UCC28740QDRQ1
  • Share:

Texas Instruments UCC28740QDRQ1

Manufacturer No:
UCC28740QDRQ1
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC OFFLINE SWITCH FLYBACK 7SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The UCC28740-Q1 is an ultra-low standby, flyback controller designed by Texas Instruments for automotive applications. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards with a temperature grade 1 rating of -40°C to +125°C. It features an internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile to achieve ultra-low standby power without compromising startup time or output transient response. The controller uses an optical coupler for feedback, providing fast transient response to large-load steps and operates in discontinuous conduction mode (DCM) with valley-switching to minimize switching losses.

Key Specifications

Parameter Min Typ Max Unit
Device Temperature Grade -40 +125 °C
HBM Classification Level ±2 kV
CDM Classification Level ±750 V
No-Load Power Capability <10 mW
Voltage Regulation Accuracy ±1%
Current Regulation Accuracy ±5%
Startup Switch Voltage 700 V
Maximum Switching Frequency 100 kHz
Minimum Switching Frequency 170 Hz
Package Type SOIC-7
Body Size (Nominal) 4.90 mm × 3.91 mm

Key Features

  • Qualified for automotive applications with AEC-Q100 qualification.
  • Functional Safety-Capable with documentation available to aid functional safety system design.
  • Less than 10-mW no-load power capability.
  • Enables ±1% voltage regulation and ±5% current regulation across line and load.
  • Internal 700-V startup switch.
  • Maximum switching frequency of 100 kHz for high-power-density charger designs.
  • Resonant-ring valley-switching operation for highest overall efficiency.
  • Frequency dithering to ease EMI compliance.
  • Clamped gate-drive output for MOSFET.
  • Overvoltage, low-line, and overcurrent protection functions.
  • Support for custom design using the WEBENCH Power Designer.

Applications

  • Ultra-low standby power flyback with integrated HV startup and optocoupler feedback.
  • Traction inverter HV to LV backup supply.
  • HVAC compressor HV isolated power supply.
  • PTC heater HV isolated power supply.

Q & A

  1. What is the temperature range for the UCC28740-Q1?

    The device operates within a temperature range of -40°C to +125°C.

  2. What is the maximum switching frequency of the UCC28740-Q1?

    The maximum switching frequency is 100 kHz.

  3. What type of switching mode does the UCC28740-Q1 operate in?

    The controller operates in discontinuous conduction mode (DCM) with valley-switching.

  4. What is the no-load power capability of the UCC28740-Q1?

    The device has a no-load power capability of less than 10 mW.

  5. Does the UCC28740-Q1 have built-in protection features?

    Yes, it includes overvoltage, low-line, and overcurrent protection functions.

  6. How does the UCC28740-Q1 achieve high efficiency?

    The device uses resonant-ring valley-switching operation and modulation of switching frequency and primary current-peak amplitude to achieve high efficiency.

  7. What is the purpose of the internal 700-V startup switch?

    The internal 700-V startup switch provides fast charging of the VDD capacitor during startup.

  8. Is the UCC28740-Q1 suitable for automotive applications?

    Yes, it is qualified for automotive applications and meets AEC-Q100 standards.

  9. Can the UCC28740-Q1 be used for functional safety applications?

    Yes, it is Functional Safety-Capable with available documentation to aid in functional safety system design.

  10. How can I design a custom power supply using the UCC28740-Q1?

    You can create a custom design using the UCC28740-Q1 with the WEBENCH Power Designer.

Product Attributes

Output Isolation:Isolated
Internal Switch(s):No
Voltage - Breakdown:- 
Topology:Flyback
Voltage - Start Up:21 V
Voltage - Supply (Vcc/Vdd):9V ~ 35V
Duty Cycle:- 
Frequency - Switching:170Hz ~ 100kHz
Power (Watts):- 
Fault Protection:Current Limiting, Over Voltage
Control Features:- 
Operating Temperature:-40°C ~ 125°C (TJ)
Package / Case:8-SOIC (0.154", 3.90mm Width), 7 Leads
Supplier Device Package:7-SOIC
Mounting Type:Surface Mount
0 Remaining View Similar

In Stock

$1.70
201

Please send RFQ , we will respond immediately.

Same Series
DD15S2S5WV30/AA
DD15S2S5WV30/AA
CONN D-SUB HD RCPT 15P SLDR CUP
DD44S320000
DD44S320000
CONN D-SUB HD RCPT 44P VERT SLDR
DD15S200E2S/AA
DD15S200E2S/AA
CONN D-SUB HD RCPT 15P SLDR CUP
DD15S20JV3S/AA
DD15S20JV3S/AA
CONN D-SUB HD RCPT 15P SLDR CUP
DD15S20JT2S
DD15S20JT2S
CONN D-SUB HD RCPT 15P SLDR CUP
CBC46W4S10G00/AA
CBC46W4S10G00/AA
CONN D-SUB RCPT 46POS CRIMP
DD26S2S50TX
DD26S2S50TX
CONN D-SUB HD RCPT 26P SLDR CUP
DD26S2S50T2X
DD26S2S50T2X
CONN D-SUB HD RCPT 26P SLDR CUP
DD44S32S600X/AA
DD44S32S600X/AA
CONN D-SUB HD RCPT 44P VERT SLDR
DD44S3200T20
DD44S3200T20
CONN D-SUB HD RCPT 44P VERT SLDR
DD26S20J0X
DD26S20J0X
CONN D-SUB HD RCPT 26P SLDR CUP
DD26S2S5W0X/AA
DD26S2S5W0X/AA
CONN D-SUB HD RCPT 26P SLDR CUP

Similar Products

Part Number UCC28740QDRQ1 UCC28730QDRQ1
Manufacturer Texas Instruments Texas Instruments
Product Status Active Active
Output Isolation Isolated Isolated
Internal Switch(s) No No
Voltage - Breakdown - -
Topology Flyback Flyback
Voltage - Start Up 21 V 21 V
Voltage - Supply (Vcc/Vdd) 9V ~ 35V 9V ~ 35V
Duty Cycle - -
Frequency - Switching 170Hz ~ 100kHz 32Hz ~ 83kHz
Power (Watts) - -
Fault Protection Current Limiting, Over Voltage Current Limiting, Over Voltage
Control Features - -
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Package / Case 8-SOIC (0.154", 3.90mm Width), 7 Leads 8-SOIC (0.154", 3.90mm Width), 7 Leads
Supplier Device Package 7-SOIC 7-SOIC
Mounting Type Surface Mount Surface Mount

Related Product By Categories

NCP1271D65R2G
NCP1271D65R2G
onsemi
IC OFFLINE SWITCH FLYBACK 7SOIC
MC33364DR2G
MC33364DR2G
onsemi
IC OFFLINE SWITCH FLYBACK 16SOIC
NCP1251BSN100T1G
NCP1251BSN100T1G
onsemi
IC OFFLINE SWITCH FLYBACK 6TSOP
VIPER16HD
VIPER16HD
STMicroelectronics
IC OFFLINE SWITCH MULT TOP 16SO
VIPER16HDTR
VIPER16HDTR
STMicroelectronics
IC OFFLINE SWITCH MULT TOP 16SO
NCP1230D165R2G
NCP1230D165R2G
onsemi
IC OFFLINE SWITCH FLYBACK 7SOIC
VIPER50A
VIPER50A
STMicroelectronics
IC OFFLIN CONV FLBACK 5PENTAWATT
MC33364D1
MC33364D1
onsemi
IC OFFLINE SWITCH FLYBACK 8SOIC
MC33363ADWG
MC33363ADWG
onsemi
IC OFFLINE SW MULT TOP 16SOIC
VIPER100-E
VIPER100-E
STMicroelectronics
IC OFFLIN CONV FLBACK 5PENTAWATT
L5991
L5991
STMicroelectronics
IC OFFLINE SWITCH MULT TOP 16DIP
UCC2813DTR-4G4
UCC2813DTR-4G4
Texas Instruments
IC OFFLINE SWITCH MULT TOP 8SOIC

Related Product By Brand

TLV2548QDWRG4
TLV2548QDWRG4
Texas Instruments
IC ADC 12BIT SAR 20SOIC
DAC5573IPWRG4
DAC5573IPWRG4
Texas Instruments
IC DAC 8BIT V-OUT 16TSSOP
PCF8574AN
PCF8574AN
Texas Instruments
IC I/O EXPANDER I2C 8B 16DIP
SN65LVPE501RGER
SN65LVPE501RGER
Texas Instruments
IC REDRIVER PCIE 2CH 24VQFN
LM139J/SCA
LM139J/SCA
Texas Instruments
QUAD DIFFERENTIAL COMPARATOR
SN74AHC1G32DCKR
SN74AHC1G32DCKR
Texas Instruments
IC GATE OR 1CH 2-INP SC70-5
TLV809EA29DBZR
TLV809EA29DBZR
Texas Instruments
IC SUPERVISOR 1 CHANNEL SOT23-3
TL431ILPR5
TL431ILPR5
Texas Instruments
VOLTAGE REFERENCE
LM20242MHX/NOPB
LM20242MHX/NOPB
Texas Instruments
IC REG BUCK ADJ 2A 20HTSSOP
REG1117A-1.8/2K5
REG1117A-1.8/2K5
Texas Instruments
IC REG LINEAR 1.8V 1A SOT223-4
TPS7A0333PDBVR
TPS7A0333PDBVR
Texas Instruments
IC REG LINEAR 3.3V 200MA SOT23-5
TPS70928QDRVRQ1
TPS70928QDRVRQ1
Texas Instruments
IC REG LINEAR 2.8V 150MA 6WSON