Datasheet > UC3878DWPG4

UC3878DWPG4

更新时间： 2024-11-21 19:30:35

品牌	Logo	应用领域
德州仪器 - TI		光电二极管
页数	文件大小	规格书
12页	422K
描述
IC,SMPS CONTROLLER,CURRENT/VOLTAGE,BIPOLAR,SOP,28PIN,PLASTIC

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中文翻译

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技术参数
数据手册

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UC3878DWPG4 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	SOP, SOP28,.4	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.84	控制模式：	CURRENT/VOLTAGE-MODE
JESD-30 代码：	R-PDSO-G28	端子数量：	28
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	0.5 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP28,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
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：	YES
最大切换频率：	1000 kHz	技术：	BIPOLAR
温度等级：	COMMERCIAL	端子形式：	GULL WING
端子节距：	1.27 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

UC3878DWPG4 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...12

中文翻译

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与UC3878DWPG4相关器件

型号	品牌	获取价格	描述	数据表
UC3878DWPTR	ETC	获取价格	Voltage-Mode SMPS Controller
UC3878DWPTRG4	TI	获取价格	IC,SMPS CONTROLLER,CURRENT/VOLTAGE,BIPOLAR,SOP,28PIN,PLASTIC
UC3878J	TI	获取价格	Phase Shift Resonant Controller
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,

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