BCR601_技术文档

BCR601 hot plug IC with voltage feedback to primary

side

60V linear LED controller IC for dimmable LED driver with ripple suppression, overvoltage,

overtemperature and hot plug protection

Features

•

Supply voltage 8 V to 60 V,

Supports use of NPN bipolar transistors and NMOSFETs,

100 Hz/120 Hz supply voltage ripple suppression,

Supports an optocoupler voltage feedback loop to primary side minimizing power

losses,

•

3% analog dimming of LED current by a resistor or DC voltage at the MFIO pin,

R_setfunctionality at MFIO pin,

LED current precision ±3%.

Protection features

•

Hot plug protection to minimize LED inrush current,

Overvoltage protection,

Overtemperature protection.

Target applications

•

LED driver.

Advantages with respect to discrete solutions

•

Low BOM count,

Lower assembly cost,

Smaller form factor,

Higher reliability due to less parts and soldering joints.

Product validation

Qualified for industrial applications according to the relevant tests of JEDEC47/20/22.

Datasheet

www.infineon.com

Please read the Important Notice and Warnings at the end of this document

Revision 1.1

2018-12-3

BCR601 hot plug IC with voltage feedback to primary side

Device information

8

7

6

5

1

2

3

4

VDROP

DRV

OVP

VS

GND

OPTO

MFIO

VSENSE

Figure 1

Pin definition PG-DSO-8 pin out

Table 1

Type

Part information

Package

Configuration

Marking code

60V Linear Voltage and

Current Control Chip

BCR601

PG-DSO-8

n.a.

BCR601

Description

BCR601 is a linear LED controller IC regulating the LED current by means of an external driver transistor. BCR601

supports use of NPN bipolar transistors and NMOS MOSFETs to cover a wide LED current and power range.

BCR601 provides feedback to the primary side via an optocoupler to control the output voltage of the primary

side converter, e.g. a flyback. The control loop minimizes the voltage overhead and power dissipation of the

external driver transistor. The voltage overhead can be adjusted by external configuration according to

application needs.

BCR601 suppresses the voltage ripple of the power supply driving a constant LED current for better light quality.

The LED current is fully scalable by dimensioning an external current sense resistor.

The embedded hot plug protection allows plug in and plug out of the LED load during operation reducing LED

current overshoots and related LED life time degradations.

The adjustable overvoltage protection will provide feedback to the primary side by the optocoupler in case the

supply voltage exceeds the threshold.

The overtemperature protection will dim the LED current if the BCR601 junction temperature threshold is

exceeded. In this case the LED current will be reduced to 30% of the nominal current. Once the junction

temperature drops below the temperature hysteresis nominal LED current is resumed.

The BCR601 is a perfect fit for LED applications by combining small form factor with low cost. Through its higher

integration, BOM savings and ensuring long lifetime of LEDs, this controller has many advantages compared to

discrete solutions.

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Table of contents

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Target applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Advantages with respect to discrete solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Device information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1

2

3

4

5

6

7

8

Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Datasheet

3

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BCR601 hot plug IC with voltage feedback to primary side

Pin configuration

1

Pin configuration

8

7

6

5

1

VDROP

DRV

OVP

2

VS

3

GND

OPTO

4

VSENSE

MFIO

Figure 2

Table 2

Pin definition PG-DSO-8 pin out

Pin configuration

Pin no.

Pin name

OVP

Pin type

Input

Function

1

2

3

4

5

6

7

8

Supply voltage measurement for overvoltage protection

Supply voltage

VS

Input

OPTO

MFIO

Output

Input

Output to control the optocoupler current

Multifunctional IO for resistive and DC voltage dimming

Measurement of V_sensevoltage

VSENSE

GND

Input

GND

IC ground

DRV

Output

Input

Driver output to control base or gate of the external transistor

Measurement of Vdrop voltage

VDROP

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Functional description

2

Functional description

C_in1

R_pred

R_OVP1

R_OVP2

C_OVP

Controller

IC

R_Zener

R_DROP

R_OPTO

VDROP

DRV

OVP

VS

ZD₁

C_OPTO

OR

BCR601

GND

OPTO

VSENSE

DAC

MFIO

Rset

R_sense

R_PI

C_PI

Figure 3

Typical application circuit

Application hints

1.

External driver transistors

BCR601 is able to drive NPN transistors as well as NMOSFETs. NPN transistors can be used for LED

currents up to several hundred of mA while NMOSFETs are preferable for high LED currents. The smaller

current using BJTs is caused by the DC current gain value h_FEvalue of the used BJT. E.g. a typical h_FEof 75

limits the application to a maximum below 750 mA.

2.

Supply voltage of BCR601

To drive higher output currents into an external NPN driver transistor it might be necessary to limit the

supply voltage of BCR601 significantly below 60 V to reduce power dissipation inside the IC. This can be

achieved either by adding a series resistor R_predbetween supply voltage and VS pin of BCR601 or by

operating BCR601 by an auxiliary winding of the power supply providing a lower IC supply voltage as e.g.

8 V.

Dimming mechanism

For dimming of the LED current a DC voltage is applied to the MFIO input signal.

1.

Analog dimming: input voltage V_MFIOat pin MFIO. Continuous dimming from 3% dimming level up to

100% is embedded into a 100% ceiling plateau and an hysteresis range to oﬀ. Static dimming to a fixed

value can be done via the resistor R_set

.

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Functional description

I_LED

100%

Analog dimming range

3%

0%

V_MFIO

3%

dim

100%

off

0.1V 0.2V

3.3 V

5 V

Figure 4

Analog dimming

2.

For analog dimming using R_setand internal MFIO current, the internal pull-down has to be taken into

account. For proper dimensioning refer to Figure 5.

5 V

BCR601

I_MFIO,setcs

MFIO

R

_MFIO/2

Rset

Limiter,

Buffer

R

_MFIO/2

R_set* R_MFIO

R_set+ R_MFIO

V_MFIO= I_{MFIO, setcs}

V_MFIO* R_MFIO

I_{MFIO, setcs}* R_set− V_MFIO

R_set

=

Figure 5

R_setdimensioning for resistor dimming

•

R_MFIO.typical= 285 kΩ,

I_{MFIO,setcs,typical}= 20 µA.

Datasheet

6

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BCR601 hot plug IC with voltage feedback to primary side

Functional description

V

_drop/ V_sensemeasurement

I_LED

R_DROP

V_drop

V_C/D

VDROP

VSENSE

V_sense

R_sense

I_drop

Figure 6

BCR601 incorporates two control loops:

1. Fast LED current control loop

VDROP versus VSENSE measurement

In a proper design, the converter output voltage ripple will drop across the external power transistor

(drain voltage V_C/D) and “consumed” by the power transistor, so that the voltage across the LED string is

constant. The LED current is sensed by the current sense resistor R_sense. The fast LED current control loop

regulates the power transistor to keep the LED current constant. LED current is defined by the equation.

I_LED= V_sense/R_sense

V_C/Dneeds to be set high enough to make sure that BCR601 can regulate the power transistor to conduct

a constant LED current. To enable adjustment of V_C/DBCR601 has an integrated constant current sink

I_dropat pin VDROP. By the external resistor R_DROPthe collector/drain voltage V_C/Dwith respect to V_dropis

defined by the following equation.

V_C/D= V_drop+ I_drop⋅ R_DROP

If V_C/Dis chosen too low, LED current will drop because either NPN h_FEwill drop too low and BCR601 I_DRV

reaches its maximum sourcing current, or NMOSFET drain to source resistance R_DSoncannot be reduced

further more as V_DRVof BCR601 reaches its upper limit . As a result the output voltage ripple will

modulate the LED current and flicker might become visible. If V_C/Dis chosen too high, power loss in the

external power transistor will be high, resulting in low power eﬀiciency and increased eﬀort in heat

dissipation of the power transistor.

2.

Slow control loop for the primary side output voltage

In typical application, the primary side controller is integrated with active PFC function. The output

voltage contains an unavoidable ripple of 100 Hz (at 50 Hz grid) or 120 Hz (at 60 Hz grid). The crossover

frequency of the control loop must be much smaller than the ripple frequency, so that the ripple voltage

is not regulated and the power factor is not deteriorated. This is realized by the RC compensation

network (R_PI, R_DROP, C_PIand C_DROP) connected between OPTO pin and VDROP pin.

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Thermal characteristics

3

Thermal characteristics

Figure 7

Maximum permitted eﬀective output source current out of pin DRV into external driver

transistor for a design example of 4 mA DC driver

The maximum permitted eﬀective driver source current shown in Figure 7 can be calculated by following

equation:

T

− T

V

I

OTP, min

A

S

OPTO

⋅

2

− V_S⋅ I_S−

R

2

T_{OTP, min}− T_A

V_S⋅ R_thJA

I_OPTO

4

thJA

I_DRV

=

− I_S−

V_S

The equation considers the power dissipation caused by current consumption of the IC itself and the

optocoupler current. If driver current exceeds the calculated threshold the lower specified limit of the

overtemperature protection will be exceeded and OTP might be triggered.

T_{OTP,on, min}

The lower spec limit of the overtemperature protection threshold should not be exceeded to

avoid triggering the OTP.

I_OPTO

The maximum optocoupler sink current into pin OPTO when IC fully turns on the current sink.

Besides the spec limits of BCR601 the maximum current is also limited by the optocoupler

supply voltage and external pull-up resistor.

Datasheet

8

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BCR601 hot plug IC with voltage feedback to primary side

Absolute maximum ratings

4

Absolute maximum ratings

Table 3

Maximum ratings

Parameter

Symbol

Values

Typ.

Unit

Note or test condition

Min.

–40

Max.

160

Junction temperature

Supply voltage

T_J

–

-

°C

V

–

-

V_S

0

–

65

Input voltage at pin VDROP

V_DROP

65

V

Input voltage at pin VSENSE V_sense

3.6

65

V

Input voltage at pin OPTO

Input voltage at pin OVP

Input voltage at MFIO

Power dissipation

V_OPTO

V_OVP

V_MFIO

P_tot

V

3.6

5.0

360

V

–

mW

V_S= 60 V, I_S= 2 mA, I_DRV=

- 4 mA

ESD robustness

V_ESD,HBM

V_ESD,CDM

–

-

–

-

1.5

kV

V

HBM acc. to JEDEC

JS-001

500

CDM acc. to JEDEC

JS-002

Attention: Stresses above the maximum values listed here may cause permanent damage to the device.

Exposure to absolute maximum rating conditions for extended periods may aﬀect device

reliability. Maximum ratings are absolute ratings. Exceeding only one of these values may cause

irreversible damage to the component.

Table 4

Maximum thermal resistance

Parameter

Symbol

Values

Typ.

Unit

Note or test condition

Min.

Max.

180

Thermal resistance junction R_thJA,0

to ambient

–

K/W

JEDEC 1s0p (JESD 51-3)

footprint without extra

cooling area

R_thJA,300

135

125

JEDEC 1s0p (JESD 51-3)

with 300 mm² cooling

area

R_thJA,600

JEDEC 1s0p (JESD 51-3)

with 600 mm² cooling

area

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Operating conditions

5

Operating conditions

Table 5

Operating conditions

Parameter

Symbol

Min.

Values

Typ.

Unit Note or test condition

Max.

Junction temperature

Supply voltage

T_J

–40

0

–

160

60

°C

V

–

V_S

Input voltage at pin

V_DROP

0

60

V

VDROP

Input voltage at pin OPTO V_OPTO

0

–

60

V

–

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Electrical characteristics

6

Electrical characteristics

Note:

All parameters are measured atT_A= 25 °C, VS = 45 V, unless otherwise specified.

Note:

I_LED,targetcurrent is the undimmed current at a VSENSE voltage drop of 400 mV typical.

Table 6

DC characteristics

Parameter

Symbol

Values

Typ.

Unit Note or test condition

Min.

Max.

IC system

Supply voltage

V_S

8

–

60

8

V

Operational supply

voltage range

Supply undervoltage

lock-in

V_S,uvli

V_S,uvlo

–

Supply undervoltage

lock-out

6.7

–

Supply current

I_S

-2.2

3

–

-

mA

V

I_{DRV, source}= 0 mA

Voltage at pin OPTO

V_OPTO

–

To achieve I_OPTO= 2 mA

Optocoupler sink current I_OPTO

-3.6

-2

mA

Sink current range of

pin OPTO if V_OPTO,min

with V_OVP= 0.2 V

Optocoupler leakage

current

I_OPTO,leak-80

age

–

-

µA

V_OVP= 0.8 V, V_OPTO= 3 V,

V_DROP= 0.2 V

Sense voltage

V_SENSE

388

400

412

mV

Closed loop reference

voltage of pin VSENSE,

I_LED= V_sense/ R_senseat

V_MFIO= 3.3 V

Voltage at pin VDROP

V_DROP,50.275

–

V

At I_OPTO= 100 µA (5 % of

full range), V_OVP< 1.1 V

V_DROP

0.295

–

0.31

–

0.325

0.345

At I_OPTO= 1mA (50 % of

full range), V_OVP< 1.1 V

V_DROP,95

At I_OPTO= 1.95 mA

(95 % of full range),

V_OVP< 1.1 V

Sink current at pin

VDROP

I_DROP

-6.9

–

-5.5

8

-4.1

–

µA

Constant current sink

at pin VDROP

Hot plug

Hot plug VSENSE

threshold

V_{sense, HP}

mV

VSENSE level at which

hot plug event is

detected

Driver

Driver source current

capability

I_DRV,

source

10

-

mA

Source current range of

pin DRV to drive NPN

base/NMOS gate

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Electrical characteristics

Table 6

DC characteristics (continued)

Parameter

Symbol

Min.

Values

Typ.

Unit Note or test condition

Max.

Driver sink current

capability

I_{DRV, sink}

-

-10

5.5

mA

V

Sink current range of

pin DRV to discharge

NPN base/NMOS gate

Driver source voltage

V_DRV

4.5

5

Max. output voltage of

pin DRV

Analog dimming

MFIO output source

current

I_MFIO,

setcs

18

20

22

µA

For R_SET< 10 kΩ, in

parallel internal pull-

down R_MFIOconnected,

refer to Figure 3

MFIO output voltage

V_MFIO,

setcs

–

4.2

–

V

MFIO output voltage at

MFIO open

MFIO pull-down resistor R_MFIO

228

0

285

–

342

0.1

kΩ

V

Internal pull down

resistor at pin MFIO

MFIO turn-oﬀ range

MFIO turn-on range

MFIO dimming range

MFIO full current range

DC LED dimming

V_{MFIO, oﬀ}

Threshold for analog

dimming to oﬀ

V_MFIO,on0.17

–

0.195

3.3

5

V

Threshold for analog

dimming to on

V_MFIO,

dim

0.2

3.3

–

V

Minimum to maximum

LED current

V_MFIO,

100%

–

V

MFIO range always at

100% I_LED

I_LEDmin,

3

–

%

Minimum dimming LED

current level at MFIO_dim

= 0.15 V

/

ana

I_LEDmin,

target

LED current chip to chip

variation at selected

dimming level

Δ

-20

-10

–

20

10

%

Max variation at

minimum MFIO

dimming level

I_LED,dim

/

I_LED,dim

Max variation for

dimming level higher

than minimum

LED current accuracy

I_{LED, acc}-3

3

Closed loop LED

current accuracy

without dimming

atV_MFIO= 3.3 V

Overvoltage protection OVP

Overvoltage protection

minimum voltage

V_OVP,min0.1

–

V

Minimum voltage

required at pin OVP

Overvoltage protection

threshold, OVP on

V_OVP,on,1.11

10

1.15

1.19

At 10% I_OPTO-OVPrange

~0.2 mA, V_DROP= 0.2 V

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Electrical characteristics

Table 6

DC characteristics (continued)

Parameter

Symbol

Min.

Values

Typ.

Unit Note or test condition

Max.

1.24

Overvoltage protection

threshold, OVP on

V_OVP,on1.15

1.20

V

At I_OPTO-OVP= 2 mA,

V_DROP= 0.2 V

Optocoupler sink current I_OPTO,OVP-3.2

at OVP active

–

-2.1

mA

Sink current range of

pin OPTO at V_OPTO,min

3 V with V_OVP= 1.3 V

and V_DROP= 0.2 V

=

OVP pull down resistor

R_OVP

100

120

–

140

155

kΩ

°C

Internal pull-down

resistor at pin OVP

Overtemperature protection OTP

Overtemperature

protection threshold,

turn on

T_{OTP, on}140

Junction threshold

temperature to trigger

overtemperature

protection in standby,

I_DRV= 0.1 mA and VS =

45 V

Overtemperature

protection threshold,

turn oﬀ

T_{OTP, oﬀ}120

–

135

°C

Junction threshold

temperature to exit

overtemperature

protection in standby,

I_DRV= 0.1 mA and VS =

45 V

Sense voltage in OTP

case

V_sense,

OTP

V_sense,

target

–

30

20

–

%

°C

Reduction factor at pin

VSENSE (nominal 400

mV) if OTP has been

/

triggered, I_{LED, OTP}

V_sense,OTP/ R_sense

=

Overtemperature

protection hysteresis

T_{OTP, Hys}

–

Datasheet

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BCR601 hot plug IC with voltage feedback to primary side

Package information

7

Package information

Note:

Dimension in mm

Figure 8

Package outline DSO-8

Datasheet

14

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2018-12-3

BCR601 hot plug IC with voltage feedback to primary side

References

8

References

Revision history

Document

version

Date of

release

Description of changes

1.0

1.1

2018-11-23

2018-12-3

•

Public release

Parameter update

Datasheet

15

Revision 1.1

2018-12-3

Trademarks

All referenced product or service names and trademarks are the property of their respective owners.

Edition 2018-12-3

IMPORTANT NOTICE

WARNINGS

The information given in this document shall in no

event be regarded as a guarantee of conditions or

characteristics (“Beschaﬀenheitsgarantie”) .

With respect to any examples, hints or any typical values

stated herein and/or any information regarding the

application of the product, Infineon Technologies

hereby disclaims any and all warranties and liabilities of

any kind, including without limitation warranties of

non-infringement of intellectual property rights of any

third party.

In addition, any information given in this document is

subject to customer’s compliance with its obligations

stated in this document and any applicable legal

requirements, norms and standards concerning

customer’s products and any use of the product of

Infineon Technologies in customer’s applications.

Due to technical requirements products may contain

dangerous substances. For information on the types

in question please contact your nearest Infineon

Technologies oﬀice.

Except as otherwise explicitly approved by Infineon

Technologies in a written document signed by

authorized representatives of Infineon Technologies,

Infineon Technologies’ products may not be used in

any applications where a failure of the product or

any consequences of the use thereof can reasonably

be expected to result in personal injury

Published by

Infineon Technologies AG

81726 Munich, Germany

©

2018 Infineon Technologies AG

Do you have a question about any

aspect of this document?

Email: erratum@infineon.com

Document reference

IFX-hcb1522932461817

The data contained in this document is exclusively

intended for technically trained staﬀ. It is the

responsibility of customer’s technical departments to

evaluate the suitability of the product for the intended

application and the completeness of the product

information given in this document with respect to such

application.


型号：	BCR601
厂家：	Infineon
描述：	BCR601 is a linear LED controller IC regulating the LED current with an external driver transistor. It supports either NPN bipolar transistors or N-channel MOSFETs to cover a wide LED current and power range up to several amperes. The LED current is fully scalable by dimensioning an external resistor at MFIO pin.
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BCR6AM

BCR6AM

BCR6AM-12

BCR6AM-12L

BCR6AM-12LA

BCR6AM-12LA-A8

BCR6AM-12LB

BCR6AM-12LB-A8

BCR6AM-8

BCR6AM-8L

BCR6AM12