TPS43337-Q1

ACTIVE

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

Product details

Regulated outputs (#) 3 Vin (min) (V) 2 Vin (max) (V) 40 Vout (min) (V) 1.235 Vout (max) (V) 10 Iout (max) (A) 6 Features Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 0 Step-down DC/DC controller 2 Step-up DC/DC controller 1 LDO 0 Iq (typ) (mA) 0.034 Rating Automotive Switching frequency (max) (kHz) 600 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 3 Product type Microcontrollers
Regulated outputs (#) 3 Vin (min) (V) 2 Vin (max) (V) 40 Vout (min) (V) 1.235 Vout (max) (V) 10 Iout (max) (A) 6 Features Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 0 Step-down DC/DC controller 2 Step-up DC/DC controller 1 LDO 0 Iq (typ) (mA) 0.034 Rating Automotive Switching frequency (max) (kHz) 600 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 3 Product type Microcontrollers
HTSSOP (DAP) 38 101.25 mm² 12.5 x 8.1
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified 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
  • BuckA: Fixed Output Voltage of 3.4 V
  • BuckB: Fixed Output Voltage of 1.235 V
  • 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:
    34 µA (One Buck On), 43 µA (Two Bucks On)
  • Low Shutdown Current Ish < 4 µA
  • Boost Output Selectable: 7 V, 8.85 V, or 10 V
  • Programmable Frequency and External Synchronization Range:
    150 to 600 kHz
  • Separate Enable Inputs (ENA, ENB, ENC)
  • Selectable Forced Continuous Mode or Automatic
    Low-Power Mode at Light Loads
  • Sense Resistor or Inductor DCR Sensing for Buck Controllers
  • 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 Qualified 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
  • BuckA: Fixed Output Voltage of 3.4 V
  • BuckB: Fixed Output Voltage of 1.235 V
  • 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:
    34 µA (One Buck On), 43 µA (Two Bucks On)
  • Low Shutdown Current Ish < 4 µA
  • Boost Output Selectable: 7 V, 8.85 V, or 10 V
  • Programmable Frequency and External Synchronization Range:
    150 to 600 kHz
  • Separate Enable Inputs (ENA, ENB, ENC)
  • Selectable Forced Continuous Mode or Automatic
    Low-Power Mode at Light Loads
  • Sense Resistor or Inductor DCR Sensing for Buck Controllers
  • Out-of-Phase Switching Between Buck Channels
  • Peak Gate Drive Current 1.5 A
  • Thermally Enhanced 38-Pin HTSSOP (DAP) PowerPAD Package

The TPS43337-Q1 includes two current-mode synchronous buck controllers and a voltage-mode boost controller. The device is ideally suited as a pre-regulator stage with low IQ requirements and for systems 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, the buck controllers enable to operate automatically in low power-mode, consuming just 34 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 programable over 150 to 600 kHz or is synchronized to an external clock in the same range

The TPS43337-Q1 includes two current-mode synchronous buck controllers and a voltage-mode boost controller. The device is ideally suited as a pre-regulator stage with low IQ requirements and for systems 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, the buck controllers enable to operate automatically in low power-mode, consuming just 34 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 programable over 150 to 600 kHz or is synchronized to an external clock in the same range

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LOW IQ, SINGLE-BOOST, FIXED-VOLTAGE DUAL SYNCHRONOUS BUCK CONTROLLER datasheet (Rev. A) 06 Sep 2013
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

TPS43337-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM924A.ZIP (178 KB) - PSpice Model
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
Package Pins CAD symbols, footprints & 3D models
HTSSOP (DAP) 38 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos