NCL30060LED1GEVB Datasheet NCL30060LED1GEVB | P10-P12

NCL30060GEVB

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boards can be connected in parallel allowing control of

many lighting fixtures from one variable dc supply.

The dimming interface will also support dimming control

using a potentiometer noting that the evaluation board

interface is capable of sourcing 10 V. (Note, a logarithmic

taper potentiometer is suggested for more proportional light

control with potentiometer setting.) Multiple fixtures can be

connected together when using a potentiometer; however

the adjustment region will be more compressed. This is due

to multiple LED drivers where each dimming interface is

contributing some current to the same potentiometer.

An alternate approach to a potentiometer is a commercial

1−10 V dimming control. An example of this control is

a potentiometer which has a transistor follower as a current

buffer to minimize the effect of current sourced from

multiple dimming interface circuits. The 1−10 volt dimming

interface will work with all three control methods.

The 1−10 volt dimming control injects a proportional

signal into the current feedback loop essentially subtracting

the control input proportionally from the feedback required

from the LED current sense resistor. This provides a stable

wide-range dimming control. 10 volts on the input provides

zero output from the summing amplifier U41. R45 in

conjunction with R44 and R46 results in zero current

through R36 which means no modification to the current

feedback. Therefore, full LED is applied to the load.

A voltage higher than 10 V has no effect on the feedback

loop. Maximum voltage at the dimming control input is

15 V.

As the dimming control voltage is reduced, U41 amplifies

the signal and raises the voltage on R36, which

proportionally reduces the feedback signal from the sense

resistor. U42 clamps this summed signal to 2.5 V when the

dimming input is lowered to 1 V. Further reduction in

dimming input voltage will have no effect due to the

clamping of U42. The value of R36 determines the

minimum current flowing through the LED load.

The formula to calculate R36 is given below:

U42

* K

K * I

LED

(eq. 2)

Where:

K + V

) R

(eq. 3)

For the example evaluation board with minimum LED

current of 120 mA, R36 is approximately 1 MW.

PWM Dimming

Components to support a PWM dimming input can be

placed on the NCL30060 evaluation board in the designated

area. Components used for 1−10 V dimming must be

removed when using the PWM dimming input.

The evaluation board converts the PWM signal to an analog

level. Therefore the LED current responds to the average

duty factor of the PWM signal being subtracted from the full

LED current. For example, a PWM signal which is at the

high state for 10% will result in 90% of the full LED current.

A PWM signal which is at the high state 70% of the time will

result in an LED current of 30% of maximum.

U31 is a Schmitt trigger buffer which receives the PWM

signal providing a fixed amplitude square wave with fast rise

and fall times. R33 and C31 filter the PWM signal to an

average level which is then impressed on R36. Since the

PWM input is converted to an analog voltage to linearly dim

the LED current, the PWM frequency is not critical. PWM

frequencies from 100 Hz up to 20 kHz are acceptable.

The control method functions the same as with the 1−10 V

dimming.

R31 and D31 limit the PWM dimming signal to 5.1 V

protecting the input of U31. 12 V is the maximum input. R2

ensures if no PWM signal is applied, the LED current will

be at the maximum level. R34 sets the maximum level when

duty factor is 0%. If R34 is omitted, the maximum LED

current will be slightly higher than the target value without

the PWM dimming circuit.

“Clamp”

There is an area on the bottom side of the PCB labeled

“Clamp”. These component locations are reserved for

a future enhancement. The demo board is shipped without

populating this area.

NCL30060GEVB

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Table 2. BILL OF MATERIALS

Designator Qty. Description Value Tolerance Footprint Manufacturer

Manufacturer

Part Number

Substi-

tution

Allowed

CY 1 Capacitor, Y5U X1Y1 4.7 nF, 250 VAC 20% Radial Panasonic CD16-E2GA472MYNS Yes

CX1 0 DNP − − Box − − −

CX2 1 Metallized Polyester

Film X1

47 nF, 300 VAC 20% Box Panasonic ECQ-U3A473MG Yes

C2 1 Ceramic 4700 pf, 500 V 10% 1206 TDK CGJ5H4X7R2H472K115AA Yes

C1 1 Metallized Polyester

Film X1

220 nF, 300 VAC 20% Box Panasonic ECQ-U2A224ML Yes

C4 1 Ceramic COG 1 nF, 50 V 10% 0603 TDK C1608COG1H102K080AA Yes

C7 1 Ceramic COG 100 pF, 50 V 5% 0603 TDK C1608COG1H101J080AA Yes

C6 1 Ceramic

10 mF, 35 V

15% 1206 TDK C3216X7R1V106M Yes

C8 1 Ceramic X7R 220 nF, 50 V 10% 1206 TDK C3216X7R1H224K115AA Yes

C9 1 Ceramic X7R 100 nF, 50 V 10% 0603 TDK C1608X7R1H104K080AA Yes

C11, C12 2 Aluminum Electrolytic

680 mF, 63 V

20% Radial Nichicon UPW1J681MHD6 Yes

C13 1 Ceramic NPO 22 pF, 50 V 5% 0603 TDK C11608C0G1H220J080AA Yes

D1, D2,

D3, D4

4 Rectifier 1000 V, 1 A − SMA ON Semiconductor MRA4007T3 No

D5 1 Fast Rectifier 1 A 1000 V − SMA Micro Commercial ES1M Yes

D6, D7 2 Diode 250 V, 200 mA − SOD123 ON Semiconductor MMSD103T1G No

D8 1 RECTIFIER 200 V, 3 A − DPAK ON Semiconductor MURD320T4G No

D9 1 Diode 70 V, 200 mA − SOT23 ON Semiconductor BAW56LT1G No

D10 1 ZENER, Low Current 17 V 5% SOD123 ON Semiconductor MMSZ4704T1G No

D12 1 Diode 250 V, 200 mA − SOD123 ON Semiconductor MMSD103T1G No

D13 1 Schottky Rectifier 10 V, 2 A − SMA ON Semiconductor MBRA210LT3G No

F1 1 Slow Blow TE5 Series 1A − Axial Littelfuse 36911000440 Yes

J1, J2 2 2 Position Terminal Block − − Through

Hole

Wiedmuller 1716020000 Yes

L2 1 Dual Coil

6 mH, 1.6 W,

500 mA

10% Through

Hole

Wurth Midcom 750311895 Yes

L3 1 Drum Inductor 2.2 mH 10% Through

Hole

Wurth Midcom 768772222 Yes

Q1 1 N-Channel MOSFET

800 V 6 A 0.9 W

− DPAK Infineon SPD06N80C3 Yes

Q1A 1 DNP − − TO-220 − − −

Q3 1 NPN Transistor 140 V, 600 mA − SOT23 ON Semiconductor MMBT5550LT1G No

Q5 1 NPN Driver Transistor 80 V, 500 mA − SOT23 ON Semiconductor MMBTA06LT1G No

RV1 1 Varistor 300 V, 25 J − Radial Littelfuse V300LA4P Yes

R1, R1A,

R2, R6

4 Resistor

5.6 kW, 1/10 W

5% 0603 Panasonic ERJ-3GEYJ562V Yes

R4 1 Resistor

100 kW, 1/4 W

5% 1206 Various Various Yes

R7 1 Resistor

5.76 kW, 1/4 W

1% 1206 Various Various Yes

R10 1 Resistor

51 kW, 1/10 W

1% 0603 Various Various Yes

R11 1 Resistor

1kW, 1/10 W

1% 0603 Various Various Yes

R12 1 Resistor

0.1 W, 1/4 W

1% 1206 Rohm Semi MCR18EZHFLR100 Yes

R13 1 Resistor

1kW, 1/10 W

1% 0603 Various Various Yes

R14 1 Resistor

22 kW, 1/4 W

5% 1206 Various Various Yes

R15 1 Resistor

22 kW, 1/10 W

1% 0603 Various Various Yes

R16 1 Resistor

16 kW, 1/10 W

1% 0603 Various Various Yes

R17 1 Resistor

200 W, 1/10 W

1% 0603 Various Various Yes

R18 1 Resistor

470 W, 1/10 W

1% 0603 Various Various Yes

R19, R23 2 Resistor

24 kW, 1/10 W

1% 0603 Various Various Yes

R22 1 Resistor

1kW, 1/10 W

1% 0603 Various Various Yes

R24 1 Resistor

0.1 W, 1/4 W

1% 1206 Rohm Semi MCR18EZHFLR100 Yes

R36 1 Resistor

1MW, 1/10 W

1% 0603 Various Various Yes

T1 1 Transformer, 25 W XFMR − EFD25 Wurth Midcom 750314098 Rev01 Yes

NCL30060GEVB

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Table 2. BILL OF MATERIALS (continued)

Designator

Substi-

tution

Allowed

Manufacturer

Part Number

ManufacturerFootprintToleranceValueDescriptionQty.

U1 1 Single Stage PFC LED

Driver

NCL30060 − SOIC7 ON Semiconductor NCL30060 No

U2 1 Opto Coupler 80 V, 50 mA − SMT4 NEC Electronics PS2513L-1-A Yes

U3 1 Dual Op Amp LM2904 − SOIC8 ON Semiconductor LM2904DR2G No

U4 1 Programmable

Reference

NCP431AVSN 1% SOT23 ON Semiconductor NCP431AVSNT1G No

1−10 V DIMMING INTERFACE

C41, C43 2 Ceramic COG 1 nF, 50 V 10% 0603 TDK C1608COG1H102K080AA Yes

C42 1 Ceramic X7R 100 nF, 50 V 10% 0603 TDK C1608X7R1H104K080AA Yes

J31 1 2 Pin Connector 2.54MM Pitch − Through

Hole

On Shore

Technology

OSTVN02A150 Yes

Q41 1 NPN Driver Transistor 80 V, 500 mA − SOT23 ON Semiconductor MMBTA06LT1G No

R41 1 Resistor

10 kW, 1/10 W

1% 0603 Various Various Yes

R42 1 Resistor

1MW, 1/10 W

1% 0603 Various Various Yes

R43 1 Resistor

287 kW, 1/10 W

1% 0603 Various Various Yes

R44 1 Resistor

2.2 kW, 1/10 W

1% 0603 Various Various Yes

R45 1 Resistor

220 kW, 1/10 W

1% 0603 Various Various Yes

R46 1 Resistor

6.2 kW, 1/10 W

1% 0603 Various Various Yes

R47 1 Resistor

75 kW, 1/10 W

1% 0603 Various Various Yes

R48 1 Resistor

3.16 kW, 1/10 W

1% 0603 Various Various Yes

R49 1 Resistor

22 kW, 1/10 W

1% 0603 Various Various Yes

R50 1 Resistor

22 kW, 1/4 W

5% 1206 Various Various Yes

U41 1 op amp TLV271 − TSOP-5 ON Semiconductor TLV271SN1T1G No

U42, U43 2 Programmable

Reference

NCP431AVSN 1% SOT23 ON Semiconductor NCP431AVSNT1G No

OPTIONAL PWM DIMMING INTERFACE (DNP)

C31 0 Ceramic X7S, DNP

10 mF, 6.3 V

20% 0603 TDK C1608X7S0J106M080AC Yes

D31 0 ZENER, low current,

DNP

5.1 V 5% SOD123 ON Semiconductor MMSZ4689T1G No

R31 0 Resistor, DNP

1kW, 1/10 W

1% 0603 Various Various Yes

R32 0 Resistor, DNP

1MW, 1/10 W

1% 0603 Various Various Yes

R33 0 Resistor, DNP

10 kW, 1/10 W

1% 0603 Various Various Yes

R34 0 Resistor, DNP

330 kW, 1/10 W

1% 0603 Various Various Yes

R35 0 Resistor, DNP

22 kW, 1/4 W

5% 1206 Various Various Yes

U31 0 Schmitt Buffer, DNP NL17SZ17 − SC-88A ON Semiconductor NL17SZ17DFT2G No

U32 0 Programmable

Reference, DNP

NCP431AVSN 1% SOT23 ON Semiconductor NCP431AVSNT1G No

NOTE: All devices are Pb-Free

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