Overview
The TOP271EG is an integrated off-line switcher from Power Integrations, incorporating EcoSmart technology for highly efficient power supplies. This device integrates a 725 V power MOSFET, high voltage switched current source, multi-mode PWM control, oscillator, thermal shutdown circuit, fault protection, and other control circuitry onto a single monolithic chip. It is designed to provide energy efficiency over the entire load range, making it suitable for a variety of power supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Output Power (Max) - Open Frame, 230V | 244 W |
| Output Power (Max) - Enclosed, 230V | 177 W |
| Output Power (Max) - Enclosed, Universal Input | 118 W |
| Output Power (Max) - Open Frame, Universal Input | 177 W |
| Switching Frequency (max) | 132 kHz |
| Breakdown Voltage | 725 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| Auto-Restart Threshold | 5.8 |
| IC Package | eSIP-7C |
| Internal Switch | Yes |
| Mounting Type | Through Hole |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
Key Features
- EcoSmart- Energy Efficient: Energy efficient over the entire load range, with no-load consumption below 70 mW at 230 VAC and up to 750 mW standby output power for 1 W input at 230 VAC.
- High Design Flexibility for Low System Cost: Multi-mode PWM control maximizes efficiency at all loads, 132 kHz operation reduces transformer and power supply size, and frequency jittering reduces EMI filter cost.
- Extensive Protection Features: Auto-restart limits power delivery to <3% during overload faults, output short-circuit protection (SCP), output overcurrent protection (OCP), output overload protection (OPP), output overvoltage protection (OVP), and accurate thermal shutdown with large hysteresis (OTP).
- Advanced Package Options: Available in eDIP-12, eSIP-7C, and eSOP-12 packages, each offering different thermal and mounting advantages.
- Control and Protection Features: Selectable current limit, frequency jittering, soft start, auto-restart/latching fault response, on/off control, and remote shutdown capabilities.
Applications
The TOP271EG is suitable for a wide range of power supply applications, including:
- High-efficiency power supplies for consumer electronics.
- Power supplies for industrial and medical devices.
- LED lighting power supplies.
- Set-top boxes and other home entertainment systems.
- Printers and other office equipment.
Q & A
- What is the maximum output power of the TOP271EG in an open frame configuration at 230 VAC?
244 W.
- What is the switching frequency of the TOP271EG?
Up to 132 kHz.
- What are the key protection features of the TOP271EG?
Auto-restart, output short-circuit protection (SCP), output overcurrent protection (OCP), output overload protection (OPP), output overvoltage protection (OVP), and thermal shutdown.
- What package options are available for the TOP271EG?
eDIP-12, eSIP-7C, and eSOP-12 packages.
- What is the input voltage range for the TOP271EG?
85 V to 265 V.
- How does the TOP271EG reduce EMI?
Through frequency jittering in full frequency mode at high-load conditions.
- What is the operating temperature range for the TOP271EG?
-40 °C to 150 °C.
- Does the TOP271EG support soft-start functionality?
Yes, it includes a fully integrated soft-start feature.
- What topology does the TOP271EG use?
Flyback topology.
- How does the EcoSmart technology benefit the TOP271EG?
EcoSmart technology ensures energy efficiency over the entire load range, achieving low no-load consumption and high standby output power.
