UCC28C44 BiCMOS 低功耗电流模式 PWM 控制器 | 德州仪器 TI.com.cn

UCC28C44 (正在供货) BiCMOS 低功耗电流模式 PWM 控制器

BiCMOS 低功耗电流模式 PWM 控制器 - UCC28C44
数据表
 

描述

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.

特性

  • 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

WEBENCH® Designer UCC28C44

 AC  DC  
AC 频率  60 Hz  50 Hz
Use Isolated Output?
  最小   最大 范围
VinRMS  V 16.50 ç»™拟 2000.00V
输出电压  V 3.3 ç»™拟 1000V
输出电流  A ≤ 100A
环境温度  °C -40 ç»™拟 105°C

参数

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Part number 立即下单 Topology Control method VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) UVLO thresholds on/off (V) Duty cycle (Max) (%) Gate drive (Typ) (A) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
UCC28C44 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     14.5     18     1000     14.5/9     50     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Programmable Max Duty Cycle    
Catalog     -40 to 105
-40 to 85    
PDIP | 8
SOIC | 8
VSSOP | 8    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
UCC28C40 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     7     18     1000     7/6.6     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Programmable Max Duty Cycle    
Catalog     -40 to 105
-40 to 85    
PDIP | 8
SOIC | 8
VSSOP | 8    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
UCC28C41 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     7     18     1000     7/6.6     50     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Programmable Max Duty Cycle    
Catalog     -40 to 105     SOIC | 8
VSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
UCC28C42 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     14.5     18     1000     14.5/9     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Programmable Max Duty Cycle    
Catalog     -40 to 105     PDIP | 8
SOIC | 8
VSSOP | 8    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
UCC28C43 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     8.4     18     1000     8.4/7.6     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Programmable Max Duty Cycle    
Catalog     -40 to 105     PDIP | 8
SOIC | 8
VSSOP | 8    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
UCC28C45 立即下单 Boost
Buck
Buck-Boost
Flyback
Forward    
Peak Current Mode     8.4     18     1000     8.4/7.6     50