Manufacturer Part Number
TPS40021PWP
Manufacturer
Texas Instruments
Introduction
The TPS40021PWP is a highly efficient Step-Down DC DC Switching Controller designed for power management applications.
Product Features and Performance
Switching Controller for Step-Down (Buck) topology
Supports a single output channel
Capable of driving a transistor as output
High frequency switching between 100kHz and 1MHz
Maximum duty cycle of 95%
Incorporates synchronous rectification for improved efficiency
Features clock synchronization
Surface Mount, 16-PowerTSSOP package
Compatible with 2.25V to 5.5V supply voltages
Operational across -40°C to 85°C temperature range
Product Advantages
High-efficiency conversion reduces energy loss
The 95% duty cycle allows nearly full on-time for the switch, ideal for low drop-out conditions
A synchronous rectifier helps in minimizing diode losses
Clock synchronization reduces noise and EMI concerns
Current limit, frequency control, and soft start features protect against system faults
The Power Good signal provides system status for enhanced reliability
Key Technical Parameters
Output Type: Transistor Driver
Function: Step-Down
Output Configuration: Positive
Topology: Buck
Number of Outputs: 1
Output Phases: 1
Voltage - Supply (Vcc/Vdd): 2.25V ~ 5.5V
Frequency - Switching: 100kHz ~ 1MHz
Duty Cycle (Max): 95%
Synchronous Rectifier: Yes
Clock Sync: Yes
Control Features: Current Limit, Enable, Frequency Control, Power Good, Soft Start
Quality and Safety Features
Current limit prevents component damage due to overcurrent conditions
Thermal shutdown feature for over-temperature protection
Built-in soft start reduces inrush current at startup
Under-voltage lockout ensures adequate supply voltage
Compatibility
Surface mount compatible with 16-HTSSOP standard device package
Application Areas
Computer Systems
Telecommunications
Networking Equipment
Server and Storage Systems
Industrial Power Supplies
Product Lifecycle
Status: Last Time Buy
The product is near discontinuation, consider planning for replacements or upgrades
Reasons to Choose This Product
High efficiency and duty cycle suitable for high-performance power systems
Versatile switching frequency suitable for different application needs
Robust protection features ensure long-term reliability
Texas Instruments’ reputation for quality and longevity
Availability of comprehensive technical support and documentation
Compatible with a wide range of supply voltages, enhancing design flexibility
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