Allicdata Part #: | TOP233GN-ND |
Manufacturer Part#: |
TOP233GN |
Price: | $ 1.44 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Power Integrations |
Short Description: | IC OFFLINE SWIT OVP UVLO 8SMD |
More Detail: | Converter Offline Flyback Topology 66kHz ~ 132kHz ... |
DataSheet: | TOP233GN Datasheet/PDF |
Quantity: | 1000 |
250 +: | $ 1.30665 |
Duty Cycle: | 78% |
Mounting Type: | Surface Mount |
Supplier Device Package: | SMD-8B |
Package / Case: | 8-SMD (7 Leads), Gull Wing |
Operating Temperature: | -40°C ~ 150°C (TJ) |
Control Features: | Frequency Control |
Fault Protection: | Current Limiting, Over Temperature, Over Voltage |
Power (Watts): | 25W |
Frequency - Switching: | 66kHz ~ 132kHz |
Series: | TOPSwitch®-FX |
Voltage - Supply (Vcc/Vdd): | -- |
Topology: | Flyback |
Voltage - Breakdown: | 700V |
Internal Switch(s): | Yes |
Output Isolation: | Isolated |
Part Status: | Not For New Designs |
Packaging: | Tube |
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The TOP233GN is a fixed-frequency PWM controller integrated with over/under voltage and input/output current sensing. This PMIC (Power Management Integrated Circuit) comprises of an AC DC converter, an offline switcher, and an internal temperature shut down (TDS) unit. It is specifically designed for ac to dc conversion requiring high efficiency, low cost, and good regulation accuracy. The TOP233GN features a low-cost, low-noise design and provides superior efficiency for a wide range of A/C and D/C input voltages. It includes hysteretic, self-biasing controlled current techniques to deliver excellent load and line regulation over a wide operating range.
The TOP233GN has a variety of useful applications, including AC-DC converters, DC-DC converters, and offline switchers. One of its main advantages is its ability to integrate programmable under/overvoltage protection, along with allowing input/output current sensing without the need for an external opamp. It is also capable of providing accurate accuracy and control over input/output current and regulation over the full bandwidth of the AC input.
In addition, this PMIC has the capacity to work in burst mode for improved efficiency when the desired output power is significantly lower than the available input power. Further to this, the TOP233GN is specifically designed for applications with limited AC input power, as it has a detection circuit to sense minimum ac line voltage.
The working principle of the TOP233GN is based on a hysteretic PWM LED controller. When the current sensing voltage exceeds the hysteresis level voltage, the output switches from its original state. This cycle is repeated at a frequency determined by the external resistor connected to the oscillator circuit. The current peak value and the current load can be adjusted by the external resistor values.
The TOP233GN is designed to achieve maximum efficiency over a wide range of DC input/output voltages. The current sensing section provides a linear current feedback, which can be used to adjust output voltage and makes the PMIC suitable for activities such as UPS and solar cell inverters. Further to this, the overvoltage feature can be used to protect the system from overvoltage conditions and undervoltage protection circuits are included to prevent the system from damage due to low input voltage.
In conclusion, the TOP233GN is a versatile PMIC offering an integrated AC DC converter, an offline switcher, and an integrated TDS unit. Its wide applications and its robust working principle make it an excellent choice for a variety of AC/DC converter applications. Its current sensing capability and the inclusion of external resistors to regulate the PWM LED Controller give it an edge over other PMICs in terms of its overall performance.
The specific data is subject to PDF, and the above content is for reference
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