ON Semiconducto NCL30488 User Manual

Power Factor Corrected
LED Driver with Primary
Side CC/CV

NCL30488

The NCL30488 is a power factor corrected flyback controller
targeting isolated constant current LED drivers. The controller
operates in a quasi−resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to tightly regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, its biasing and for an
optocoupler.

The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design.

Features

• High Voltage Startup

• Quasi−resonant Peak Current−mode Control Operation

• Primary Side Feedback

• CC / CV Accurate Control V

• Tight LED Constant Current Regulation of ±2% Typical

• Digital Power Factor Correction

• Analog and Digital Dimming

• Cycle by Cycle Peak Current Limit

• Wide Operating V

CC

Range

• −40 to + 125°C

• Robust Protection Features

♦ Brown−Out
♦ OVP on V

Constant Voltage / LED Open Circuit Protection

♦
♦ Winding Short Circuit Protection
♦ Secondary Diode Short Protection
♦ Output Short Circuit Protection
♦ Thermal Shutdown
♦ Line over Voltage Protection

CC

• This is a Pb−Free Device

Typical Applications

• Integral LED Bulbs

• LED Power Driver Supplies

• LED Light Engines

up to 320 V rms

in

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SOIC−7

CASE 751U

MARKING
DIAGRAM

8

L30488XX

ALYWX

G

1

L30488 = Specific Device Code
XX = Version
A = Assembly Location
L = Wafer Lot
YW = Assembly Start Week
G = Pb−Free Package

PIN CONNECTIONS

COMP

GND

See detailed ordering and shipping information on page 21 of
this data sheet.

1

ZCD

2

3

CS

4

ORDERING INFORMATION

HV

8

VCC

6

DRV

5

© Semiconductor Components Industries, LLC, 2020

April, 2021 − Rev. 1

1 Publication Order Number:

NCL30488/D

NCL30488

NCL30488

1

2

3

45

7

6

.

.

.

Figure 1. Typical Application Schematic for NCL30488

PIN FUNCTION DESCRIPTION NCL30488

Pin N5 Pin Name Function Pin Description

1 COMP OTA output for CV loop This pin receives a compensation network (capacitors and resistors) to stabilize the

2 ZCD Zero crossing Detection

V

sensing

aux

3 CS Current sense This pin monitors the primary peak current.

4 GND − The controller ground

5 DRV Driver output The driver’s output to an external MOSFET

6 VCC Supplies the controller This pin is connected to an external auxiliary voltage.

7 NC creepage

8 HV High Voltage sensing This pin connects after the diode bridge to provide the startup current and internal

CV loop

This pin connects to the auxiliary winding and is used to detect the core reset event.
This pin also senses the auxiliary winding voltage for accurate output voltage control.

high voltage sensing function.

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2

COMP

ZCD

Constant Voltage

Control

Zero crossing detection Logic
(ZCD blanking,Time−Out, …)

Aux . Winding Short Circuit Prot.

Standby

V

CV

Slow_OVP

Fast_OVP

NCL30488

INTERNAL CIRCUIT ARCHITECTURE

STOP

L_OVP

Aux_SCP

Fast_OVP

Thermal

Shutdown

Aux_SCP

Fault

Management

CS_short

V

REFXVVS

Valley Selection

Frequency foldback

Slow_OVP

UVLO

VCC_OVP

OFF

VCC Management

BO_NOK

L_OVP

V

HVdiv

VCC
OVP

Brown−out

Line OVP

HV

Startup

VCC

HV

CS

GND

Line

feed −forward

Leading

Edge

Blanking

Q_drv

V

HVdiv

STOP

V

Standby

HVdiv

V

Ipk_max

WOD_SCP

CS_short

REFX

CS_reset

STOP

Power factor and

Constant−current control

Max. P eak

Current Limit

Winding /

Output diode

SCP

CS Short

Protection

Figure 2. Internal Circuit Architecture NCL30488

S

RQQ

Maximum

on−time

Q_drv

Driver

and

Clamp

DRV

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NCL30488

MAXIMUM RATINGS TABLE

Symbol Rating Value Unit

V

CC(MAX)

I

CC(MAX)

V

DRV(MAX)

I

DRV(MAX)

V

HV(MAX)

I

HV(MAX)

V

MAX

I

MAX

R

θ

T

J(MAX)

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.

1. V

DRV

2. This level is low enough to guarantee not to exceed the internal ESD diode and 5.5 V ZENER diode. More positive and negative voltages

can be applied if the pin current stays within the −2 mA / 5 mA range.

3. This device series contains ESD protection and exceeds the following tests: Human Body Model 4000 V per Mil−Std−883, Method 3015.

Charged Device Model 1000 V per JEDEC Standard JESD22−C101D.

4. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.

Maximum Power Supply voltage, VCC pin, continuous voltage
Maximum current for VCC pin

Maximum driver pin voltage, DRV pin, continuous voltage
Maximum current for DRV pin

Maximum voltage on HV pin
Maximum current for HV pin (dc current self−limited if operated within the allowed range)

Maximum voltage on low power pins (except pins DRV and VCC)
Current range for low power pins (except pins DRV and VCC)

Thermal Resistance Junction−to−Air 200 °C/W

J−A

−0.3 to 30

Internally limited

−0.3, V

(Note 1)

DRV

−300, +500

−0.3, +700

±20

−0.3, 5.5 (Note 2)

−2, +5

Maximum Junction Temperature 150 °C

Operating Temperature Range −40 to +125 °C

Storage Temperature Range −60 to +150 °C

ESD Capability, HBM model except HV pin (Note 3) 4 kV

ESD Capability, HBM model HV pin 1.5 kV

ESD Capability, CDM model (Note 3) 1 kV

is the DRV clamp voltage V

when VCC is higher than V

DRV(high)

DRV(high)

. V

is VCC otherwise.

DRV

V

mA

V

mA

V

mA

V

mA

ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T

For min/max values T

= −40°C to +125°C, Max TJ = 150°C, VCC = 12 V)

J

Parameter

Test Condition Symbol Min Typ Max Unit

J

HIGH VOLTAGE SECTION

High voltage current source VCC = V

– 200 mV I

CC(on)

High voltage current source VCC = 0 V I

VCC level for I

HV(start1)

to I

transition V

HV(start2)

Minimum startup voltage VCC = 0 V V

HV source leakage current VHV = 450 V I

Maximum input voltage (rms) for correct operation of
the PFC loop

SUPPLY SECTION

Supply Voltage
Startup Threshold
Minimum Operating Voltage
Hysteresis V
Internal logic reset

CC(on)

– V

CC(off)

VCC increasing
VCC decreasing
VCC decreasing

Over Voltage Protection
VCC OVP threshold

V

noise filter (Note 5)

CC(off)

V

noise filter (Note 5)

CC(reset)

Supply Current
Device Disabled/Fault
Device Enabled/No output load on pin 5
Device Switching (F
Device switching (F

= 65 kHz)

sw

= 700 Hz)

sw

VCC > V

CC(off)

Fsw = 65 kHz
C

= 470 pF, Fsw = 65 kHz

DRV

V

v 0.9 V

COMP

= 25°C, VCC = 12 V, V

HV(start2)

HV(start1)

CC(TH)

HV(MIN)

HV(leak)

V

HV(OL)

V

CC(on)

V

CC(off)

V

CC(HYS)

V

CC(reset)

V

CC(OVP)

t

VCC(off)

t

VCC(reset)

I

CC1

I

CC2

I

CC3

I

CC4

3.9 5.1 6.2 mA

− 300 −

− 0.8 − V

− 15 − V

− 4.5 10

320 − − V rms

16

9.3

7.6
4

25 26.5 28 V

−

−

1.2
–

−

−

= 0 V, VCS = 0 V)

ZCD

18

10.2

−

5

5

20

1.35

3.0

3.5

1.7

20

10.7

−

6

−

−

1.6

3.5

4.0

1.88

mA

mA

V

ms

mA

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4

NCL30488

ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T

For min/max values T

= −40°C to +125°C, Max TJ = 150°C, VCC = 12 V) (continued)

J

= 25°C, VCC = 12 V, V

J

Parameter UnitMaxTypMinSymbolTest Condition

CURRENT SENSE

Maximum Internal current limit

Leading Edge Blanking Duration for V

ILIM

Propagation delay from current detection to gate
off−state

Maximum on−time (option 1) t

Maximum on−time (option 2) t

Threshold for immediate fault protection activation
(140% of V

Leading Edge Blanking Duration for V

ILIM

)

CS(stop)

Current source for CS to GND short detection I

Current sense threshold for CS to GND short

VCS rising V

detection

GATE DRIVE

Drive Resistance
DRV Sink
DRV Source

Drive current capability
DRV Sink (Note GBD)
DRV Source (Note GBD)

Rise Time (10% to 90%) C

Fall Time (90 %to 10%) C

DRV Low Voltage VCC = V

DRV High Voltage VCC = V

= 470 pF t

DRV

= 470 pF t

DRV

+0.2 V

CC(off)

C

C

DRV

DRV

= 470 pF, R

CC(MAX)

= 470 pF, R

DRV

DRV

= 33 kW

= 33 kW

ZERO VOLTAGE DETECTION CIRCUIT

Upper ZCD threshold voltage

Lower ZCD threshold voltage V

Threshold to force V

maximum during startup V

REFX

V

rising V

ZCD

falling V

ZCD

falling V

ZCD

ZCD hysteresis V

Propagation Delay from valley detection to DRV high
(no t

LEB4

)

Additional delay from valley lockout output to DRV
latch set (programmable option)

V

decreasing t

ZCD

V

decreasing T

ZCD

Equivalent time constant for ZCD input (GBD) t

Blanking delay after on−time (option 1) V

Blanking delay after on−time (option 2) V

Blanking Delay at light load (option 1) V

Blanking Delay at light load (option 2) V

> 0.35 V t

REFX

> 0.35 V t

REFX

< 0.25 V t

REFX

< 0.25 V t

REFX

Timeout after last DEMAG transition t

Pulling−down resistor V

ZCD

= V

ZCD(falling)

CONSTANT CURRENT CONTROL

Reference Voltage Tj = 25°C − 85°C V

Reference Voltage Tj = −40°C to 125°C V

Current sense lower threshold for detection of the

VCS falling V

leakage inductance reset time

Blanking time for leakage inductance reset detection t

V

ILIM

t

LEB

t

ILIM

on(MAX)

on(MAX)

V

CS(stop)

t

BCS

CS(short)

CS(low)

R

SNK

R

SRC

I

SNK

I

SRC

r

f

V

DRV(low)

V

DRV(high)

ZCD(rising)

ZCD(falling)

ZCD(start)

ZCD(HYS)

ZCD(DEM)

LEB4

PAR

ZCD(blank1)

ZCD(blank1)

ZCD(blank2)

ZCD(blank2)

TIMO

R

ZCD(pd)

REF/3

REF/3

CS(low)

CS(low)

= 0 V, VCS = 0 V)

ZCD

1.33 1.40 1.47 V

283 345 407 ns

− 100 150 ns

29 39 49

16 20 24

ms

ms

1.9 2.0 2.1 V

− 170 − ns

400 500 600

mA

20 60 90 mV

W

−

13

−

30

−

−

mA

−

500

−

300

−

−

– 30 − ns

– 20 − ns

8 – − V

10 12 14 V

− 90 150 mV

35 55 − mV

− 0.7 − V

15 − − mV

− − 150 ns

125 250 375 ns

− 20 − ns

1.1 1.5 1.9

0.75 1.0 1.25

0.6 0.8 1.0

0.45 0.6 0.75

5 6.5 8

− 200 −

ms

ms

ms

ms

ms

kW

327.9 334.2 341.2 mV

324 334.2 346 mV

20 50 100 mV

− 120 − ns

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NCL30488

ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T

For min/max values T

= −40°C to +125°C, Max TJ = 150°C, VCC = 12 V) (continued)

J

= 25°C, VCC = 12 V, V

J

Parameter UnitMaxTypMinSymbolTest Condition

POWER FACTOR CORRECTION

Clamping value for V

REF(PFC)

TJ = 0°C to 125°C V

REF(PFC)CLP

Line range detector for PFC loop VHV increases V

Line range detector for PFC loop VHV decreases V

CONSTANT VOLTAGE SECTION

Internal voltage reference for constant voltage
regulation

CV Error amplifier Gain G

Error amplifier current capability V

REFX

= V

(no dimming) I

REF

COMP pin lower clamp voltage V

COMP pin higher clamp voltage TJ = 0°C to 125°C V

COMP pin higher clamp voltage TJ = −40°C to 125°C V

Internal divider V

Internal ZCD voltage below which the CV OTA is
boosted

Threshold for releasing the CV boost V

COMP

to V

REFX

V

REF(CV)

REF(CV)

* 85% V

* 90% V

boost(CV)RST

Error amplifier current capability during boost phase I

ZCD OVP 1st level (slow OVP) option 1 V

ZCD voltage at which slow OVP is exit (option 1) V

* 115% V

REF(CV)

* 105% V

REF(CV)

Switching period during slow OVP T

ZCD fast OVP option 1 V

Number of switching cycles before fast OVP

* 125% + 150 mV V

ref(CV)

T

confirmation

Duration for disabling DRV pulses during ZCD fast
OVP

COMP pin internal pullup resistor (SSR option) R

LINE FEED FORWARD

VHV to I

conversion ratio K

CS(offset)

Offset current maximum value VHV > (450 V or 500 V) I

Line feed−forward current DRV high, V

= 200 V I

HV

VALLEY LOCKOUT SECTION

REFX

REFX

increasing

HV

> 80% V

> 80% V

REF

REF

Threshold for line range detection V

st

(1

to 2nd valley transition for V

(prog. option: 1st to 3rd valley transition)

Threshold for line range detection VHV decreasing

nd

(2

to 1st valley transition for V

(prog. option: 3rd to 1st valley transition)

VHV increases V

)

VHV decreases V

)

Blanking time for line range detection t

HL(PFC)

LL(PFC)

V

REF(CV)

EA

EA

CV(clampL)

CV(clampH)

CV(clampH)

K

COMP

boost(CV)

EAboost

OVP1

OVP1rst

sw(OVP1)

OVP2

OVP2_CNT

T

recovery

pullup

LFF

offset(MAX)

FF

HL

LL

HL(blank)

= 0 V, VCS = 0 V)

ZCD

2.06 2.2 2.34 V

− 240 − Vdc

− 230 − Vdc

3.41 3.52 3.63 V

40 50 60

− ±60 −

− 0.6 − V

4.05 4.12 4.25 V

4.01 4.12 4.25 V

− 4 −

2.796 2.975 3.154 V

2.96 3.15 3.34 V

− ±140 −

3.783 4.025 4.267 V

− 3.675 − V

− 1.5 − ms

4.253 4.525 4.797 V

− 4 −

− 4 − s

− 15 −

0.189 0.21 0.231

mA/V

76 95 114

35 40 45

228 240 252 V

218 230 242 V

15 25 35 ms

mS

mA

mA

kW

mA

mA

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NCL30488

ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T

For min/max values T

= −40°C to +125°C, Max TJ = 150°C, VCC = 12 V) (continued)

J

= 25°C, VCC = 12 V, V

J

= 0 V, VCS = 0 V)

ZCD

Parameter UnitMaxTypMinSymbolTest Condition

VALLEY LOCKOUT SECTION

Valley thresholds

st

to 2nd valley transition at LL and 2nd to 3rd valley

1
HL, V
2
HL, V
2
HL, V
3rd to 2nd valley transition at LL and 4th to 3rd valley
HL, V
3
HL, V
4th to 3th valley transition at LL and 5th to 4th valley
HL, V
4th to 5th valley transition at LL and 5th to 6th valley
HL, V
5th to 4th valley transition at LL and 6th to 5th valley
HL, V

V

V

decr. (prog. option: 3rd to 4th valley HL)

REF

nd

to 1st valley transition at LL and 3rd to 2nd valley

incr. (prog. option: 4th to 3rd valley HL)

REF

nd

to 3rd valley transition at LL and 3rd to 4th valley

decr. (prog. option: 4th to 5th valley HL)

REF

incr. (prog. option: 5th to 4th valley HL)

REF

rd

to 4th valley transition at LL and 4th to 5th valley

decr. (prog. option: 5th to 6th valley HL)

REF

incr. (prog. option: 6th to 5th valley HL)

REF

decr. (prog. option: 6th to 7th valley HL)

REF

incr. (prog. option: 7th to 6th valley HL)

REF

value at which the FF mode is activated V

REF

value at which the FF mode is removed V

REF

V

decreases

REF

increases

V

REF

V

decreases

REF

V

increases

REF

V

decreases

REF

V

increases

REF

V

decreases

REF

V

increases

REF

decreases V

REF

increases V

REF

V

VLY1−2/2−3

V

VLY2−1/3−2

V

VLY2−3/3−4

V

VLY3−2/4−3

V

VLY3−4/4−5

V

VLY4−3/5−4

V

VLY4−5/5−6

V

VLY5−4/6−5

FFstart

FFstop

−

0.80

−

0.90

−

0.65

−

0.75

−

0.50

−

0.60

−

0.35

−

0.45

− 0.25 − V

− 0.35 − V

V

−

−

−

−

−

−

−

−

FREQUENCY FOLDBACK

Added dead time

Added dead time V

Dead−time clamp ( option 1) V

Dead−time clamp ( option 2) V

Minimum added dead−time in standby V

Maximum added dead−time in standby (option 2) V

V

= 0.25 V t

REFX

= 0.08 V t

REFX

< 3 mV t

REFX

< 11.2 mV t

REFX

= 0 t

REFX

REFX

= 0, V

< 0.7 V t

COMP

FF1LL

FFchg

FFend1

FFend2

DT(min)SBY

DT(max)SBY2

0.8 1.0 1.2

− 40 −

− 675 −

− 250 −

− 650 −

− 1.8 − ms

ms

ms

ms

ms

ms

FAULT PROTECTION

Thermal Shutdown (Note 5) Device switching (F

around 65 kHz)

SW

Thermal Shutdown Hysteresis T

Threshold voltage for output short circuit or aux.
winding short circuit detection

Short circuit detection Timer V

ZCD

< V

ZCD(short)

Auto−recovery Timer t

Line OVP threshold VHV increasing V

HV pin voltage at which Line OVP is reset VHV decreasing V

Blanking time for line OVP reset T

T

SHDN

SHDN(HYS)

V

ZCD(short)

t

OVLD

recovery

HV(OVP)

HV(OVP)RST

LOVP(blank)

130 150 170 °C

− 20 – °C

0.6 0.65 0.7 V

70 90 110 ms

3 4 5 s

457 469 485 Vdc

430 443 465 Vdc

15 25 35 ms

BROWN−OUT AND LINE SENSING

Brown−Out ON level (IC start pulsing) VHV increasing V

Brown−Out ON level (IC start pulsing) option 2 VHV increasing V

Brown−Out OFF level (IC stops pulsing) VHV decreasing V

Brown−Out OFF level (IC stops pulsing) option 2 VHV decreasing V

HV pin voltage above which the sampling of ZCD is
enabled low line

HV pin voltage above which the sampling of ZCD is
enabled highline

V

decreasing, low line V

HV

V

decreasing, highline V

HV

ZCD sampling enable comparator hysteresis VHV increasing V

BO comparators delay t

Brown−Out blanking time t

HVBO(on)

HVBO(on)2

HVBO(off)

HVBO(off)2

sampENLL

sampENHL

sampHYS

BO(delay)

BO(blank)

101.5 108 114.5 Vdc

129.7 138 146.3 Vdc

92 98 104 Vdc

121 129 137 Vdc

− 55 − V

− 105 − V

− 5 − V

− 30 −

ms

15 25 35 ms

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.

5. Guaranteed by design.

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NCL30488

TYPICAL CHARACTERISTICS

5,4

5,3

5,2

5,1

5

(mA)

4,9

HV(start2)

4,8

I

4,7

4,6

4,5

−50 −25 0 25 50 75 100 125

TEMPERATURE (°C)

361

359

357

(V rms)

355

HV(OL)

353

V

351

Figure 3. I

HV(start2)

vs. Temperature Figure 4. I

309

304

299

(mA)

294

HV(start1)

I

289

284

−50 −25 0 25 50 75 100 125

TEMPERATURE (°C)

vs. Temperature

18,34

18,29

(V)

18,24

CC(on)

V

18,19

HV(start1)

349

−50 −25 0 25 50 75 100 125

TEMPERATURE (°C) TEMPERATURE (°C)

Figure 5. V

10,25

10,23

10,21

10,19

(V)

10,17

CC(off)

V

10,15

10,13

10,11

−50 −25 0 25 50 75 100 125

vs. Temperature Figure 6. V

HV(OL)

TEMPERATURE (°C) TEMPERATURE (°C)

Figure 7. V

vs. Temperature Figure 8. V

CC(off)

18,14

−50 −25 0 25 50 75 100 125

vs. Temperature

CC(on)

26,96

26,91

26,86

(V)

26,81

CC(OVP)

V

26,76

26,71

26,66

−50 −25 0 25 50 75 100 125

vs. Temperature

CC(OVP)

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