TPS61088-Q1 Automotive 10-A 2.7-V to 12-V Synchronous Boost Converter |

TPS61088-Q1 (ACTIVE) Automotive 10-A 2.7-V to 12-V Synchronous Boost Converter



The TPS61088-Q1 is a 2.7-V to 12-VIN high power density, synchronous boost converter designed to provide a high-efficiency, small-size solution for automotive applications. The TPS61088-Q1 has a minimum input voltage of 2.7 V and therefore can act as a boost for a single or two cell Li-Ion back-up battery (BUB) in applications such as E-Call that also require a high power output to drive the speaker, antenna, and other circuits.

The device can also be used as a post-boost, boosting from the main automotive system 3.3-V rail to power CAN transceivers and other circuits requiring 5 V.

The 12.6-VOUT capability allows the TPS61088-Q1 to also power audio amplifiers (for example, 10 V or 11 V for E-Call), antenna, power-over-coax (PoC), and automotive audio bus (A2B) devices.

The 10-A switch current enables applications that require operation during cold crank, for example, at 3.5 VIN to 11 VOUT while still delivering up to 2-A load current.

The TPS61088-Q1 uses adaptive constant off-time peak-current-control topology to regulate the output voltage. In moderate-to-heavy load condition, the TPS61088-Q1 works in the pulse width modulation (PWM) mode. In light load condition, the device has two operation modes selected by the MODE pin. One is the pulse frequency modulation (PFM) mode to improve the efficiency and another one is the forced PWM mode to avoid application problems caused by low switching frequency. The switching frequency in the PWM mode is adjustable ranging from 200 kHz to 2.2 MHz by an external resistor. The TPS61088-Q1 also implements a programmable soft-start function and an adjustable switching peak-current-limit function. In addition, the device provides 13.2-V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection.

The TPS61088-Q1 is available in a 4.50-mm × 3.50-mm 20-pin VQFN package.


  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C, TA
  • Input Voltage Range: 2.7 to 12 V
  • Output Voltage Range: 4.5 to 12.6 V
  • 10-A Switch Current
  • Higher than 90% Efficiency at VIN = 5 V,
    VOUT = 9 V, and IOUT = 3 A
  • Mode Selection Between PFM Mode and Forced PWM Mode at Light Load
  • 1-µA Current into VIN Pin during Shutdown
  • Resistor-Programmable Switch Peak Current Limit
  • Adjustable Switching Frequency: 200 kHz to 2.2 MHz
  • Programmable Soft Start
  • Output Overvoltage Protection at 13.2 V
  • Cycle-by-Cycle Overcurrent Protection
  • Thermal Shutdown
  • 4.50-mm × 3.50-mm 20-Pin VQFN Package
  • Create a Custom Design Using the TPS61088-Q1 with the WEBENCH Power Designer

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WEBENCH® Designer TPS61088-Q1

  Min   Max Range
Vin  V 2.7 to 12.0V
Vout  V 4.5 to 12.6V
Iout  A ≤ 10A
Ambient Temp  °C -40 to 130°C


Compare all products in Boost converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61088-Q1 Order now 2.7     12     4.5     12.6     11.4     1     200     2200     0.11     Adjustable Current Limit
Light Load Efficiency
Synchronous Rectification    
90     -40 to 125     Converter     Automotive     VQFN | 20    
LM2623-Q1 Order now 1     14     1.24     14     2.85     1     300     2000     0.11     Enable     90     -40 to 125     Converter     Automotive     WSON | 14    
LM2735-Q1 Order now 2.7     5.5     3     24     2.25     1     520     1600     7     Enable     99     -40 to 125     Converter     Automotive     SOT-23 | 5
WSON | 6    
TPS61085A-Q1 Order now 2.3     6     2.8     18.5     2.6     1     480     1500     0.07     Enable
Light Load Efficiency
UVLO Fixed    
89     -40 to 125     Converter     Automotive     VSSOP | 8    
TPS61087-Q1 Order now 2.5     6     3     18.5     4     1     900     1500     0.075     Enable
Power Good    
90     -40 to 125     Converter     Automotive     VSON | 10    
TPS61093-Q1 Order now 1.6     6     1.7     17     1.1     1     1200     1200     0.9     Enable
Output Discharge    
93     -40 to 125