MCSH21B101K500CT [INFINEON]

Drives 1 x 70W HID lamp;


型号：	MCSH21B101K500CT
厂家：	Infineon
描述：	Drives 1 x 70W HID lamp
文件：	总30页 (文件大小：5594K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IRPLHID2A

HID Ballast for 70W Lamp Using the IRS2573D

Table of Contents

Page

1. Features...........................................................................................2

2. Overview ..........................................................................................3

3. Electrical Characteristic....................................................................4

4. Circuit Schematic .............................................................................5

5. Functional Description......................................................................7

6. Fault Conditions .............................................................................15

7. Dimensioning .................................................................................18

8. PCB Layout Considerations ...........................................................23

9. Bill of Materials...............................................................................24

10. IRPLHID2A PCB Layout...............................................................26

11. Inductor Specifications .................................................................28

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1. Features

 Drives 1 x 70W HID lamp

 Input voltage range: 185-265 VAC

High Power Factor / Low Total Harmonic Distortion



 Controlled ignition

 Low frequency square wave operation

 Lamp power and current control

 Open circuit and no-lamp protection

 Short circuit and lamp failure to warm-up protection

 Lamp end-of-life shutdown

 IRS2573DSPbF HID Ballast Control IC

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2. Overview

The IRPLHID2A reference design kit consists of a complete ballast solution for a 70W

HID lamp. The design contains an EMI filter, low voltage power supply, active power

factor correction and a ballast control circuit using the IRS2573D. This demo board is

intended to help with the evaluation of the IRS2573D HID ballast control IC, demonstrate

PCB layout techniques and serve as an aid in the development of production ballasts

using the IRS2573D.

Active PFC

Buck

EMI Filter

Rectifier

Control IC

Buck Control

Full-Bridge

Low

Voltage

Supply

Full-Bridge

Control

Power/Current

Control

Ignition

Switch

Ignition Control

EOL Control

Figure 2.1: IRPLHID2A Block Diagram

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3. Electrical Characteristic

Parameter

Lamp Power

Units

[W]

Value

Input Power

[W]

220

338

160

1.6

149

Input Voltage

Input Current

[VACrms]

[mArms]

[Vpp]

Lamp Running Voltage

Lamp Running Current

Output Frequency

Power Factor

Total Harmonic Distortion

Input AC Voltage Range

[App]

[Hz]

0.98 at 230 VAC

<10 at 230 VAC

185 - 265

[%]

[VACrms]

TABLE 3.1: Ballast Parameters.

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4. Circuit Schematic 1

Figure 4.1: IRPLHID2A Circuit Schematic 1

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Circuit Schematic 2

Figure 4.2: IRPLHID2A Circuit Schematic 2

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5. Functional Description

HID lamps have unique electrical characteristics, and require a careful control method.

Specifically, they require a high voltage for ignition, typically 3 kV to 4 kV, current

limitation during warm-up, and constant power control during running. It is important to

tightly regulate lamp power with respect to lamp voltage to minimize lamp-to-lamp color

and brightness variations. Also, HID lamps should be driven using an AC-voltage to

avoid mercury migration, and at a low frequency, typically less than 200 Hz, to prevent

lamp damage or explosion due to acoustic resonance. All of these requirements are

integrated in the IRS2573D.

Figure 5.1: HID lamp ignition, warm-up and running modes

The IRS2573D is a fully-integrated, fully-protected 600V HID control IC designed to drive

all types of HID lamps. Internal circuitry provides control for ignition, warm-up, running

and fault operating modes. The IRS2573D features include ignition timing control,

constant lamp power control, current limitation control, programmable full-bridge running

frequency, programmable over and under-voltage protection and programmable over-

current protection. Advanced protection features such as failure of a lamp to ignite,

open load, short-circuit and a programmable fault counter have also been included in the

design.

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5.1 IRS2573D State and Timing Diagram

Power Turned On

FAULT Mode

UVLO Mode

VCC < UVLO-

(VCC Fault or Power Down)

Fault Latch Set

Full-Bridge Off (CT=0V)

Buck Off

Full-Bridge Off (CT=0V)

Buck Off (ICOMP, PCOMP,

TOFF=0V)

VCC < UVLO-

(Power Off)

RST > VRST+

(Fault Reset)

IGN Timer Off (TIGN=0V)

CLK Off (TCLK=0V)

I_QCC 350A

IGN Timer Off (TIGN=0V)

CLK Off (TCLK=0V)

I_QCC 150A

VCC = 15.6V

All Counters Reset

Fault and Good Counters Reset

Fault Latch Reset

VCC > UVLO+

and

VOV(2/5) < VSENSE < VOV

VSENSE > VOV

and

RST < VRST-

and

PCOMP > 0.2V

and

ICOMP > 0.5V

IGN Mode

IGN (21s 'HIGH'/64s 'LOW')

Ignition Counter Enabled

Buck and Full-Bridge Enabled

CLK and Fault Counters Enabled

Good Counter Reset

VSENSE > VOV(2/5) for 787sec

(open circuit)

VSENSE OVP Enabled

VSENSE > VOV(2/5)

VSENSE < VOV(2/5)

VSENSE < VOV(1/7.5) for 197sec

(short circuit or does not warm up)

GENERAL Mode

Full-Bridge Oscillating @ f_BRIDGE

Buck Enabled

VSENSE < VOV(1/7.5) for 16384 Events

IGN 'LOW'

CLK and Fault Counters Enabled

VSENSE OVP Enabled

ISENSE Over-current Limitation Enabled

Constant Power Control Enabled

Good Counter = 2730sec

(No faults detected)

VSENSE > VOV

PCOMP < 0.2V

ICOMP < 0.2V

VSENSE < VOV(1/7.5)

Reset

Fault and Good

Counters

Reset

Good

Counter

BUCK OFF Mode

VSENSE < VOV(2/5)

and

PCOMP > 0.2V

Buck Off

Full-Bridge Oscillating

Fault Counters Enabled

and

ICOMP > 0.5V

Figure 5.2: IRS2573D state and timing diagram

5.2 Under-voltage Lockout (UVLO) Mode

The under-voltage lockout mode (UVLO) is defined as the state the IC is in when VCC is

below the turn-on threshold of the IC. The IC is designed to maintain an ultra-low supply

current during UVLO mode of 150uA, and to guarantee the IC is fully functional before

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the buck high-side and full-bridge high and low-side output drivers are activated. The low

voltage power supply is realized with buck converter circuit utilizing the Link Switch

LNK302D (Figure 4.1). Once the voltage on VCC reaches the start-up threshold

(UVLO+), voltage on VSENSE pin is above VOV threshold and the voltage on RST pin is

less than 1.5V, the IC turns on and the full-bridge oscillator (CT) and gate driver outputs

(HO1, LO1, HO2 and LO2) begin to oscillate. During UVLO mode, the full-bridge and

buck are off, the ignition timer and clock are off, the fault and good counters are reset,

and the fault latch is reset.

5.3 Ignition Mode

The ignition timer is enabled when the IC first enters IGN Mode. The ignition timer

frequency is programmed with the external capacitor at the TIGN pin. CTIGN charges up

and down linearly through internal sink and source currents between a fixed voltage

window of 2V and 4V (Figure 5.3). This sets up an internal clock (666ms typical) that is

divided out 128 times and then used to turn the ignition gate driver output (IGN pin) on

and off for a given on and off-time (21sec ‘high’/64sec ‘low’ typical). A logic ‘high’ at the

IGN pin will turn the external ignition MOSFET (MIGN) on and enable the external sidac-

controlled pulse ignition circuit.

666ms

typ.

TIGN

IGN

VLAMP

IGN ENABLED

(21s typ.)

IGN ENABLED

(21s typ.)

FAULT

MODE

IGN DISABLED

(64s typ.)

1180sec typ.

787sec typ.

Figure 5.3: Ignition Timer Timing Diagram

During the ignition phase, the lamp is an open circuit and the buck output voltage is

limited to a maximum value. The ignition circuit comprises of a diac (DIGN), transformer

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(LIGN), capacitor (CIGN), resistor (RIGN2) and switch (MIGN). When the IC turns on the

switch MIGN, capacitor CIGN discharges through resistor RIGN2. When the voltage

across DIGN reaches the diac threshold voltage (Figure 5.4), DIGN turns on and a

current pulse flows from the buck output, through the primary winding of LIGN and into

capacitor CIGN. This arrangement generates a high-voltage pulse on the secondary to

ignite the lamp. The capacitor CIGN charges up until the diac turns off, and CIGN then

discharges down through resistor RIGN until the diac voltage again reaches the device’s

threshold and another ignition pulse occurs.

VGATE:MIGN

VCBUCK

VCIGN

VDIAC

4KV

VLAMP

Figure 5.4: Ignition circuit timing diagram

The ignition circuit will continuously try to ignite the HID lamp for 21sec ‘on’ and 64sec

‘off’ until the lamp ignites. If the lamp does not ignite after 1180sec then the IC will enter

Fault Mode and latch off. If the lamp ignites successfully, the voltage at the VSENSE pin

will fall below VOV(2/5) due to the low impedance of the lamp and the ignition timer will

be disabled (logic ‘low’ at the IGN pin).

5.4 General Mode

During General Mode, the IC reacts to the different load conditions (open-circuit, short-

circuit, lamp warm-up, constant power running, under-voltage lamp faults, transient

under-voltage lamp faults, over-voltage lamp faults, lamp non-strike, etc.) by turning the

buck circuit on or off, adjusting the buck circuit on-time, or counting the occurrence of the

different fault conditions and turning the complete IC off. The IC senses the different

load conditions at the VSENSE and ISENSE pins, compares the voltages at these pins

against the programmed thresholds at the OV and OC pins, and determines the correct

operating mode of the IC (see State Diagram).

5.5 Full-Bridge Control

The IC includes a complete high and low-side full-bridge driver necessary for driving the

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HID lamp with an AC square-wave voltage. The full-bridge begins oscillating at the

programmed frequency immediately when the IC comes out of UVLO Mode and turns

on. The full-bridge is typically driven at a low frequency to prevent acoustic resonances

from damaging the lamp. The full-bridge frequency is programmed with the external

capacitor at the CT pin. CT charges up and down linearly through internal sink and

source currents between a fixed voltage window of 2V and 4V. CT reaching 4V initiates

the toggling of LO1/HO1, and LO2/HO2 respectively (see Figure 5.5). The dead-time is

fixed internally at 1.0us typical. During the dead-time, all full-bridge MOSFETs are off

and the mid-points of each half-bridge are floating or unbiased. Should an external

transient occur during the dead-time due to an ignition voltage pulse, each half-bridge

mid-point (VS1 and VS2 pins) can slew high or low very quickly and exceed the dv/dt

rating of the IC. To prevent this, internal logic guarantees that the IGN pin is set to a

logic ‘low’ during the dead-time. No ignition pulses can occur until the dead-time has

ended and the appropriate full-bridge MOSFETs are turned on. This will guarantee that

the mid-points are biased to the output voltage of the buck or COM before an ignition

pulse occurs. The full-bridge stops oscillating only when the IC enters Fault Mode or

UVLO Mode.

Figure 5.5: Full-bridge timing diagram: CH1 is CT pin voltage, CH2 is LO1 voltage, CH3 is LO2

voltage and CH4 is VS1 pin voltage

5.5 Buck Control

The buck control circuit operates in critical-conduction mode or continuous-conduction

mode depending on the off-time of the buck output or the peak current flowing through

the buck MOSFET (MBUCK). During normal lamp running conditions, the voltage

across the buck current sensing resistor, as measured by the CS pin, is below the

internal over-current threshold (1.2V typical). The buck on-time is defined by the time it

takes for the internal on-time capacitor to charge up to the voltage level on the PCOMP

pin or ICOMP pin, whichever is lower. During the on-time, the current in the buck

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inductor charges up to a peak level, depending on the inductance value, and the

secondary winding output of the buck inductor is at some negative voltage level,

depending on the ratio between the primary and secondary windings. The secondary

winding output is measured by the ZX pin, which clamps the negative voltage to a diode

drop below COM using the internal ESD diode, and limits the resulting negative current

flowing out of the pin with an external resistor, RZX. When the voltage on the internal

on-time capacitor exceeds the voltage on the PCOMP pin or ICOMP pin, the on-time has

ended and the buck output turns off.

The secondary winding output of the buck inductor transitions to some positive voltage

level, depending on the ratio between the primary and secondary windings, and causes

the ZX pin to exceed the internal 2V threshold. The current in the buck inductor begins

to discharge into the lamp full-bridge output stage. When the inductor current reaches

zero, the ZX pin decreases back below the 2V threshold. This causes the internal logic

of the buck control to start the on-time cycle again. This mode of operation is known as

critical-conduction mode because the buck MOSFET is turned on each cycle when the

inductor current discharges to zero. The on-time is programmed by the voltage level on

the PCOMP pin, and the off-time is determined by the time it takes for the inductor

current to discharge to zero, as measured by a negative-going edge on the ZX pin. The

resulting shape of the current in the inductor is triangular with a peak value determined

by the inductance value and on-time setting.

Figure 5.6: Buck control timing diagram (critical conduction mode): CH1 is TOFF pin voltage, CH2 is

ZX pin voltage, CH3 is Buck output voltage and CH4 is current through buck inductor LBUCK

During lamp warm-up or a short-circuit condition at the output, the inductor current will

charge up to an excessive level that can saturate the inductor or damage the buck

MOSFET. To prevent this condition, the buck current sensing resistor (RBCS) is set

such that the voltage at the CS pin exceeds the internal over-current threshold (1.2V

typical) before the inductor saturates. Should the CS pin exceed 1.2V before the internal

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on-time capacitor reaches the voltage level on the PCOMP pin or ICOMP pin, the on-

time will end and the buck output will turn off. The off-time is determined by a negative-

going edge on the ZX pin, or, if the maximum off time is reached as programmed by the

time it takes for the CTOFF on the TOFF pin to charge up to an internal threshold of 2V.

If the maximum off-time is reached before the inductor current discharges to zero, then

the inductor will begin charging again from some value above zero. This mode of

operation is known as continuous-conduction mode and results in a continuous DC

current in the inductor with a ripple bounded above by the over-current threshold and

below by the maximum off time setting (see Figure 5.7). Continuous-conduction mode

also allows for a higher average current to flow through the buck inductor before

saturation occurs than with critical-conduction mode.

CS = 1.2V

Figure 5.7: Buck control timing diagram (continuous conduction mode): CH1 is TOFF pin voltage,

CH2 is ZX pin voltage, CH3 is Buck output voltage and CH4 is current through buck inductor LBUCK

5.6 Constant Power Control

During the general mode of operation and after the lamp has ignited, the IC regulates

the lamp output power to a constant level. To achieve this, the IC measures the lamp

voltage and lamp current at the VSENSE and ISENSE pins, multiplies the voltage and

current together using an internal multiplier circuit to calculate power, and regulates the

output of the multiplier circuit to a constant reference voltage by increasing or decreasing

the buck on-time. If the lamp power is too low then the output of the multiplier will be

below the internal reference voltage. The operational trans-conductance amplifier (OTA)

will output a sourcing current to the PCOMP pin that will charge up the CPCOMP to a

higher voltage. This will increase the on-time of buck and increase the output current to

the lamp for increasing the output power. If the lamp power is too high, then the

opposite will occur. The OTA will output a sinking current to the PCOMP pin that will

discharge the CPCOMP to a lower voltage. This will decrease the buck on-time and

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decrease the output current to the lamp for decreasing the output power. The speed of

the constant power control loop is set by the value of the CPCOMP at the PCOMP pin

that determines how fast the loop will react and adjust the buck on-time over the

changing load conditions.

5.7 Current Limitation Control

The constant power control loop will increase or decrease the buck current for

maintaining constant power in the lamp load. During lamp warm-up, the lamp voltage

can be very low (20V typical) and the constant power loop will attempt to increase the

buck current to several amps of current to maintain constant power. This high current

can exceed the manufacturer’s maximum current rating for the HID lamp. To prevent

this condition, an additional current limitation control loop has been included in the IC

Should the voltage at the ISENSE pin exceed the voltage level at the OC pin, another

OTA will sink current from the ICOMP pin. When the ICOMP pin voltage decreases

below the PCOMP pin voltage, then the current limitation loop will override the constant

power loop and the ICOMP pin will decrease the buck on-time. The lower of the

PCOMP or ICOMP pins will override the other and control the buck on-time. When the

lamp eventually warms up and the lamp voltage increases to a level where the lamp

current is below the maximum allowable limit, then the ICOMP pin voltage will increase

above the PCOMP pin voltage, and the PCOMP pin will control the buck on-time again

for maintaining constant power.

5.8 Buck OFF Mode

The IC will enter the Buck-OFF Mode if any one of these 3 conditions occur:



VSENSE > VOV or

PCOMP < 0.2V or

ICOMP < 0.2V

When in the Buck-OFF Mode, the IC will go back to General Mode if all of these 3

conditions are valid:



VSENSE < VOV (2/5)

PCOMP > 0.2V

ICOMP > 0.5V

and

The IC will instead go back to Ignition Mode if all of these 3 conditions are valid:



VOV(2/5) < VSENSE < VOV

PCOMP > 0.2V

ICOMP > 0.5V

and

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6. Fault Conditions

In case of fault conditions such as open circuit, lamp removal, lamp extinguishes, short

circuit, end-of-life and lamp failure to warm-up, the IRS2573D will go into Fault Mode

after the fault timer times out. In this mode, the internal fault latch is set, full-bridge and

buck are off, ignition and fault timer are off, and the IRS2573D consumes an ultra-low

micro-power current. The IRS2573D can be reset with a fault reset (RST > VRST+) or a

recycling of VCC below and back above the UVLO thresholds. The fault timer is

programmed using the external capacitor CTCLK on the TCLK pin.

6.1 Over-Voltage Fault Counter

The IC includes an over-voltage fault counter at the VSENSE pin. In the IGN Mode, the

over-voltage fault counter will count the time during which an over-voltage condition at

the output of the buck exists due to an open-circuit condition, lamp extinguishes, lamp

removal or end-of-life. Figure 7.1 shows the waveforms when the ballast goes into Fault

Mode because of over-voltage fault. When the voltage at the VSENSE pin remains

above VOV (2/5) and the over-voltage fault counter times out (1180sec typical, with

CTCLK=0.18uF), the IC will enter Fault Mode and shutdown. Before the fault counter

times out, the ignition counter is enabled and the IC keeps trying to ignite the lamp for 21

sec ‘on’ and 64 sec ‘off’.

Figure 6.1: Over-voltage fault: CH1 is the VSENSE voltage, CH2 is IGN pin voltage, CH3 is VCC and

CH4 is LO voltage

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6.2 Under-Voltage Fault Counter

The IC also includes an under-voltage fault counter at the VSENSE pin. Once the lamp

has ignited, the lamp voltage will decrease sharply to a very low voltage (20V typical).

As the lamp warms up, the lamp voltage will slowly increase until the nominal running

voltage is reached (100V typical). If the lamp voltage remains too low for too long, then

this is a lamp fault condition and the ballast must shutdown. To detect this, the VSENSE

pin includes an under-voltage threshold of VOV(1/7.5). If the voltage at the VSENSE pin

remains below VOV(1/7.5) and the under-voltage fault counter times out (295sec typical,

with CTCLK=0.18uF), then the lamp is not warming up properly due to a lamp fault

condition (end of life, etc.) and the IC will enter fault mode and shutdown. If the voltage

at the VSENSE pin increases above VOV(1/7.5) before the under-voltage counter times

out, then the lamp has successfully warmed up and the IC will remain in general mode.

Figure 6.2 shows some waveforms when the ballast goes into Fault Mode due to under-

voltage fault.

Figure 6.2: Under-voltage fault: CH1 is TCLK pin voltage, CH2 is VSENSE voltage, CH3 is LO voltage

and CH4 is VCC voltage

6.3 Fast Transient Under-Voltage Fault Counter

During normal running conditions, fast transient under-voltage spikes can occur on the

lamp voltage due to instabilities in the lamp arc. The resulting transients on the

VSENSE pin will cycle below and above the VOV(1/7.5) threshold quickly (<50us). If the

number of events of these transients exceeds the maximum number of events of the

fault counter (16,384 events typical), then the IC will enter fault mode and shutdown.

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Figure 6.3: Under-voltage fault: CH1 is VSENSE voltage, CH2 is LO voltage, CH4 is VCC voltage and

CHA is zoom of VSENSE voltage

6.4 Good Counter

If no faults are detected for a long period of time (2730sec typical), as measured by the

good counter, then the fault counter and good counter will both be reset to zero. Also,

each time a fault is counted, the good counter is reset to zero.

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7. Dimensioning

7.1 Dimensioning: Basic settings

I_REFneeds to be set to the beginning, because I_REFis also used for other settings.

V_IREF

IREF



100A

(1)

RREF

20k

CT sets the full bridge frequency.

I_{CT,SOURCE/ SINK}

80A

868nF

fFB



147Hz

(2)

8C_CT

CTIGN sets the timing for the ignition pulses.

4CTIGN

I_{TIGN ,SOURCE/ SINK}

41000nF

^IGN^,^ON 32

 32

(3)

(4)

6A

IGN, OFF  TIGN, ON 3

CTCLK sets the time constants for the EOL (Under Voltage Fault/ Over Voltage Fault)

4CTCLK

I_{TCLK,SOURCE/ SINK}

4 270nF

40A

T_UVFAULT16,384

16,384

(5)

(6)

T_OVFAULT 4TUVFAULT

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7.2 Dimensioning: EOL settings

EOL Thresholds

50 µA

Buckvoltage

(Set in Basic Settings)

9.00

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

IRS2573D

100 K

VSENSE

36 V

VSENSE

180 K

7.5 K

13%

40%

120 K

100 150 200 250 300 350 400 450

Vbuck [V]

The IRS2573D uses VSENSE pin to detect if fault condition has occurred. The voltage on

the OV pin sets the reference for the EOL thresholds.

VSENSE <= VOV(1/7.5) → Lamp under voltage fault (13% of OV)

VSENSE >= VOV(2/5) → Lamp over voltage fault (40% of OV)

VSENSE >= VOV → Buck over voltage threshold (100% of OV)

During the ignition phase the buck voltage is regulated to OV (e.g. 330V). If the buck

voltage stays below 13% of OV for more than 442sec or above 40% of OV for 1769sec,

the ballast will go to Fault mode and latched (CTCLK=270nF).

7.3 Dimensioning: Buck settings



Lamp parameter

Start with the lamp parameter:

P_LAMP=73W

V_LAMP=100V

I_LAMP=0.73A



Buck current sensing resistor

Buck inductor over-current protection is setup by buck current sensing resistor:

I_OC 0.9A

I_OC,PEAK 2I_OC1.8A

(7)

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V_CS

1.2V

1.8A

RBCS



 0.667

(8)

OC, PEAK



Buck inductor value

Select input voltage for the buck, which is the bus voltage provided by boost PFC

stage:

V_BUS 400V

Select nominal frequency of the buck:

f  70kHz

Calculate buck inductor value based on nominal frequency, lamp current, buck input

and output voltage:





V_OUT

V_BUS





L 

1

V_OUT 733H

(9)

2 I_LAMP





where T 

and V_OUT V_LAMP

Buck inductor selection value:

L  750H



Buck off-time programming capacitor

Determine buck output minimum voltage (lamp minimum voltage after ignition):

V_{OUT ,MIN} 20V(typical)

Calculate buck minimum frequency in critical conduction mode:







²





V_{OUT ,MIN}

f_MIN

V_{OUT ,MIN}



I_OC,PEAK L

V_BUS





20²







20 

14kHz

(10)

1.8750e 6

400





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Calculate t_OFF

V_{OUT ,MIN}

1

V_BUS

t_OFF





400

 68s

(11)

Calculate C_TOFF

I_REF t_OFF

C_TOFF



V_TOFF

100A68s

 3.4nF

(12)

Off-time programming capacitor selection value:

C_TOFF 3.3nF



Current sense and over-current resistor value:

Calculate the nominal value on VSENSE pin (based on nominal lamp voltage):

RVS 4

V_SENSE,NOMV_LAMP,NOM



RVS1 RVS 2 RVS 3 RVS 4

7.5k

100

1.6V

(13)

180k 180k 100k  7.5k

Calculate the nominal value on ISENSE pin:

SENSE

V_ISENSE,NOM



V_SENSE,NOM

0.5

 0.31V

(14)

1.6

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Calculate the value of current sense and over current resistors:

V_ISENSE,NOM

R_CS



 0.43

(15)

(16)

I_LAMP

1.6 I_OC R_CS

0.5 I_REF

R_OC

 12.4k

Over-current resistor selection value:

R_OC13k

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8. PCB Layout Considerations

2. Filter and Bootstrap Capacitors

1. Sensitive Timing Components

(inside black box)

3. Signal

Ground

4. Power Ground

1. The programming and timing components should be placed close to the IC with

short traces and with ground connections directly to COM-pin (Pin 6).

2. The filter and bootstrap capacitors should also be placed close to the IC with

short tracks.

3. All signal ground connections should go directly to the COM pin.

4. There is only one connection from the IC COM to the power ground.

The power ground connections should also be as short as possible and with

bigger track size.

Disclaimer

This reference design is intended for evaluation purposes only and has not been

submitted or approved by any external test house for conformance with UL or

international safety or performance standards. International Rectifier does not guarantee

that this reference design will conform to any such standards.

www.irf.com

- 23 -

9. Bill of Materials

Item # Qty Manufacturer

Part Number

IRS2505L

Description

SOT-23 PFC IC

Reference

Power

Integration

IC1

IC2

IC3

LNK302DN

Link Switch LNK

IRS2573D

IRF840

IRF830

HID Ballast Control IC

MOSFET 500V/600V

MOSFET 500V

MBUCK

MPFC

MIGN, MH1, ML1,

MH2, ML2

DBUCK

DBUCK1

DVBB2

IRGR3B60KD2

IGBT 600V

Vishay

8ETH06

LL4148

BZT52C15

BZT52C36

DF10S

Diode 600V

Diode, 75V, 100mA

Zener Diode, 15V, 500mW

Zener Diode, 36V, 500mW

Bridge Rectifier 1A, 1000V

DVS1

BR1

Diodes Inc.

D3, DVBB1,

DLNK1, DLNK2,

DCS

Diodes Inc.

MURS160

Diode, 600V, 1A, SMB

Schindengen

Würth

Elektronik

Würth

Elektronik

Würth

Elektronik

Panasonic

Epcos

Panasonic

Vishay

Epcos

Roederstein

Wima

K1V26

Sidac 240V-270V

DIGN

760801032

Buck Inductor 0.75mH EE20/10/11

LBUCK

LPFC

LIGN

760801070

760370109

PFC Inductor 1.5mH EE20/10/11

Ignition Transformer 1mH EE25/13/7

ELF-15N007A

B82144B1225J000

ECQ-E4105KF

2222 338 20334

B32652A6104J

WY0222MCMBF0K

MKP10 1nF/630V

ECE-A1EN330U

EEU-EB2W220S

ECA-1HM100I

EMI Inductor

HF-Inductor

LLINK1

CBUCK

C1,C2

CIGN

COUT

CLNK3

CBUS

CLNK2

Capacitor 1µF/400V

Capacitor 330nF/275VAC X2

Capacitor 100nF/630V

Capacitor 2.2nF/275VAC Y Cap

Capacitor 1nF/630V

Capacitor 33µF/25V

Capacitor 22µF/450V

Capacitor 10µF/50V

Panasonic

CVB1, CVB2,

CVBB

CTIGN

CPFC2

CTCLK

Panasonic

ECJ-3YF1E225Z

Capacitor, 2.2uF, 25V, 1206

Panasonic

Multicomp

ECJ-3YB1E105K

MC0805B474K160CT

MC0805B274K160CT

MC0805B224K250CT

Capacitor, 1uF, 25V, 1206

Capacitor, 470nF, 25V, 0805

Capacitor, 270nF, 16V, 0805

Capacitor, 220nF, 25V, 0805

CPFC1

CVCC1, COV,

COC, CISENSE,

CLINK1, CPFC4

CCT

Panasonic

ECJ-2YB1H104K

Capacitor, 100nF, 50V, 0805

Panasonic

ECJ-2YB1H683K

ECJ-2VB1H333K

Capacitor, 68nF, 50V, 0805

Capacitor, 33nF, 50V, 0805

CPCOMP

Panasonic

ECJ-2VB1H223K

Capacitor, 22nF, 50V, 0805

CVS, CPFC3

Panasonic

Multicomp

Panasonic

ECJ-2VB1H332K

ECJ-2VB1H102K

ECJ-2VC1H471J

MCSH21B101K500CT

ECJ-2VC1H100D

Capacitor, 3.3nF, 50V, 0805

Capacitor, 1nF, 50V, 0805

Capacitor, 470pF, 50V, 0805

Capacitor, 100pF, 50V, 0805

Capacitor, 10pF, 50V, 0805

CTOFF

CICOMP

CCS1

CPFC5

CRZX

www.irf.com

- 24 -

Panasonic

ERJ-8ENF8203V

ERJ-8ENF1803V

ERJ-6ENF1203V

ERJ-8ENF1003V

Resistor, 820kOhm, 0.25W, 1%, 1206 RPFC4, RPFC5

Resistor, 180kOhm, 0.25W, 1%, 1206 RVS1, RVS2

Resistor, 120kOhm, 0.125W,1%,0805 ROV

Resistor, 100kOhm, 0.25W, 1%, 1206 RVS3

RBB1, RBB2,

Panasonic

ERJ-8ENF6802V

Resistor, 39kOhm, 0.25W, 1%, 1206

RBB3, RBB4,

RBB5

Panasonic

ERJ-6ENF3302V

ERJ-6ENF2202V

Resistor, 33kOhm, 0.125W, 1%, 0805 RZX

Resistor, 22kOhm, 0.125W, 1%, 0805 RPFC1

Panasonic

ERJ-6ENF2002V

ERJ-6ENF1602V

ERJ-6ENF1502V

ERJ-6ENF1302V

ERJ-6ENF7501V

ERJ-8ENF3301V

ERJ-6ENF2202V

Resistor, 20kOhm, 0.125W, 1%, 0805 RIREF

Resistor, 16kOhm, 0.125W, 1%, 0805 RPFC6

Resistor, 15kOhm, 0.125W, 1%, 0805 RLNK2

Resistor, 13kOhm, 0.125W, 1%, 0805 ROC

Resistor, 7.5kOhm, 0.125W, 1%,0805 RVS4

Resistor, 3.3kOhm, 0.25W, 1%, 1206

RLNK3

Resistor, 2.2kOhm, 0.125W, 1%,0805 RLNK1

RISENSE,

Panasonic

ERJ-6ENF1001V

Resistor, 1kOhm, 0.125W, 1%, 0805

RCCS1, RPFC3

RBUCK1, RPFC2,

RIGN1, RHO1,

RLO1, RHO2,

RLO2

RVBB1, RVCC

RBCS1, RBCS2,

RBCS3, RBCS4,

RBCS5, RCS1,

RCS2, RCS3

RCS4, RCS5,

RCS6

Panasonic

ERJ-S06F22R0V

ERJ-S06F10R0V

ERJ-8RQF3R3V

Resistor, 22Ohm, 0.125W, 1%, 0805

Resistor, 10Ohm, 0.125W, 1%, 0805

Resistor, 3.3Ohm, 0.25W, 1%, 1206

Panasonic

ERJ-8RQF2R2V

Resistor, 2.2Ohm, 0.25W, 1%, 1206

Panasonic

ERJ-8RQF1R0V

PR03000201802JAC00

Resistor, 1Ohm, 0.25W, 1%, 1206

Resistor 0R Jumper 1206

Resistor 18K/3W

RPFC7, RPFC8

ROUT

RIGN2

Vishay

Phoenix

Contact

Multicomp

MTSB 1.5/3-5.08

3-pin Connector

X1, X2

MC33282

Heatsink, TO-220

Radial Fuse, T 2A

Test Points

DBUCK, MBUCK

CLNK4, DHO1,

DHO2, DLO1,

DLO2, LOUT

Do not populate

TABLE 9.1: IRPLHID2A Bill of Materials.

www.irf.com

- 25 -

10. IRPLHID2A PCB Layout

Top Assembly

Top Copper

www.irf.com

- 26 -

Bottom Assembly

Bottom Copper

www.irf.com

- 27 -

11. Inductor specification

Würth Elektronik PN 760801032

www.irf.com

- 28 -

Würth Elektronik PN 760801070

www.irf.com

- 29 -

Würth Elektronik PN 760370109

www.irf.com

- 30 -

MCSH21B101K500CT [INFINEON]

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