Offline Regulators | FSQ510

700V Integrated Power Switch with Valley Switching control for 6Watt offline flyback converters

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Overview

A Valley Switching Converter (VSC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ510 (H or M) is an integrated valley switching pulse width modulation (VS-PWM) controller and SenseFET specifically designed for offline switch-mode power supplies (SMPS) for valley switching with minimal external components. The VS-PWM controller includes an integrated oscillator, under-voltage lockout (UVLO), leading-edge blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with discrete MOSFET and PWM controller solutions, the FSQ510 (H or M) can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a platform for cost-effective designs of a valley switching flyback converters.

  • LCD TV

  • Uses a LDMOS Integrated Power Switch
  • Optimized for Valley Switching Converter (VSC)
  • Low EMI through Variable Frequency Control and Inherent Frequency Modulation
  • High Efficiency through Minimum Drain Voltage Switching
  • Extended Valley Switching for Wide Load Ranges
  • Small Frequency Variation for Wide Load Ranges
  • Advanced Burst-Mode Operation for Low Standby Power Consumption
  • Pulse-by-Pulse Current Limit
  • Protection Functions: Overload Protection (OLP), Internal Thermal Shutdown (TSD) with Hysteresis
  • Under Voltage Lockout (UVLO) with Hysteresis
  • Internal Startup Circuit
  • Internal High-Voltage SenseFET: 700V
  • Built-in Soft Start: 5ms

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fsw Typ (kHz)

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FSQ510

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Obsolete

CAD Model

Pb

A

H

P

PDIP-7

626A-01

NA

0

TUBE

3000

N

Current Mode

Variable

-

-

28

700

320

Yes

-

Yes

Yes

-

-

No

Price N/A

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FSQ510MX

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Last Shipments

CAD Model

Pb

A

H

P

PDIP7 MINUS PIN 6 GW

707AA

3

250

REEL

1000

N

Current Mode

Variable

-

-

28

700

320

Yes

-

Yes

Yes

-

-

No

Price N/A

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Reliability Data

Die Related Summary Data

Device: FSQ510

Equivalent to wafer fab process: 64

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

64

2

525809712

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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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