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TI UCC28740QDRQ1RoHS

Manufacturer
TI
MPN
UCC28740QDRQ1
LCSC Part #
C2869875
Packaging
SOIC-7
Customer #
Key Attributes
Ultra-low standby power consumption flyback controller with integrated high-voltage startup function and optocoupler feedback function
Datasheetpdf iconTI UCC28740QDRQ1
In-Stock: 250
250 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
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QtyUnit PriceTotal Amount
1+$ 1.6359$ 1.64
10+$ 1.4408$ 14.41
30+$ 1.3026$ 39.08
100+$ 1.1774$ 117.74
500+$ 1.1188$ 559.40
1,000+$ 1.0961$ 1096.10
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerTI
PackagingSOIC-7
Operating Temperature-40℃~+125℃
Output Current-
Frequency - Switching100kHz
Pd - Power Dissipation-
Voltage - Breakdown700V
Voltage - Supply9V~35V
FeaturesHigh voltage direct start;Quasi-resonant/valley switching;EMI optimization (spread spectrum);Leading edge blanking;Under-voltage lockout;Constant Voltage (CV);Over Voltage Protection;Over Current Protection;Overtemperature protection (OTP)
TopologyFlyback
Output Voltage-
Duty Cycle(Max)-
Working ModeDCM
Feedback SystemSecondary-Side Feedback
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Introduction

AI Translation

The UCC28740-Q1 isolated flyback power supply controller can use an optocoupler to regulate the output, providing a fast transient response to large load steps. It features an internal 700V start-up switch that can dynamically control the operating state and customize the modulation profile. It supports ultra-low standby power consumption without affecting the start-up time or output transient response. The control algorithm in the UCC28740-Q1 enables the operating efficiency to meet or exceed applicable standards. The driver output is connected to a MOSFET power switch. The discontinuous conduction mode (DCM) with valley switching reduces switching losses. The modulation of the switching frequency and the peak amplitude of the primary current (FM and AM) maintain high conversion efficiency across the entire load and line range. This controller has a maximum switching frequency of 100kHz and maintains control over the peak primary current in the transformer at all times. The protection features help suppress stress components on both the primary and secondary sides. A minimum switching frequency of 170Hz easily achieves a no-load power consumption of less than 10mW.

Features

AI Translation
  • Meets automotive application requirements with the following AEC-Q100 compliant characteristics:
  • Device temperature grade 1: -40°C to +125°C
  • Device HBM classification level 2: ±2kV
  • Device CDM classification level C4B: ±750V
  • No-load power consumption below 10mW
  • ±1% voltage regulation and ±5% current regulation across line and load range
  • 700V startup switch
  • 100kHz maximum switching frequency for high power density charger design
  • Resonant valley switching operation mode for maximum overall efficiency
  • Frequency dithering for easy EMI compliance
  • MOSFET clamp gate drive output
  • Overvoltage, undervoltage line, and overcurrent protection
  • Create custom designs using UCC28740-Q1 with WEBENCH Power Designer

Applications

AI Translation
  • Ultra-low standby power flyback controller with integrated high-voltage startup and optocoupler feedback
  • Traction inverter high-voltage to low-voltage standby power supply
  • HVAC compressor high-voltage isolated power supply
  • PTC heater high-voltage isolated power supply