Datasheet > HV9980

HV9980

更新时间： 2024-10-01 14:54:03

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
18页	2006K
描述
The HV9980 is a fully integrated 3-channel peak-current PWM controller for driving buck converters

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HV9980 数据手册

HV9980

3-Channel LED Array Driver IC

Features

General Description

• Integrated 200V, 25Ω (Typical) MOSFETs

• Programmable Output Current of up to 80 mA per

Channel

• TTL-Compatible PWM Dimming Inputs

• Three-Phase Synchronous Operation

• Leading Edge Blanking

The HV9980 is a fully integrated 3-channel peak-current

PWM controller for driving buck converters in Constant

Output Current mode. It is optimized for use with a large

array of 20 mA to 80 mA LED strings, where multiple

HV9980 ICs are used, sharing a common clock and a

common reference voltage.

Both the clock and the voltage reference are external to

the HV9980 for improved output current accuracy and

uniform illumination. The output currents are programmed

by controlling peak source current in each of the three

internal 200V, 25Ω switching MOSFETs.

• Individual Channel Short-Circuit Protection with Skip

Mode

• Overtemperature Protection

Applications

The peak current is detected by monitoring voltage at

external sense resistors connected to RSENSE1-3. The

switching MOSFET is turned off when the corresponding

current sense signal exceeds the reference voltage

applied at REF1-3 (in the case of normal output signal

polarity). The beginning of the next switching cycle is

determined by the external clock signal received at the

CLK input. All three channels operate at a switching

frequency of 1/6 of the external clock frequency and

positioned 120º out-of-phase for the purpose of input and

output ripple current reduction. Each channel is protected

from an output Short-circuit condition. When an

Overcurrent condition is detected in the output switch

(RSENSE1-3), the corresponding channel shuts down for

200 µs. The HV9980 recovers automatically, when the

Short-circuit Overcurrent condition is removed. Each

current sense input (CS1-CS3) is equipped with a leading

edge blanking delay to prevent false triggering of the

current sense comparators due to circuit parasitics.

• LCD Panel Backlighting

• DLP RPTV or Projector LED Engine Driver

• RGB Decorative Lighting

• General LED Lighting

Overtemperature protection is included to prevent

destructive failures due to overheating. Programmable

slope compensation is available at each CS input. AGND

and PGND1-3 must be tied together on the printed circuit

board (PCB). VDD1-3 must be also connected together on

the PCB.

Package Type

24-lead SOW

(Top view)

REF1

24 PGND1

23 CS1

VDD1

CLK

22 RSENSE1

21 DRAIN1

20 PGND2

19 CS2

PWMD1

AGND

POL

REF2

18 RSENSE2

17 DRAIN2

16 DRAIN3

15 RSENSE3

14 CS3

VDD2

PWMD2

REF3 10

VDD3 11

See Table 3-1 for pin information.

PWMD3 12

13 PGND3

 2020 Microchip Technology Inc.

DS20005915A-page 1

12 3 4 5 6 7...18

中文翻译

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与HV9980相关器件

型号	品牌	获取价格	描述	数据表
HV9980WG-G	SUPERTEX	获取价格	3-Channel LED Array Driver IC
HV9982	SUPERTEX	获取价格	Three-Channel, Closed-Loop, Switch Mode LED Driver IC
HV9982	MICROCHIP	获取价格	The HV9982 is a three-channel, closed loop, peak current mode PWM controller for driving a
HV9982K6-G	SUPERTEX	获取价格	Three-Channel, Closed-Loop, Switch Mode LED Driver IC
HV9982K6-GM935	SUPERTEX	获取价格	LED Driver
HV9985	SUPERTEX	获取价格	Three-Channel, Closed-Loop, Switch Mode LED Driver IC
HV9985	MICROCHIP	获取价格	The HV9985 is a three-channel peak current mode PWM controller for driving single switch c
HV9985K6-G	SUPERTEX	获取价格	Three-Channel, Closed-Loop, Switch Mode LED Driver IC
HV9985K6-GM935	SUPERTEX	获取价格	LED Driver
HV9985QP-G	SUPERTEX	获取价格	LED Driver, 1-Segment, PDSO44, 17.83 X 7.50 MM, 2.64 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLI

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