Datasheet > UCC3583Q

UCC3583Q

更新时间： 2024-09-18 23:39:03

品牌	Logo	应用领域
其他 - ETC		开关信息通信管理控制器
页数	文件大小	规格书
10页	442K
描述
Current-Mode SMPS Controller

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中文翻译

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数据手册

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UCC3583Q 数据手册

UCC1583

UCC2583

UCC3583

Switch Mode Secondary Side Post Regulator

FEATURES

DESCRIPTION

• Precision Secondary Side Post

Regulation for Multiple Output Power

Supplies

The UCC3583 is a synchronizable secondary side post regulator for preci-

sion regulation of the auxiliary outputs of multiple output power supplies. It

contains a leading edge pulse width modulator, which generates the gate

drive signal for a FET power switch connected in series with the rectifying

diode. The turn-on of the power switch is delayed from the leading edge of

the secondary power pulse to regulate the output voltage. The UCC3583

contains a ramp generator slaved to the secondary power pulse, a voltage

error amplifier, a current error amplifier, a PWM comparator and associ-

ated logic, a gate driver, a precision reference, and protection circuitry.

• Useful for Both Single Ended and

Center Tapped Secondary Circuits

• Ideal Replacement for Complex

Magnetic Amplifier Regulated Circuits

• Leading Edge Modulation

The ramp discharge and termination of the gate drive signal are triggered

by the synchronization pulse, typically derived from the falling edge of the

transformer secondary voltage. The ramp starts charging again once its

low threshold is reached. The gate drive signal is turned on when the ramp

voltage exceeds the control voltage. This leading edge modulation tech-

nique prevents instability when the UCC3583 is used in peak current mode

primary controlled systems.

• Does Not Require Gate Drive

Transformer

• High Frequency (>500kHz) Operation

• Applicable for Wide Range of Output

Voltages

• High Current Gate Driver (0.5A

The controller operates from a floating power supply referenced to the out-

put voltage being controlled. It features an undervoltage lockout (UVLO)

circuit, a soft start circuit, and an averaging current limit amplifier. The cur-

rent limit can be programmed to be proportional to the output voltage, thus

achieving foldback operation to minimize the dissipation under short circuit

conditions.

Sink/1.5A Source)

• Average Current Limiting Loop

(continued)

TYPICAL APPLICATION AND BLOCK DIAGRAM

UDG-96201-2

Note: Pin connections shown for 14-pin packages.

11/98

12 3 4 5 6 7...10

中文翻译

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与UCC3583Q相关器件

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UCC3583QTR	ETC	获取价格	Current-Mode SMPS Controller
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UCC3585DTRG4	TI	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO16, GREEN, PLASTIC, SOIC-16
UCC3585J	TI	获取价格	暂无描述
UCC3585M	TI	获取价格	LOW-VOLTAGE SYNCHRONOUS BUCK CONTROLLER
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UCC3585N	TI	获取价格	Low Voltage Synchronous Buck Controller 16-PDIP 0 to 85
UCC3585NG4	TI	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP16, GREEN, PLASTIC, DIP-16
UCC3588	TI	获取价格	5-Bit Programmable Output BiCMOS Power Supply Controller