UC3878J

更新时间： 2024-11-21 04:27:07

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
19页	740K
描述
Phase Shift Resonant Controller

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中文翻译

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技术参数
数据手册

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UC3878J 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.92
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	CURRENT-MODE	控制技术：	PHASE-SHIFT CONTROL
最大输入电压：	20 V	最小输入电压：	11 V
标称输入电压：	12 V	JESD-30 代码：	R-CDIP-T20
功能数量：	1	端子数量：	20
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	3 A	封装主体材料：	CERAMIC, METAL-SEALED COFIRED
封装代码：	DIP	封装等效代码：	DIP20,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
子类别：	Switching Regulator or Controllers	表面贴装：	NO
切换器配置：	PHASE-SHIFT	最大切换频率：	1000 kHz
技术：	BIPOLAR	温度等级：	COMMERCIAL
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

UC3878J 数据手册

application

INFO

UC1875/6/7/8

UC2875/6/7/8

UC3875/6/7/8

available

Phase Shift Resonant Controller

FEATURES

DESCRIPTION

• Zero to 100% Duty Cycle Control

The UC1875 family of integrated circuits implements control of a bridge

power stage by phase-shifting the switching of one half-bridge with respect

to the other, allowing constant frequency pulse-width modulation in combi-

nation with resonant, zero-voltage switching for high efficiency performance

at high frequencies. This family of circuits may be configured to provide

control in either voltage or current mode operation, with a separate

over-current shutdown for fast fault protection.

• Programmable Output Turn-On Delay

• Compatible with Voltage or Current

Mode Topologies

• Practical Operation at Switching

Frequencies to 1MHz

A programmable time delay is provided to insert a dead-time at the turn-on

of each output stage. This delay, providing time to allow the resonant

switching action, is independently controllable for each output pair (A-B,

C-D).

• Four 2A Totem Pole Outputs

• 10MHz Error Amplifier

• Undervoltage Lockout

With the oscillator capable of operation at frequencies in excess of 2MHz,

overall switching frequencies to 1MHz are practical. In addition to the stan-

dard free running mode, with the CLOCKSYNC pin, the user may configure

these devices to accept an external clock synchronization signal, or may

lock together up to 5 units with the operational frequency determined by

the fastest device.

• Low Startup Current –150µA

• Outputs Active Low During UVLO

• Soft-Start Control

• Latched Over-Current Comparator

With Full Cycle Restart

Protective features include an undervoltage lockout which maintains all out-

puts in an active-low state until the supply reaches a 10.75V threshold.

1.5V hysteresis is built in for reliable, boot-strapped chip supply.

Over-current protection is provided, and will latch the outputs in the OFF

state within 70nsec of a fault. The current-fault circuitry implements

• Trimmed Reference

full-cycle restart operation.

(continued)

BLOCK DIAGRAM

UDG-95073

SLUS229B - JULY 1999 - REVISED JUNE 2004

12 3 4 5 6 7...19

中文翻译

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与UC3878J相关器件

型号	品牌	获取价格	描述	数据表
UC3878L	TI	获取价格	Phase Shift Resonant Controller
UC3878N	TI	获取价格	Phase Shift Resonant Controller
UC3878QP	TI	获取价格	Phase Shift Resonant Controller
UC3878QPTR	ETC	获取价格	Voltage-Mode SMPS Controller
UC3879	TI	获取价格	Phase Shift Resonant Controller
UC3879A	UTC	获取价格	low cost power-saving mode pwm controller for...
UC3879AG-S08-R	UTC	获取价格	Switching Regulator/Controller,
UC3879AL-S08-R	UTC	获取价格	Switching Regulator/Controller,
UC3879DW	TI	获取价格	PHASE SHIFT RESONANT CONTROLLER
UC3879DWTR	TI	获取价格	PHASE SHIFT RESONANT CONTROLLER

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