TPS40000DGQ

Frequency - Switching:	300kHz
Base Part Number:	TPS40000
Supplier Device Package:	10-MSOP-PowerPad
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	94%
Series:	--
Voltage - Supply (Vcc/Vdd):	2.25 V ~ 5.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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TPS40000DGQ Application Field and Working Principle

The TPS40000DGQ is a DC-DC switching controller which is used to control the buck converter to deliver a constant output voltage. Due to its constant output voltage feature, this DC-DC switching controller is suitable for applications that require a stable output. The TPS40000DGQ is designed to work with both the flyback and buck topologies of DC-DC converter. The TPS40000DGQ’s maximum operating voltage is 40V, so it can safely operate up to 40V input. The operating temperature range of this controller is -40°C to 85°C. It also comes with an integrated soft start for better startup performance. The external power supply shall have a maximum output current of 25mA. Preset targets, like a current mode control, are also supported by the TPS40000DGQ. This makes the TPS40000DGQ suitable for demanding applications with strict output voltage requirements. Furthermore, the TPS40000DGQ supports low power shutdown and frequency foldback modes for reducing power consumption during light load conditions. The TPS40000DGQ features an integrated temperature compensation circuit, which combines both hysteretic control and constant on-time control techniques. With these two techniques combined, the TPS40000DGQ is able to maintain a constant output voltage even at varying temperatures. The TPS40000DGQ’s working principle is simple. It receives an input signal and converts it into a pulse width modulation (PWM) signal. This signal is then used to control the switches of a buck converter to regulate the output voltage. In conclusion, the TPS40000DGQ is an excellent choice of DC-DC switching controller for applications that require a stable output voltage. It features an integrated temperature compensation circuit which helps to maintain a constant output voltage even at varying temperatures. Furthermore, it supports current mode control and low power shutdown and frequency foldback modes for better efficiency.

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