Offline Regulators | FSQ0765RS

650V Integrated Power Switch with Quasi-Resonant Operation for 70Watt offline flyback converters

Obsolete

Datasheet

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Overview

A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant operation and Alternating Valley Switching (AVS). The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading- Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for a loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSQ-series can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform for cost-effective designs of quasi-resonant switching flyback converters.

  • LCD TV
  • LED TV
  • LCD Monitor
  • DVD/Set Top Boxes

  • Optimized for Quasi-Resonant Converters (QRC)
  • Low EMI through Variable Frequency Control and AVS (Alternating Valley Switching)
  • High-Efficiency through Minimum Voltage Switching
  • Narrow Frequency Variation Range over Wide Load and Input Voltage Variation
  • Advanced Burst-Mode Operation for Low Standby Power Consumption
  • Simple Scheme for Sync Voltage Detection
  • Pulse-by-Pulse Current Limit
  • Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Internal
  • Thermal Shutdown (TSD) with Hysteresis,
  • Output Short Protection (OSP)
  • Under-Voltage Lockout (UVLO) with Hysteresis
  • Internal Startup Circuit
  • Internal High-Voltage Sense FET (650 V)
  • Built-in Soft-Start (17.5 ms)

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fsw Typ (kHz)

fJitter Typ (%)

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Reference Price

FSQ0765RSUDTU

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Obsolete

CAD Model

Pb

A

H

P

TO-220-6 FullPak

340BP

NA

0

TUBE

400

N

Current Mode

Variable

-

-

1.3

650

2500

Yes

-

Yes

Yes

-

-

No

Price N/A

More Details

FSQ0765RSWDTU

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Obsolete

CAD Model

Pb

A

H

P

TO-220-6

340BG

NA

0

TUBE

400

N

Current Mode

Variable

-

-

1.3

650

2500

Yes

-

Yes

Yes

-

-

No

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: FSQ0765RSUDTU

Equivalent to wafer fab process: 3D,64

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

3D,64

0

63841486

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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