NCP1294EDBR2G
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onsemi NCP1294EDBR2G

Manufacturer No:
NCP1294EDBR2G
Manufacturer:
onsemi
Package:
Tape & Reel (TR)
Description:
IC OFFLINE SW MULT TOP 16TSSOP
Delivery:
Payment:
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iso45001
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Product Introduction

Overview

The NCP1294EDBR2G is a fixed frequency voltage mode PWM controller designed by onsemi. This device is optimized for high frequency primary side control operation and is suitable for flyback, boost, or forward converter topologies. It features a low startup current of less than 50 μA and includes various protection mechanisms such as overvoltage, undervoltage, and thermal shutdown. The controller is available in a 16-lead TSSOP surface mount package, making it compact and suitable for a wide range of power management applications.

Key Specifications

Characteristic Min Typ Max Unit
Start Threshold 4.4 4.6 4.7 V
Stop Threshold 3.2 3.8 4.1 V
Reference Voltage 3.2 3.3 3.4 V
Oscillator Frequency 260 273 320 kHz
Gate Drive Current 1.0 - 1.5 A
Thermal Shutdown 125 - 150 °C
Supply Voltage (VCC) 4.7 - 15 V
Switching Frequency - 1000 - kHz

Key Features

  • 1.0 MHz frequency capability
  • Fixed frequency voltage mode operation with feed forward
  • Soft-Start with programmable duration
  • Accurate programmable maximum duty cycle limit
  • 1.0 A sink/source gate drive
  • Programmable pulse-by-pulse overcurrent protection
  • Leading edge current sense blanking
  • Undervoltage and overvoltage protection with programmable hysteresis
  • Bidirectional synchronization
  • Thermal shutdown with hysteresis
  • 3.3 V reference voltage output
  • Pb-free, halogen-free/BFR-free, and RoHS compliant

Applications

  • Flyback, boost, and forward converter topologies
  • Solar power battery chargers
  • Maximum Peak Power Tracking (MPPT) systems
  • Offline power supplies
  • High-frequency power management systems

Q & A

  1. What is the typical switching frequency of the NCP1294EDBR2G?

    The typical switching frequency is 1 MHz (1000 kHz).

  2. What is the startup current of the NCP1294EDBR2G?

    The startup current is less than 50 μA.

  3. What protection mechanisms are included in the NCP1294EDBR2G?

    The device includes undervoltage protection, overvoltage protection, thermal shutdown, and programmable pulse-by-pulse overcurrent protection.

  4. What is the gate drive capability of the NCP1294EDBR2G?

    The gate drive capability is 1.0 A sink/source.

  5. Can the NCP1294EDBR2G be synchronized with external signals?
  6. What is the reference voltage output of the NCP1294EDBR2G?

    The reference voltage output is 3.3 V.

  7. What package types are available for the NCP1294EDBR2G?

    The device is available in SOIC-16 and TSSOP-16 surface mount packages).

  8. Is the NCP1294EDBR2G RoHS compliant?
  9. How does the Soft-Start feature work in the NCP1294EDBR2G?

    The Soft-Start feature gradually releases the clamp on the duty cycle during power-up to eliminate in-rush current, and its duration can be programmed through a capacitance connected to the SS pin).

  10. What is the thermal shutdown temperature of the NCP1294EDBR2G?

    The thermal shutdown temperature is between 125°C and 150°C).

Product Attributes

Output Isolation:Isolated
Internal Switch(s):No
Voltage - Breakdown:- 
Topology:Boost, Flyback, Forward
Voltage - Start Up:4.6 V
Voltage - Supply (Vcc/Vdd):3.8V ~ 15V
Duty Cycle:85%
Frequency - Switching:1MHz
Power (Watts):- 
Fault Protection:Current Limiting, Over Temperature, Over Voltage
Control Features:Frequency Control, Soft Start, Sync
Operating Temperature:-40°C ~ 125°C (TJ)
Package / Case:16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:16-TSSOP
Mounting Type:Surface Mount
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In Stock

$2.04
456

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Same Series
NCP1294EDR2G
NCP1294EDR2G
IC OFFLINE SW MULT TOP 16SOIC

Similar Products

Part Number NCP1294EDBR2G NCP1294EDR2G
Manufacturer onsemi onsemi
Product Status Active Obsolete
Output Isolation Isolated Isolated
Internal Switch(s) No No
Voltage - Breakdown - -
Topology Boost, Flyback, Forward Boost, Flyback, Forward
Voltage - Start Up 4.6 V 4.6 V
Voltage - Supply (Vcc/Vdd) 3.8V ~ 15V 3.8V ~ 15V
Duty Cycle 85% 85%
Frequency - Switching 1MHz 1MHz
Power (Watts) - -
Fault Protection Current Limiting, Over Temperature, Over Voltage Current Limiting, Over Temperature, Over Voltage
Control Features Frequency Control, Soft Start, Sync Frequency Control, Soft Start, Sync
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Package / Case 16-TSSOP (0.173", 4.40mm Width) 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-TSSOP 16-SOIC
Mounting Type Surface Mount Surface Mount

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