TopSwitch GX Family TOP244PN vs TOP244YN vs TOP246YN

The article is about the three types of TOPSwitch-GX Family. TOP244PN, TOP244YN, TOP246YN are those three types. These TOPSwitch are cost-effectively integrating the high voltage power MOSFET, PWM control, fault protection onto a CMOS chip. Its an SMPS chip that converts a current at the control input to the duty cycle. This process is held at the open-drain output of the high voltage power MOSFET. With the extended power range for higher power, it has the main feature of frequency lowered with load for high standby efficiency. It also allows shutdown and wakeup via LAN port.

The operation of the three chips is almost the same the main difference is the package type.

The above pictures are the TOP Switches they do almost the same work but their packaging type is the only difference.

The below circuit shows the working areas of this TOP Switches, these are mainly used as the high power switches in the circuits .

It is clearly seen that the switches are used in the circuit properly with the proper circuit rules such that the circuit hazards can be avoided.

Why this type of TOPSwitch is useful?

• This provides extended power range for higher power applications
• No external heatsink is required for this TOPSwitch up to 34W using the P Package.
• This unique feature cuts the extra cost of implementation in the circuit.
• This device can be externally programmable so it is highly required for any of IoT solutions.
• The line under-voltage (UV detection) and this provides no turn off glitches.
• This device also provides Separate Line and sense and current limit pins on Y/R/F Packages.
• No overvoltage shutdown will occur through these switches.
• This device provides line feed-forward with maximum duty cycle.
• The switches also provide Frequency jittering reduces EMI and EMI filtering costs.
• The circuits also regulate to zero loads without dummy loading.
• The larger thermal hysteresis prevents PC board overheating.

These switches are extremely energy efficient as well.

Causes for the Energy efficiency

• This device consumes extremely low power in case of remote off mode.
• The frequency can be lowered with load for high standby efficiency.
• The devices also provide shutdown or wake up mechanism via the Local Area Network (LAN) input ports.

Pinout Configuration of the TOPSwitches

The simple pinout diagram for the TOPSwitches

Features of TOPSwitches

The various features of TOPSwitches are listed below

• The output power at 125W at 230VAc and 90W at 85VAC to 265VAC in the open frame designs.
• This device provides the extended power range for higher power applications.
• This provides a wider duty cycle for more power and smaller input Capacitor.
• This device regulates zero Load without a dummy load.
• It provides a hysteric thermal shutdown for the automatic recovery.
• The large thermal hysteresis prevents the PC Board overheating which gives it a new security level than others

Conclusion

If you would like to know more about TOPSwitches , please visit at utsource.net