IR2156s半桥IC资源-CSDN文库

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Features

•

Ballast control and half-bridge driver in one IC

•

Programmable preheat frequency

•

Programmable preheat time

•

Internal ignition ramp

•

Programmable over-current threshold

•

Programmable run frequency

Data Sheet No. PD60182-I

BALLAST CONTROL IC

CFL Application Diagram

•

Programmable dead time

•

DC bus under-voltage reset

•

Shutdown pin with hysteresis

•

Internal 15.6V zener clamp diode on Vcc

•

Micropower startup (150µA)

•

Latch immunity and ESD protection

•

Also available LEAD-FREE (PbF)

Description

The IR2156 incorporates a high voltage half-bridge

gate driver with a programmable oscillator and state

diagram to form a complete ballast control IC. The

IR2156 features include programmable preheat and

run frequencies, programmable preheat time, program-

mable dead-time, and programmable over-current pro-

tection. Comprehensive protection features such as

protection from failure of a lamp to strike,filament fail-

ures, as well as an automatic restart function, have

been included in the design. The IR2156 is available in

both 14 lead PDIP and 14 lead SOIC packages.

www.irf.com 1

Packages

14 Lead PDIP

14 Lead SOIC

(narrow body)

RES

VCC1

IR2156

RPH

VDC

CPH

COM

BOOT

RES

FILTE

CPH

SNUB

CP1

CP2

ELCAP1

RECT1

RECT2

VCC

VCC2

VDC

BOOT

BUS

SUPPLY

IR2156

(

) & (PbF)

IR2156

(

) & (PbF)

www.irf.com 3

Recommended Operating Conditions

For proper operation the device should be used within the recommended conditions.

Symbol Definition Min. Max. Units

High side floating supply voltage V

- 0.7 V

CLAMP

BSMIN

Minimum required VBS voltage for proper HO functionality 5 V

Steady state high side floating supply offset voltage -1 600

Supply voltage V

CCUV+

CLAMP

Supply current note 2 10 mA

CT lead capacitance

220

— pF

Shutdown lead current -1 1

Current sense lead current -1 1

Junction temperature -40 125

SDLK

SD pin leakage current (@V

=6V) — 125

CSLK

CS pin leakage current (@V

=3V) — 25

Note 2: Enough current should be supplied into the VCC lead to keep the internal 15.6V zener clamp diode on this lead

regulating its voltage, V

CLAMP

Electrical Characteristics

= V

BIAS

= 14V +/- 0.25V, V

VDC

= Open, R

= 39.0kΩ, R

= 100.0kΩ

= 470 pF, V

CPH

= 0.0V, V

= 0.0V,

= 0.0V, C

LO, HO

= 1000pF, T

= 25

C unless otherwise specified.

Symbol Definition Min. Typ. Max. Units Test Conditions

Supply Characteristics

CCUV+

supply undervoltage positive going 10.5 11.5 12.5 V

rising from 0V

threshold

CCUV-

supply undervoltage negative going 8.5 9.5 10.5 V

falling from 14V

threshold

UVHYS

supply undervoltage lockout hysteresis 1.5 2.0 3.0

QCCUV

UVLO mode quiescent current 50 120 200 V

= 11V

QCCFLT

Fault-mode quiescent current — 200 470 SD = 5.1V, or

CS > 1.3V

QCC

Quiescent V

supply current — 1.0 1.5 CT connected toCOM

VCC =14V,RT=15kΩ

QCC50K

supply current, f = 50kHz — 1.0 1.5 RT = 15kΩ

= 470 pF

CLAMP

zener clamp voltage 14.5 15.6 16.5 V I

= 5mA

µA

QBS0

Quiescent VBS supply current -5 0 5

(CT = 0V)

QBS1

Quiescent V

supply current —

50 V

= V

= 14V)

Offset supply leakage current — — 50

µA

= V

= 600V

µA

Floating Supply Characteristics

µA

IR2156

(

) & (PbF)

4 www.irf.com

Electrical Characteristics

= V

BIAS

= 14V +/- 0.25V, V

VDC

= Open, R

= 39.0kΩ, R

= 100.0kΩ

= 470 pF, V

CPH

= 0.0V, V

= 0.0V,

= 0.0V, C

LO, HO

= 1000pF, T

= 25

C unless otherwise specified.

Symbol Definition Min. Typ. Max. Units Test Conditions

RPH Characteristics

RPHLK

Open circuit RPH pin leakage current — 0.1 —

µA

CT = 10V

RPHFLT

Fault-mode

RPH

pin voltage

— 0 —

mV SD

5.1V

or CS >

1.3V

Oscillator, Ballast Control, I/O Characteristics

kHz

osc

Oscillator frequency 28 30 32 R

=33.0kΩ, VV

= 5V

CPH

= Open

(Guaranteed by design)

osc

Oscillator frequency 37.6 40 43.9 KHz

=40k, R

= 100K

= 470pF

d Oscillator duty cycle

—

CT+

Upper

ramp voltage threshold

—

8.3

—

CT-

Lower

ramp voltage threshold

—

4.8

—

CTFLT

Fault-mode

pin voltage

—

mV SD

5.1V

or CS >

1.3V

only CT CAP should

beconnected to CT

DLO

LO output deadtime

— 2.0 — usec

DHO

HO output deadtime

— 2.0 — usec

RDT Internal deadtime resistor

—

KΩ

V V

= 14V

RT Characteristics

RTLK

Open circuit RT pin leakage current — 0.1 —

µA

CT = 10V

RTFLT

Fault-mode

pin voltage

— 0 —

mV SD

5.1V

or CS >

1.3V

Preheat Characteristics

CPH

CPH pin charging current 3.6 4.3 5.2 µA V

CPH

=10V,CT=10V,

VDC=5V

CPHFLT

Fault-mode

CPH

pin voltage

— 0 — mV

5.1V

or CS >

1.3V

SDTH+

Rising shutdown pin threshold voltage — 5.1 — V

SDHYS

Shutdown pin threshold hysteresis — 450 — mV

CSTH

Over-current sense threshold voltage 1.1 1.25 1.44 V

Over-current sense propogation delay — 160 — nsec Delay from CS to LO

CSPW

Over-current sense minimum pulse width — 135 — nsec V

pulse amplitude

= V

CSTH

+100mV

VDC

DC bus sensing resistor 7.5 10 14 kΩ V

CPH

>12V, VCT=0V

VDC= 7V

CPH-VDC

CPH to VDC offset voltage 10.3 10.9 11.4 V V

CPH

=open,VVDC=0V

Protection Characteristics

VOL Low-level output voltage — 0 105 Io = 0

VOH High-level output voltage — 0 100 V

BIAS

- Vo, Io = 0

tr Turn-on rise time — 110 150

tf Turn-off fall time

—

100

Gate Driver Output Characteristics

= C

=1nF

关断延迟

关断阀值

过流检测阀值

传播延迟

剩余23页未读，继续阅读

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