DPA423GN-TL

DPA423GN-TL is a DPA-switch family highly integrated DC to DC converter IC for power over Ethernet & telecom applications. The DPA-Switch™ IC family is a highly integrated solution for DC-DC conversion applications with 16-75VDC input. DPA-switch uses the same proven topology as TOPSwitch™, cost effectively integrating a power MOSFET, PWM control, fault protection and other control circuitry onto a single CMOS chip. High performance features are enabled with three user configurable pins. Hysteretic thermal shutdown is also provided. In addition, all critical parameters (i.e. current limit, frequency, PWM gain) have tight temperature and absolute tolerance, to simplify design and reduce system cost. Typical applications include PoE applications, VoIP phones, WLAN, security cameras, telco central office equipment: xDSL, ISDN, PABX, distributed power architectures (24V/48V bus) and industrial controls.

• Eliminates up to 50 external components–saves space, cost
• Integrates 220V high frequency MOSFET, PWM control
• Built-in auto-restart for output overload/open loop protection
• Pin selectable 300/400KHz fixed frequency, wide input (line) voltage range: 16-75VDC
• Externally programmable current limit, source connected tab reduces EMI
• Line undervoltage (UV) detection: meets ETSI standards, line overvoltage (OV) shutdown protection
• UV/OV limits gate drive voltage for synchronous rectification
• Fully integrated soft-start for minimum stress/overshoot, supports forward or flyback topology
• Extremely low consumption at no-load, cycle skipping at light load for high standby efficiency
• Plastic surface mount DIP package