Wide Input Non-Synchronous Buck DC/DC Controller - TPS40200


Wide Input Non-Synchronous Buck DC/DC Controller


Recommended alternative parts

  • TPS40057  -  8.0 to 40V input synchronous buck controller that supports higher output current.
  • TPS40061  -  10 to 55V input synchronous buck controller that supports higher output current
  • TPS5430  -  5.5 to 36V 3A DC/DC converter with integrated MOSFET


The TPS40200 is a flexible, non-synchronous controller with a built-in 200-mA driver for P-channel FETs. The circuit operates with inputs up to 52 V with a power-saving feature that turns off driver current once the external FET has been fully turned on. This feature extends the flexibility of the device, allowing it to operate with an input voltage up to 52 V without dissipating excessive power. The circuit operates with voltage-mode feedback and has feed-forward input voltage compensation that responds instantly to input voltage change. The integral 700-mV reference is trimmed to 2%, providing the means to accurately control low voltages. The TPS40200 is available in an 8-pin SOIC and an 8-pin VSON package and supports many of the features of more complex controllers. Clock frequency, soft-start, and overcurrent limits are each easily programmed by a single, external component. The part has undervoltage lockout, and can be easily synchronized to other controllers or a system clock to satisfy sequencing and/or noise-reduction requirements.


  • Input Voltage Range 4.5 V to 52 V
  • Output Voltage (700 mV to 90% VIN)
  • 200-mA Internal P-channel FET Driver
  • Voltage Feed-Forward Compensation
  • Undervoltage Lockout
  • Programmable Fixed-Frequency (between 35 kHz
    and 500 kHz) Operation
  • Programmable Short-Circuit Protection
  • Hiccup Overcurrent Fault Recovery
  • Programmable Closed-Loop Soft-Start
  • 700 mV 1% Reference Voltage
  • External Synchronization
  • Small 8-Pin SOIC (D) and VSON (DRB) Packages

View more

Parametrics Compare all products in Buck Controller (External Switch)

Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Number of Phases
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Special Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Package Group
TPS40200 TPS40200-EP TPS40200-Q1
4.5    4.5    4.5   
52    52    52   
0.7    0.7    0.7   
46    46    46   
3    3    3   
1    1    1   
1    1    1   
35    35    35   
500    500    500   
1.5    1.5    1.5   
Frequency Synchronization    Frequency Synchronization    Frequency Synchronization   
90    90    95   
-40 to 85    -55 to 125    -40 to 125   
Catalog    HiRel Enhanced Product    Automotive   

Other qualified versions of TPS40200

Version Part Number Definition
High-Temperature TPS40200-HT High-Temperature product for harsh environments
Enhanced Product TPS40200-EP Supports Defense, Aerospace and Medical Applications
Automotive TPS40200-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects