TI's TPS65580 is an advanced three-terminal output D-CAP2 mode synchronous buck converter chip that enables system designers to provide cost-effective, low-cost devices when providing power regulators for a wide range of end devices Low standby current solution. The TPS65580 chip master loop uses D-CAP2 mode control to provide efficient and fast transient response without external compensation.
The TPS65580 is suitable for low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, as well as ultra low ESR ceramic capacitors. The device provides convenient and fast operation with an input voltage of 4.5V~18V.
The TPS65580 is available in a 4.4mm & TImes; 6.5mm 20-pin TSSOP (PWP) with an operating temperature range of -40°C to 85°C.
Figure 1 TPS65580 internal block diagram
Figure 2 Schematic diagram of the TPS65580 scheme
TPS65580 main features
• Advanced D-CAP2 control mode
• Fast transient response
• Loop compensation eliminates the need for external parts
• Compatible with ceramic output capacitors
• Wide input voltage range: 4.5V~18V
• Output voltage range: 0.76V~7.0V
• Efficiently integrated FET optimized low duty cycle applications
• 160MΩ (high voltage side) and 130MΩ (low end) at 2.5A
• 250MΩ (high voltage side) and 230mΩ (low end) at 1.5A
• High initial reference accuracy
Table 1 TPS65580 program material list
Figure 3 PCB component layout (1)
• Low side RDS (on) lossless current sensing
• Fixed 1.2ms soft start
• No outflow pre-bias soft start
• 700kHz switching frequency
• Cycle-by-cycle overcurrent limit control
• OCL, OVP, UVP, UVLO, TSD protection
• Snoring timer overload protection
• Good power supply
• Integrated boost PMOS adaptive gate driver switch
• OCP constant, thermal compensation RDS (ON) (4000ppm / °)
• 20-pin HTSSOP
TPS65580 application
• Low power system load point adjustment for a wide range of applications
• Digital TV power supply
• Network home terminal
• Digital Set Top Box (STB)
•DVD player/recorder
• Game consoles and other
TPS65580 solution
Texas Instruments' TPS65580EVM-575 Evaluation Module (EVM) is a fully assembled and tested circuit for evaluating the TPS65580 synchronous buck converter. The EVM includes an input-output synchronous buck converter rated at 12 V with three output channels. Output channel 1 is 3.3V, 1.5A, channel 2 is 1.2V, 2.0A, and channel 3 is 1.5V, 1.5A. Its input voltage range is 4.5V~18V. TPS65580 can control each output channel and a good combination Power function. The TPS65580 features DCAP2 control with a pseudo fixed switching frequency of 700kHz for fast transient response (smaller output capacitance).
Figure 4 PCB component layout (2)
TPS65580 reference program features
• Synchronous Buck Converter
• 3 outputs
• Internal slow start
• Wide input voltage up to 18V
• Integrated FET
Oil Tempered Spring Steel Wire
Oil Tempered SS Wire for Industrial doors,Spring steel wire in oil tempered type,High carbon spring steel wire in 21mm,Cold drawn spring steel wire in 8mm
Yixing Steel Pole International Trading Co., Ltd , https://www.yx-steelpole.com