UCC29900PWR

更新时间： 2024-09-20 12:58:59

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德州仪器 - TI		控制器
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UCC29900PWR 数据手册

UCC29900

www.ti.com

SLUS923B –APRIL 2009–REVISED JUNE 2010

Integral Cycle Controller

Check for Samples: UCC29900

FEATURES

DESCRIPTION

•

Integral Cycle Control for High Efficiency

Burst Mode Operation at all Load Levels

The UCC29900 is a new class of Integral Cycle

Control (ICC) controller designed to implement

ultra-high efficiency isolated switching power stages.

ICC can be employed to achieve ultra-high

conversion efficiency over a wide range of load

current. The hysteretic mode output voltage control

employed exhibits fast transient response, with

almost zero output overshoot. Isolation stage

efficiencies of >96% have been demonstrated in

reference designs.

Allows Easy Use of Low Cost Self-Driven

Secondary-Side Synchronous Rectifiers (SRs)

Advanced Drive Signal Timing Control for

Volt-Sec Balance

Light-Load Mode for Reduced Power

Consumption at No Load and Light Load

•

Integrated Soft-Start Function

Frequency Dithering for Improved EMI

Reduction

ICC controllers operate the switching power stage in

high efficiency burst mode at all load levels, rather

than the more conventional PWM mode.

•

Bus Voltage UVLO and OVP Sensing

Current Sense Input for Overcurrent

Protection

The UCC29900 is a highly integrated ICC controller,

incorporating all the features necessary to implement

•

SCP Input Pin to Flag Short-Circuit Condition

Selectable Latching or Hiccup Mode OCP/SCP

wide range of high efficiency designs. The

UCC29900 has been designed for ease of use, and

incorporates many useful features, including

over-current and short-circuit protection, bus under- &

over-voltage detection, soft-start and light load

management.

START Output – Ease Startup Bias Design,

(allow improved PFC stage startup transient)

•

FAULT Output to Indicate Latched Fault State

APPLICATIONS

•

High Efficiency AC-DC Converters

•

Low Profile & High Density AC-DC Adapters

SIMPLIFIED APPLICATION DIAGRAM

3.3 V

VOUT

C_OUT

CLAMP VDD

V_BUS

MODE

VIN

UCC29900

SCP

START VDD

VSS FAULT

14 13

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCT PREVIEW information concerns products in the

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

the right to change or discontinue these products without notice.

12 3 4 5 6 7...24

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与UCC29900PWR相关器件

型号	品牌	获取价格	描述	数据表
UCC29910A	TI	获取价格	Buck PFC Controller
UCC29910A_15	TI	获取价格	Buck PFC Controller
UCC29910APW	TI	获取价格	Buck PFC Controller
UCC29910APWR	TI	获取价格	Buck PFC Controller
UCC29910PW	TI	获取价格	Buck PFC Controller 14-TSSOP -40 to 85
UCC29910PWR	TI	获取价格	Buck PFC Controller 14-TSSOP -40 to 85
UCC29950	TI	获取价格	高效 CCM PFC/LLC 组合控制器
UCC29950D	TI	获取价格	高效 CCM PFC/LLC 组合控制器 \| D \| 16 \| -40 to 125
UCC29950DR	TI	获取价格	高效 CCM PFC/LLC 组合控制器 \| D \| 16 \| -40 to 125
UCC3305	TI	获取价格	HID Lamp Controller

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