产品详细信息

Topology Flyback, Boost, Buck, SEPIC, Forward Duty cycle (Max) (%) 100 Supply voltage (Max) (V) 18 UVLO thresholds on/off (V) 8.4/7.6 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Programmable Max Duty Cycle Operating temperature range (C) -40 to 105 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
Topology Flyback, Boost, Buck, SEPIC, Forward Duty cycle (Max) (%) 100 Supply voltage (Max) (V) 18 UVLO thresholds on/off (V) 8.4/7.6 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Programmable Max Duty Cycle Operating temperature range (C) -40 to 105 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Enhanced Replacement for UCx84x and UCx84xA Family With Pin-to-Pin Compatibility
  • 1-MHz Operation
  • 50-µA Standby Current, 100-µA Maximum
  • Low Operating Current of 2.3 mA at 52 kHz
  • Fast 35-ns Cycle-by-Cycle Over-Current Limiting
  • ±1-A Peak Output Current
  • Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times
  • ±1% Initial Trimmed 2.5-V Error Amplifier Reference
  • Trimmed Oscillator Discharge Current
  • New Undervoltage Lockout Versions
  • VSSOP-8 Package Minimizes Board Space
  • Enhanced Replacement for UCx84x and UCx84xA Family With Pin-to-Pin Compatibility
  • 1-MHz Operation
  • 50-µA Standby Current, 100-µA Maximum
  • Low Operating Current of 2.3 mA at 52 kHz
  • Fast 35-ns Cycle-by-Cycle Over-Current Limiting
  • ±1-A Peak Output Current
  • Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times
  • ±1% Initial Trimmed 2.5-V Error Amplifier Reference
  • Trimmed Oscillator Discharge Current
  • New Undervoltage Lockout Versions
  • VSSOP-8 Package Minimizes Board Space

UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency. In addition, lower startup voltage versions of 7 V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 105°C, and the UCC38C4x series is specified for operation from 0°C to 70°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCx84x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35 ns for superior overload protection at the power switch, and a ±1-A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCC38C4x family is offered in 8-pin VSSOP (DGK), 8-pin SOIC (D), and 8-pin PDIP (P) packages.

UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency. In addition, lower startup voltage versions of 7 V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 105°C, and the UCC38C4x series is specified for operation from 0°C to 70°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCx84x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35 ns for superior overload protection at the power switch, and a ±1-A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCC38C4x family is offered in 8-pin VSSOP (DGK), 8-pin SOIC (D), and 8-pin PDIP (P) packages.

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评估板

UCC28C56EVM-066 — 适用于 UCC28C56H-Q1 初级侧控制(使用 AUX 绕组)反激式稳压器的评估模块

UCC28C56EVM-066 是一款适用于 EV 和 HEV 汽车动力总成的高效初级侧控制(使用 AUX 绕组)反激式辅助电源。该设计可为 800V 电池系统提供 15.2VTYP 40W 输出。在 125V 至 1000V 的输入电压范围内提供 40W 功率。确切输出电压取决于负载。该设计输入为 40V 至 125V,可提供功率为 20W。该 EVM 采用 1700V 碳化硅 (SiC) MOSFET,非常适合 800V 电池系统。

用户指南: PDF | HTML
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仿真模型

UCC28C43 PSpice Transient Model

SLUM033.ZIP (101 KB) - PSpice Model
仿真模型

UCC28C43 TINA-TI Start-Up Reference Design

SLUM176.TSC (204 KB) - TINA-TI Reference Design
仿真模型

UCC28C43 TINA-TI Steady-State Reference Design

SLUM177.TSC (182 KB) - TINA-TI Reference Design
仿真模型

UCC28C43 TINA-TI Start-Up Spice Model

SLUM178.ZIP (10 KB) - TINA-TI Spice Model
仿真模型

UCC28C43 TINA-TI Steady-State Spice Model

SLUM179.ZIP (10 KB) - TINA-TI Spice Model
仿真模型

UCCx8C43 Unencrypted PSpice Transient Model

SLUM521.ZIP (4 KB) - PSpice Model
参考设计

TIDA-01505 — 支持可再生制动测试的汽车类 40V 至 1kV 输入反激式参考设计

该适用于汽车辅助电路的电源参考设计可以通过 40V 至 1kV 的宽输入范围和高达 1.2kV 的瞬态电压生成 15V、4A 输出。该设计非常适合 800V 电池驱动的混合动力电动汽车 (HEV) 或电动汽车 (EV) 牵引逆变器系统。40V 最低输入电压支持来自牵引电机的可再生制动的功能安全测试。该参考设计实现了一款碳化硅 (SiC) MOSFET,该器件具有用于降低开关损耗的高阻断电压和低栅极电荷等特性。非隔离式电平转换器支持通过嵌入在反激式控制器中的 Si MOSFET 驱动器驱动 SiC MOSFET。该板包含两个反激式转换器型号:初级侧调节 (PSR) (...)
原理图: PDF
参考设计

PMP10834 — 85-265V 输入、5V/1A 输出、AC-DC Fly-Buck 转换器参考设计

PMP10834RevA 参考设计是极具热效率的紧凑型设计,旨在对广泛的交流输入(85VAC 至 265VAC)进行降压。此非隔离式 Flybuck 设计包含具有光耦合器反馈的 UCC28C42 PWM,以提供 1% 输出电压调节。所有电路组件(包括磁体)都是标准器件。
原理图: PDF
封装 引脚数 下载
PDIP (P) 8 了解详情
SOIC (D) 8 了解详情
VSSOP (DGK) 8 了解详情

订购和质量

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  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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