Microchip HV9861A Bruksanvisning

Microchip Inte kategoriserad HV9861A

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2014-2022 Microchip Technology Inc. and its subsidiaries DS20005333B-page 1

Features

• Fast Average Current Control

• Programmable Constant Off-Time Switching

• PWM/Linear Dimming Input

• Output Short Circuit Protection with Skip Mode

• Ambient Operating Temperature -40°C to +125°C

• Pin-Compatible with the HV9910B and HV9961

Applications

• DC/DC or AC/DC LED Driver Applications

• LED Back-Light Driver for LCD Displays

• General Purpose Constant Current Source

• LED Signage and Displays

• Architectural and Decorative LED Lighting

• LED Street Lighting

Description

HV9861A is a patented, average-mode, constant-

current control, LED driver IC operating in a constant

off-time mode. Unlike the HV9910B, this control IC

does not produce a peak-to-average error, which

therefore greatly improves the accuracy, line and load

regulation of the LED current without any need for loop

compensation or high-side current sensing. The output

LED current accuracy is ±3%.

The IC is equipped with a current limit comparator for

hiccup-mode output short circuit protection. Internal

over-temperature protection is provided. The internally

regulated voltage (VDD) for the HV9861A is 7.5V.

The IC can be powered from a 15 - 450V supply. A

PWM dimming input is provided that accepts an

external control TTL-compatible signal. The output

current can be programmed by an internal 270 mV

reference, or controlled externally through a 0 - 1.5V

dimming input.

HV9861A is pin-to-pin compatible with the HV9910B

and HV9961, and can be used as a drop-in

replacement for many applications to improve the LED

current accuracy and regulation.

Package Types

8-Lead SOIC 16-Lead SOIC

VIN

GND

GATE

VDD

PWMD

VIN

GND

GATE

VDD

PWMD

See Table 2-1 for pin information

HV9861A

LED Driver with Average-Mode Constant Current Control

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2014-2022 Microchip Technology Inc. and its subsidiaries DS20005333B-page 2

HV9861A

Typical Application Circuit

Functional Block Diagram

PWMD

VDD

GATE

VIN

HV9861A

15VDC to

450VDC

Sets

LED

Current

LED

Load

GND

RCS

R Q

S Q

TOFF

Timer

Latch

Enable

Blanking

0.45V

min (VLD

•

0.18, 0.27V)

650µs

Current

Mirror

Regulator

VIN

GND

VDD

GATE

PWMD

UVLO

POR

0.15/0.20V

Average Current

Control Logic

OUT

Auto-REF

HV9861A

CLK

11µA

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2014-2022 Microchip Technology Inc. and its subsidiaries DS20005333B-page 3

HV9861A

1.0 ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

VIN to GND............................................................................................................................................... –0.5V to +470V

VDD to GND.................................................................................................................................................................12V

LD, PWMD, GATE to GND.......................................................................................................... ....–0.3V to (V

DD + 0.3V)

CS, RT to GND ....................................................................................................................................... ....–0.3V to 5.0V

Operating temperature........................................................................................................................... –40°C to +125°C

Storage temperature .............................................................................................................................. –65°C to +150°C

Continuous power dissipation (TA = +25°C)

8-lead SOIC...........................................................................................................................................650 mW

16-lead SOIC.......................................................................................................................................1000 mW

1.1 ELECTRICAL SPECIFICATIONS

Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at those or any other conditions,

above those indicated in the operatio is not implied. Exposure to maximumnal listings of this specification,

rating conditions for extended periods may affect device reliability.

TABLE 1-1: ELECTRICAL CHARACTERISTICS (Note 1)

Parameter Symbol Min Typ Max Units Conditions

Input

Input DC Supply Voltage

Range (Note 2)VINDC 15 — 450 V DC Input Voltage (Note 3)

Shut-down Mode Supply

Current IINSD — 0.5 1.1 mA Pin PWMD to GND (Note 3)

Internal Regulator

Internally Regulated Voltage VDD 7.25 7.50 8.20 V 500 pF at GATE; R

T = 226 kΩ

Line Regulation of VDD ΔVDD, line — — 1 V VIN = 15 - 450V,

500 pF at GATE; RT = 226 kΩ

Load Regulation of VDD ΔVDD, load — — 100 mV IDD(ext) = 0 - 1 mA,

500 pF at GATE; RT = 226 kΩ

VDD Under-voltage Lockout

Threshold UVLO 6.45 — — V VIN rising (Note 3)

VDD Under-voltage Lockout

Hysteresis ∆UVLO — 500 — mV V

IN falling

VDD Voltage Margin ∆VDD(UV) 500 — — mV ∆VDD(UV) = VDD - UVLO (Note 3)

Maximum Input Current

(limited by UVLO) IIN,MAX

3.5 — — mA VIN = 15V, TA

= 25°C (Note 4)

1.5 — — VIN = 15V, TA

= 125°C (Note 4)

PWM Dimming

PWMD Input Low Voltage VEN(lo) — — 0.8 V VIN = 15 - 450V (Note 3)

PWMD Input High Voltage VEN(hi) 2.2 — — V VIN = 15 - 450V (Note 3)

Internal Pull-down Current

at PWMD IEN 8 — 15 μA VPWMD = 0.8V

Produktspecifikationer

Varumärke:	Microchip
Kategori:	Inte kategoriserad
Modell:	HV9861A
Färg på produkten:	Zwart, zilver
Årlig-energiförbrukning:	58 kWu
Förpackningens vikt:	8100 g
Förpackningens bredd:	985 mm
Djuppackning:	143 mm
Förpackningshöjd:	596 mm
Energieffektivitetsklass (gammal):	A
Användarmanual:	Ja
På / Av knapp:	Ja
Skärm diagonal:	32 "
Upplösning:	1920 x 1080 Pixels
Original bildförhållande:	16:9
Ethernet LAN:	Ja
Skärmform:	Flat
Ljusstyrka:	- cd/m²
Snabbstartsguide:	Ja
Antal HDMI-portar:	3
Kompositvideoingång:	1
Komponenter för video (YPbPr/YCbCr):	1
Antal Ethernet LAN (RJ-45)-portar:	1
Smart TV:	Ja
Inbyggda högtalare:	Ja
Genomsnittlig effekt:	20 W
Strömförbrukning (i standby):	0.3 W
Antal högtalare:	2
Hörlursutgångar:	1
Antal USB-anslutningar:	2
Luidsprekers:	2
HD typ:	Full HD
3D:	Nee
Respons tid:	- ms
VESA montering:	Ja
Panelmonteringsgränssnitt:	200 x 200 mm
Bild-i-bild:	Ja
Hållbarhetscertifikat:	ENERGY STAR
Djup (utan bas):	49 mm
Höjd (utan bas):	445.4 mm
Bredd (utan bas):	738 mm
Vikt (utan bas):	5000 g
Skärmdiameter i centimeter:	81 cm
Common Interface Plus (CI+):	Ja
Typ av tuner:	Analoog & digitaal
Digitalt signalformat:	DVB-C, DVB-S2, DVB-T
Enhetsbredd (med stativ):	738 mm
Djupenhet (med stativ):	265 mm
Enhetshöjd (med stativ):	509.6 mm
Vikt (med stativ):	6100 g
Digital Living Network Alliance (DLNA) certifierad:	Ja
Möjlighet att justera skärmmått:	16:9
Text-TV:	Ja
Elektronisk TV-guide:	Ja
On Screen Display (OSD):	Ja
Antal skärmspråk:	26
Audio Return Channel (ARC):	Nee
Consumer Electronics Control (CEC):	Anynet+
Gemensamt gränssnitt (CI):	Ja
Antal RF-portar:	1
Rörelseinterpolationsteknik:	CMR (Clear Motion Rate) 100
Antal portar USB 3.2 Gen 1 (3.1 Gen 1) Typ A:	2
Antal SCART-portar:	1
Fjärrutgång (IR).:	1
Marknadsföringsnamn dynamiskt kontrastförhållande:	Mega Contrast
3D-teknik som stöds:	Samsung 3D HyperReal Engine
Fjärrkontroll ingår:	Ja
Wifi:	Ja
AC-ingångsspänning:	220 - 240 V
AC-ingångsfrekvens:	50 - 60 Hz
Strömförbrukning (typiskt):	40 W
Batterier-ingår:	Ja