UCC38C41

Name: UCC38C41
Brand: TI
SKU: UCC38C41
Price: 0.24 USD

활성

상업용, 20V, 저전력 전류 모드 PWM 컨트롤러, 7V/6.6V UVLO, 50% 듀티 사이클

지금 주문

데이터 시트

document-pdfAcrobat UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller datasheet (Rev. I) (영어) PDF | HTML

UCC38C41

활성

데이터 시트

지금 주문

제품 상세 정보

Vin (max) (V)

18

Operating temperature range (°C)

0 to 85

Control mode

Current

Topology

Boost, Buck, Flyback, Forward, SEPIC

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle

Duty cycle (max) (%)

50

Vin (max) (V)

18

Operating temperature range (°C)

0 to 85

Control mode

Current

Topology

Boost, Buck, Flyback, Forward, SEPIC

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle

Duty cycle (max) (%)

50

SOIC (D)

8

29.4 mm² 4.9 x 6

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
Operating frequency: 1MHz Maximum
50µA Startup Current, 100µA Maximum
Low operating current: 2.3mA (at fOSC = 52kHz)
Fast, cycle-by-cycle overcurrent limiting: 35ns
Peak driving current: ±1A. Rail-to-rail output:
- 25ns rise time
- 20ns fall time
±1% accurate 2.5V error amplifier reference
Trimmed oscillator discharge current
Undervoltage lockout protections
VSSOP-8 package minimizes board space

Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
Operating frequency: 1MHz Maximum
50µA Startup Current, 100µA Maximum
Low operating current: 2.3mA (at fOSC = 52kHz)
Fast, cycle-by-cycle overcurrent limiting: 35ns
Peak driving current: ±1A. Rail-to-rail output:
- 25ns rise time
- 20ns fall time
±1% accurate 2.5V error amplifier reference
Trimmed oscillator discharge current
Undervoltage lockout protections
VSSOP-8 package minimizes board space

The 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 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°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 1MHz, 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 UCCx8C4x 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 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

The 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 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°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 1MHz, 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 UCCx8C4x 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 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

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관심 가지실만한 유사 제품

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UCC28C41

활성

산업용, 20V, 저전력 전류 모드 PWM 컨트롤러, 7V/6.6V UVLO, 50% 듀티 사이클 Wider temperature range

기술 자료

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15개 모두 보기

	유형	직함		날짜
*	Data sheet	UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller datasheet (Rev. I)	PDF \| HTML	2024/06/13
	Functional safety information	UCCx8C4x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	2022/09/12
	Application note	Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A)	PDF \| HTML	2021/06/11
	Application note	Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)		2019/03/12
	Selection guide	Power Management Guide 2018 (Rev. R)		2018/06/25
	Application note	UCC38C44 12-V Isolated Bias Supply (Rev. A)		2008/10/09
	User guide	UCC38C42 30-W Synchronous Buck Converter Reference Design		2003/02/04
	Application note	UCC38C42 25-W Forward Converter		2002/09/06
	Application note	UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers		2002/02/07
	More literature	Seminar 300 Topic 8 - Switching Power Supply Design Review		2001/02/15
	More literature	Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors		2001/02/15
	More literature	Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC		2001/02/15
	Application note	DN-30 Programmable Electronic Circuit Breaker		1999/09/05
	Application note	DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802		1999/09/05
	Application note	U-111, Practical Considerations in Current Mode Power Supplies		1999/09/05

설계 및 개발

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평가 보드

UCC28C56EVM-066 — (보조 권선을 사용한) 1차측 컨트롤 플라이백 레귤레이터용 UCC28C56H-Q1 평가 모듈

UCC28C56EVM-066은 고도로 효율적인 EV 및 HEV 오토모티브 파워 트레인용 1차측 제어(보조 권선 사용) 플라이백 보조 전원 공급 장치입니다. 이 설계는 800V 배터리 시스템에 15.2V_TYP, 40W 출력을 제공합니다. 125V~1,000V의 입력 전압 범위에서 40W를 제공합니다. 정확한 출력 전압은 부하에 따라 다릅니다. 이 설계는 40V~125V 입력 범위에서 20W를 공급합니다. 이 EVM은 1,700V SiC(실리콘 카바이드) MOSFET을 사용하기 때문에 800V 배터리 시스템에 이상적입니다.

사용 설명서: PDF | HTML