550kHz 1.5V to 40V, 1A buck-boost converter with 5V fixed output voltage, AEC-Q100 qualified

550kHz 1.5V to 40V, 1A buck-boost converter with 5V fixed output voltage, AEC-Q100 qualified



Product details


Topology Buck-Boost Vin (Min) (V) 1.5 Vin (Max) (V) 40 Vout (Max) (V) 5 Vout (Min) (V) 5 Duty cycle (Max) (%) 99 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification Switch current limit (Typ) (A) 1.5 Switching frequency (Min) (kHz) 330 Switching frequency (Max) (kHz) 550 Iq (Typ) (mA) 0.1 Rating Automotive Iout (Max) (A) 1 Operating temperature range (C) -40 to 125 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device HBM ESD Classification level 1B for
      pin 7 (L2), pin 8 (VOUT), pin 9 (5Vg)
    • Device HBM ESD Classification 2 for pins 1–6
      and 10–20
    • Device CDM ESD Classification Level C4B
  • Switch-Mode Regulator
    • 5 V ±2%, Normal Mode
    • 5 V ±3%, Low-Power or Crossover Mode
  • Switching Frequency, 440 kHz (typical)
  • Input Operating Range, 1.5 V to 40 V, (Vdriver)
    • 1-A Load-Current Capability
    • 200-mA Load-Current Capability Down to 2-V
      Input (Vdriver)
    • 120-mA Load-Current Capability Down to
      1.5-V Input (Vdriver)
  • Enable Function
  • Low-Power Operation Mode
  • Switched 5-V Regulated Output on 5Vg With
    Current Limit
  • Programmable Slew Rate and Frequency
    Modulation for EMI Consideration
  • Reset Function With Deglitch Timer and
    Programmable Delay
  • Alarm Function for Undervoltage Detection and
  • Thermally Enhanced Package for Efficient Heat
open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)


The TPIC74100 is a switch-mode regulator with integrated switches for voltage-mode control. With the aid of external components (LC combination), the device regulates the output to 5 V ±3% for a wide input-voltage range.

The TPIC74100 offers a reset function to detect and indicate when the 5-V output rail is outside of the specified tolerance. This reset delay is programmable using an external timing capacitor on the REST pin. Additionally, an alarm (AOUT) feature is activated when the input supply rail Vdriver is below a prescaled specified value (set by the AIN pin).

The TPIC74100 has a frequency-modulation scheme to minimize EMI. The clock modulator permits a modulation of the switching frequency to reduce interference energy in the frequency band.

The 5Vg output is a switched 5-V regulated output with internal current limiting to prevent RESET from being asserted when powering a capacitive load on the supply line. This function is controlled by the 5Vg_ENABLE pin. If there is a short to ground on this output (5Vg output), the output self-protects by operating in a chopping mode. This does, however, increase the output ripple voltage on VOUT during this fault condition.

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Technical documentation

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Type Title Date
* Data sheet TPIC74100-Q1 Buck and Boost Switch-Mode Regulator datasheet (Rev. B) Dec. 05, 2014
Application note Improve the TPIC74100 Load Transient Performance with Suitable Inductor and Capa Aug. 23, 2018
Technical article Solving voltage transient challenges with an integrated buck-boost converter Mar. 12, 2018
Application note TPIC74100-Q1 Buck/Boost Switch Mode Regulator (Rev. B) Sep. 22, 2010
User guide TPIC74100EVM User's Guide Sep. 26, 2008

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 Texas Instruments TPIC74100EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPIC74100 Switch Mode Power Supply – Buck Regulator. The EVM contains one DC/DC converter.

  • Switch-Mode Regulator With Integrated Switches
    • Less board space
    • Lower cost
    • Higher EMI performance
    • Improved protection off the integrated switches
  • Buck/Boost Mode
    • Wide input voltage range (ideal for automotive applications where the power supply must stay stable during the start of the engine-cranking (...)

Design tools & simulation

SLIM313.ZIP (73 KB) - PSpice Model
SLIM325.TSC (366 KB) - TINA-TI Reference Design
SLIM326.ZIP (44 KB) - TINA-TI Spice Model
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
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 20 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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