Boost & Dual Synchronous Buck Controller with Freq. Spread Spectrum
  • TPS43333-Q1 — Automotive 2V to 40V Low Iq Single Boost & Dual Synchronous Buck Controller
  • TPS43335-Q1 — Automotive 2V to 40V low Iq single boost & dual synchronous buck controller
  • TPS43336-Q1 — Automotive 2V to 40V Single Boost & Dual Synchronous Buck Controller with Freq. Spread Spectrum
  • TPS43337-Q1 — Automotive 2V to 40V Low Iq Single Boost & Dual Fixed Output Voltage Synchronous Buck Controller
  • TPS43350-Q1 — 40V Dual Synchronous Buck Controller
  • TPS43351-Q1 — 40V Dual Synchronous Buck Controller with Frequency Spread Spectrum
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HTSSOP (DAP) 38 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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