Datasheet > 电源电路 > 开关式稳压器或控制器> UC1878JQMLV

UC1878JQMLV

更新时间： 2024-11-14 13:00:11

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
19页	740K
描述
IC,SMPS CONTROLLER,CURRENT/VOLTAGE,BIPOLAR,LLCC,28PIN,CERAMIC

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中文翻译

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技术参数
数据手册

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UC1878JQMLV 技术参数

生命周期：	Obsolete	包装说明：	QCCN, LCC28,.45SQ
Reach Compliance Code：	unknown	风险等级：	5.84
控制模式：	CURRENT/VOLTAGE-MODE	JESD-30 代码：	S-XQCC-N28
端子数量：	28	最高工作温度：	125 °C
最低工作温度：	-55 °C	最大输出电流：	0.5 A
封装主体材料：	CERAMIC	封装代码：	QCCN
封装等效代码：	LCC28,.45SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	认证状态：	Not Qualified
筛选级别：	38535V;38534K;883S	子类别：	Switching Regulator or Controllers
表面贴装：	YES	最大切换频率：	2000 kHz
技术：	BIPOLAR	温度等级：	MILITARY
端子形式：	NO LEAD	端子节距：	1.27 mm
端子位置：	QUAD	Base Number Matches：	1

UC1878JQMLV 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UC1878JQMLV相关器件

型号	品牌	获取价格	描述	数据表
UC1878L	TI	获取价格	Phase Shift Resonant Controller
UC1878L883B	TI	获取价格	IC,SMPS CONTROLLER,CURRENT/VOLTAGE,BIPOLAR,LLCC,28PIN,CERAMIC
UC1878N	TI	获取价格	Phase Shift Resonant Controller
UC1878QP	TI	获取价格	Phase Shift Resonant Controller
UC1879	TI	获取价格	Phase Shift Resonant Controller
UC1879J	TI	获取价格	PHASE SHIFT RESONANT CONTROLLER
UC1879J883B	TI	获取价格	PHASE SHIFT RESONANT CONTROLLER
UC1879L	TI	获取价格	0.1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CQCC28
UC187DWTR	TI	获取价格	UC187DWTR
UC187J	ETC	获取价格	Analog IC

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