UCC2895集成电路（IC）的DC-DC开关控制器规格书PDF中文资料

UCC2895属于集成电路（IC）的DC-DC开关控制器。由德州仪器制造生产的UCC2895DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

1 Features

1• Programmable Output Turnon Delay

• Adaptive Delay Set

• Bidirectional Oscillator Synchronization

• Capability for Voltage-Mode or Current-Mode

Control

• Programmable Soft Start/Soft Stop and Chip

Disable Via a Single Pin

• 0% to 100% Duty-Cycle Control

• 7-MHz Error Amplifier

• Operation to 1 MHz

• Low-Active Current Consumption (5-mA Typ at

500 kHz)

• Very-Low-Current Consumption During

Undervoltage Lockout (150-μA Typ)

• Supports Defense, Aerospace, and Medical

Applications:

– Controlled Baseline

– One Assembly/Test Site

– One Fabrication Site

– Available in Military (–55°C to 125°C)

Temperature Range

– Extended Product Life Cycle

– Extended Product-Change Notification

– Product Traceability

2 Description

The UCC2895-EP is a phase-shift pulse-width

modulation (PWM) controller that implements control

of a full-bridge power stage by phase shifting the

switching of one half bridge with respect to the other.

It allows constant frequency PWM in conjunction with

resonant zero-voltage switching to provide high

efficiency at high frequencies. The device can be

used either as a voltage-mode or current-mode

controller.

While the UCC2895-EP maintains the functionality of

the UC2875/6/7/8 family, it improves on that controller

family with additional features, such as enhanced

control logic, adaptive delay set, and shutdown

capability. Since the device is built in BCDMOS, it

operates with dramatically less supply current than its

bipolar counterparts. The UCC2895-EP can operate

with a maximum clock frequency of 1 MHz.

The M-temp UCC2895-EP device is offered in the 20-

pin SOIC (DW) package.