Datasheet > UC381QTR

UC381QTR

更新时间： 2024-11-18 20:16:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
9页	474K
描述
UC381QTR

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

UC381QTR 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Is Samacsys：	N	Base Number Matches：	1

UC381QTR 数据手册

UC1861-1868

UC2861-2868

UC3861-3868

Resonant-Mode Power Supply Controllers

FEATURES

DESCRIPTION

• Controls Zero Current Switched (ZCS) The UC1861-1868 family of ICs is optimized for the control of Zero Cur-

or Zero Voltage Switched (ZVS)

Quasi-Resonant Converters

rent Switched and Zero Voltage Switched quasi-resonant converters. Dif-

ferences between members of this device family result from the various

combinations of UVLO thresholds and output options. Additionally, the

one-shot pulse steering logic is configured to program either on-time for

ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-

1864).

• Zero-Crossing Terminated One-Shot

Timer

• Precision 1%, Soft-Started 5V

Reference

The primary control blocks implemented include an error amplifier to com-

pensate the overall system loop and to drive a voltage controlled oscillator

(VCO), featuring programmable minimum and maximum frequencies. Trig-

gered by the VCO, the one-shot generates pulses of a programmed maxi-

mum width, which can be modulated by the Zero Detection comparator.

This circuit facilitates “true” zero current or voltage switching over various

line, load, and temperature changes, and is also able to accommodate the

resonant components' initial tolerances.

• Programmable Restart Delay

Following Fault

• Voltage-Controlled Oscillator (VCO)

with Programmable Minimum and

Maximum Frequencies from 10kHz to

1MHz

• Low Start-Up Current (150µA typical)

• Dual 1 Amp Peak FET Drivers

Under-Voltage Lockout is incorporated to facilitate safe starts upon

power-up. The supply current during the under-voltage lockout period is

typically less than 150µA, and the outputs are actively forced to the low

• UVLO Option for Off-Line or DC/DC

Applications

state.

(continued)

Device

UVLO

1861

1862

1863

36014

1864

36014

1865

1866

1867

36014

1868

36014

16.5/10.5

Alternating

Off Time

16.5/10.5

Parallel

Off Time

16.5/10.5

Alternating

On Time

16.5/10.5

Parallel

On Time

Outputs

“Fixed”

Alternating

Off Time

Parallel

Off Time

Alternating

On Time

Parallel

On Time

BLOCK DIAGRAM

UDG-92018

Pin numbers refer to the J and N packages.

10/98

12 3 4 5 6 7...9

中文翻译

下载PDF

与UC381QTR相关器件

型号	品牌	获取价格	描述	数据表
UC382	TI	获取价格	FAST LDO LINEAR REGULATOR
UC382-1	TI	获取价格	FAST LDO LINEAR REGULATOR
UC382-2	TI	获取价格	FAST LDO LINEAR REGULATOR
UC3823	TI	获取价格	High Speed PWM Controller
UC3823	UTC	获取价格	low cost power-saving mode pwm controller for...
UC382-3	TI	获取价格	FAST LDO LINEAR REGULATOR
UC3823A	TI	获取价格	High Speed PWM Controller
UC3823A-	TI	获取价格	HIGH-SPEED PWM CONTROLLER
UC3823ADW	TI	获取价格	High Speed PWM Controller
UC3823ADWG4	TI	获取价格	High Speed PWM Controller