EBD5100 Product Specification
Rev: 1.0

DRIVER BOARD EBD5100
Product Specification Document

Revision:

1.0

Date:

13-December-2010

Confidentiality:

None

Prepared by:Philipp Vorreau(Project Manager)

Checked by:

Esteban Gonzalez(Lab Manager)

Approved by:Philippe Crépellière(Quality Manager)

Authorized by:

Marcus Duelk(CTO)

13-December-2010
Page 1 of 16

EBD5100 Product Specification
Rev: 1.0

13-December-2010
Page 2 of 16

CONTENTS
12

3SCOPE .................................................................................................................3
1.1

Purpose ................................................................................................................................... 3

1.2

Board Revision ........................................................................................................................ 3

1.3

Responsibility .......................................................................................................................... 3

PRODUCT DESCRIPTION ..................................................................................4
2.1

Architecture ............................................................................................................................. 4

2.2

Features .................................................................................................................................. 4

2.3

Operating Range ..................................................................................................................... 4

2.4

RoHS Compliance ................................................................................................................... 4

EBD5100 DRIVER BOARD .................................................................................5
3.1

Printed Circuit Board (PCB) .................................................................................................... 5

3.2

Electrical User Interfaces ........................................................................................................ 6

3.3

Operating Conditions .............................................................................................................. 9

3.4

Performance Characteristics ................................................................................................... 9

4

PACKAGED SLED DRIVER MODULE.............................................................. 115

OPERATING INSTRUCTIONS .......................................................................... 13

6

5.1

Ambient Temperature ...........................................................................................................13

5.2

Supply Voltage ......................................................................................................................13

5.3

Temperature Controller (TEC) ..............................................................................................13

5.4

Enabling the SLED ................................................................................................................13

5.5

Adjusting the Drive Current ...................................................................................................13

5.6

On-Off Modulation .................................................................................................................14

5.7

Analog Current Modulation ...................................................................................................14

5.8

Open-Collector Outputs ........................................................................................................14

5.9

Disabling the SLED ...............................................................................................................15

5.10

Hot-Plugging the Supply Voltage ..........................................................................................15

5.11

Warm-up Time.......................................................................................................................15

REVISION HISTORY.......................................................................................... 16

EBD5100 Product Specification
Rev: 1.01
1.1

13-December-2010
Page 3 of 16

SCOPE
PURPOSEThe purpose of this document is to describe the set of functional features, the performance and theuser interfaces of EXALOS’ analog driver board EBD5100 for SLEDs (Super-Luminescent Emitting
Diodes) and pin-compatible laser diodes.

1.2

BOARD REVISION
This product specification is based on the EBD5100 production series, revision V2.

1.3

RESPONSIBILITYEXALOS is responsible for establishing, implementing and maintaining this specification. The quality
representative shall ensure that a timely Engineering Change Notice (ECN) is issued in accordance with
EXALOS’ procedure for any changes.

EBD5100 Product Specification

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Rev: 1.0

2
2.1

Page 4 of 16

PRODUCT DESCRIPTIONARCHITECTURE
The EBD5100 is a high-performance analog driver board that consists of a multi-layer PCB board on
which the 14-pin dual-in-line (DIL) module is soldered. The multi-layer PCB design with shielding
ground layers allows for the co-existence of a highly efficient switched-mode temperature controller(TEC) with a low-noise linear SLED drive current controller in a compact form factor with the size of acredit card. Furthermore, the multi-layer PCB design features a sophisticated heat-spreading thermal
design that reduces hot spots, which is the basis for stable operation at high ambient temperatures.

2.2

FEATURES
The main characteristics of the EBD5100 are:•High-efficiency switched-mode TEC supporting high-power SLEDs at high ambient temperatures•

Generation of an ultra-stable, ultra-low noise SLED drive current•

Adjustment of the SLED drive current either through an external analog control voltage(0-2.5V) or through the on-board potentiometer•

SLED enable either through a mechanical code switch or through an electrical TTL signal•

Digital on-off modulation with TTL signals•

Noise and spike filter network and brown-out detector for input supply voltage

The EBD5100 features a stabilization feedback loop for the SLED drive current (automatic current
control, ACC) but not for the SLED output power (automatic power control, APC). If required, APC
would have to be realized through external control loops, for example using either the monitor
photodiode (MPD) signal of the JP2 connector or using any external MPD in conjunction with control of
the SLED drive current through an analog control signal at JP5.
2.3

OPERATING RANGEThe EBD5100 has been designed for operation over a wide temperature range. Only industrial-grade
components have been selected that are qualified for operating temperatures from -40 °C to +85 °C.
The standard temperature operating range of the EBD5100 is -20 °C to +65 °C.
The EBD5100 is designed to ensure proper operation in environments with electro-magnetic
interference (EMI) by using a star-like ground concept and various levels of analog grounds throughout
the design.
The EBD5100 requires a stable +5V power supply in the range of 4.90 V to 5.20 V. Supply voltages
outside this range may result in improper operation or elevated power dissipation of the electronics.
Spiky and unstable supply voltages may activate the on-board spike and brown-out detector, resulting
in a controlled shut-off followed by a ramp-up of the SLED current. The required supply current iscomposed of the SLED drive current and the Peltier current. The maximum supply current is 3 A for a
maximum SLED drive current of 1000 mA and a maximum Peltier current of 1800 mA. Typical supply
current under operation might be significantly lower, depending on the SLED and ambient temperature.

2.4

ROHS COMPLIANCE
All components and fabrication or assembly processes used for the EBD5100 are compliant to the
Restriction of Hazardous Substances (RoHS) directive 2002/95/EC.

EBD5100 Product Specification
Rev: 1.0

3
3.1

13-December-2010
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EBD5100 DRIVER BOARD
PRINTED CIRCUIT BOARD (PCB)The EBD5100 board has a size of 70 mm (L) x 55 mm (W). Fig. 1 shows pictures of the front side of theEBD5100 board. Fig. 2 shows a schematic top view of the board and the names of connectors,
switches, potentiometers and LED indicators.

Fig. 1

Fig. 2Top view of the EBD5100 board

Schematic top view of the EBD5100 indicating the user interfaces

EBD5100 Product Specification

13-December-2010

Rev: 1.0

3.2

Page 6 of 16

ELECTRICAL USER INTERFACES
When the EBD5100 is, together with an SLED module, assembled into a metal case only connector JP1,
JP4 and JP5 as well as potentiometer P1 are accessible from the outside. Hidden inside the metal caseand hence not accessible from the outside are connector JP2, which features diagnostic signals to be
used by EXALOS only, code switch S1, which allows for the selection of various operating modes, andfive LED indicators. Table 1 provides a list of all electrical connectors that belong to the user interface.

Name

Connector on
EBD5100 board

Function

Mating connector forcable assembly

JP1

MOLEX “Micro-Fit 3.0”;43650-0300
Header (male)+5V power supply, GND, PE

MOLEX “Micro-Fit 3.0”;43645-0300
Receptacle (female)

JP2

Tyco “Micro-MaTch”;
1-215079-0
female-on-board

On-board diagnostics(for EXALOS use only)

Tyco “Micro-MaTch”;
8-215083-0
male-on-wire

JP4

MOLEX “Milli-Grid”;
87833-0420
Header (male)

SLED enable & on-off modulation

MOLEX “Milli-Grid”;
51110-0460
Crimp Housing

JP5

MOLEX “Milli-Grid”;
87833-1020
Header (male)

Analog and digital input & output
signals

MOLEX “Milli-Grid”;
51110-1060
Crimp Housing

Table 1

List of electrical connectors (user interface)Fig. 3 shows the front view of the connector JP1, JP4 and JP5. The corresponding pinout information islisted in Table 2, Table 3 and Table 4, respectively.

Fig. 3

Front view of header JP5, JP4 and JP1 with pin indication.
The green bar indicates the PCB of the EBD5100.

EBD5100 Product Specification

13-December-2010

Rev: 1.0

Pin

Name

Description /Comment

1

PE

Protective Earth, to ground the metal case2

GND

External electrical Ground3+5VextExternal 5V power supply (4.90-5.20 V)
Table 2

Page 7 of 16

Pinout of header JP1

Pin

Name

Description / Comment

1

Modulation

5V TTL digital modulation signal

2

+5Vin

5V supply voltage from JP1, for configuration purposes only,
e.g., enable the SLED through short to pin3

3

SLEDenable

5V TTL digital signal to enable/disable the SLED

4

GNDext

GND reference for Modulation or SLEDenable when realizedwith open-collector outputs, preferably not be usedotherwise to avoid GND loops (use instead pin2 of JP1 as
GND reference for Modulation and SLEDenable if possible)
Table 3

Pinout of header JP4

Pin

Name

Description / Comment1

SLED_enabled

Open-collector output indicating SLED is on2

AIN_enabled

Open-collector output indicating that SLED current is
controlled through pin9/pin103

AIN_alarm

Open-collector output indicating excessive analog input
voltage at pin9/pin10 is applied and limited to +2.5V

4

Temperature_alarm

Open-collector output indicating the read temperature of the
SLED being either 1.5°C above or below the set temperature

5

GNDext

GND reference for pin1 to pin4

6

GNDext

GND reference for pin1 to pin4

7

AINenable

Enable SLED current control through pin9/pin10

8

+5Vin

5V supply voltage from JP1, for configuration purposes only,
e.g., enable analog control through short to pin7

9

+AINextern

Analog input voltage (0-2.5V) to control SLED current

10-AINextern

GND reference of analog input signal (pin 9)
Table 4

Pinout of header JP5

EBD5100 Product Specification

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Rev: 1.0

Page 8 of 16

The right half of connector JP5 contains digital alarm or status signals that are decoupled from the restof the electronics through opto-couplers. They are open-collector outputs with a common ground“GNDext” that is on pin5 and pin6 of JP5. These alarm signals are also logically connected to the four
LEDs that are found on the board. As shown in Table 5, the pinout sequence of JP5 matches theconfiguration sequence of the LED indicators (except for power indicator LED0).

LED

Name

Description / Comment

LED0(green)Power

Indicating supply voltage with correct polarity after the fuseand brown-out and spike detector

LED1(green)

SLED_enabled

Open-collector output indicating SLED is on

LED2(orange)

AIN_enabled

Open-collector output indicating that SLED current is
controlled through pin9/pin10

LED3(orange)

AIN_alarm

Open-collector output indicating excessive analog input
voltage at pin9/pin10 is applied and limited to +2.5V

LED4
(red)

Temperature_alarm

Open-collector output indicating the read temperature of the
SLED being either 1.5°C above or below the set temperature

Table 5

Configuration of LED indicators

The left half of connector JP5 contains pins for analog control of the SLED drive current and hence ofthe optical output power. The analog input pins shall be handled with care as they are not decoupledthrough opto-couplers, which may, in cases of false connectivity, result in unwanted GND loops. Pin9and pin10 allow for applying an analog control voltage (0 to +2.5V) in order to control the SLED current
and to use the EBD5100 as part of an analog control loop. The analog control input voltage at +AINext
and –AINext are fed into an instrumentation amplifier of high accuracy, low offset voltage and low drift.

Position

AINenable

SLEDenable

TECenable

0

Off

Off

On

1

Off

On

On

2

On

Off

On

3

On

On

On

4

Off

Off

Off

5

Off

On

Off

6

On

Off

Off

7

On

On

Off

Table 6

Configuration table for code switch S1

EBD5100 Product Specification
Rev: 1.0

13-December-2010
Page 9 of 16

Table 6 shows possible configurations of the EBD5100 that can be selected through the code switch S1.
The default configuration of S1 is ‘0’, i.e. the temperature controller (TEC) is enabled but the SLED andthe current control through an analog input signal is disabled. This means that the TEC is working assoon as a supply voltage is applied. The SLED is turned off and can be turned on through an activeHIGH (5V) signal on pin3 of JP4 or by switching the code switch S1 to ‘1’. The SLED current can be
adjusted through the potentiometer P1.
Still, even in configuration ‘1’ the SLED current can be adjusted electronically through pin9 and pin10 ofJP5. In order to enable the control through an external analog signal an active-HIGH (5V) signal needs
to be applied to pin7 of JP5, for example by shortening pin7 and pin8. In this case the setting ofpotentiometer P1 is ignored.
The TEC shall only be disabled for SLED modules not featuring a Peltier element. For standard DIL
modules with an internal Peltier element the default configuration of S1 has the TEC enabled as it
cannot be enabled electronically.

3.3

OPERATING CONDITIONS
Table 7 shows the typical, minimum and maximum operating conditions of the EBD5100 driver board.
Parameter

Min.

Typ.

Max.

Supply Voltage

4.9 V

5.0 V

5.2 V

Supply current, SLED disabled, TEC enabled (1)

0.3 A

2.0 A

Supple current, SLED enabled, TEC enabled (2)

0.8 A

3.0 A

Ambient operating temperature (3)-20 °C

65 °C

Ambient storage temperature-40 °C

85 °C(1): Typical value at room temperature. Larger than typical supply currents can occur during power-up of the board or at extreme
ambient temperatures.
(2): Typical value at room temperature and SLEDs up to 500 mA. Larger than typical supply currents can occur during power-upof the board or at extreme ambient temperatures.
(3): Extended temperature range from -40°C to +85°C available upon request.

Table 7

3.4

Operating conditions of the EBD5100

PERFORMANCE CHARACTERISTICS
Table 8 shows the typical performance of an EBD5100 driver board that was assessed with various
short-wavelength and long-wavelength SLED modules from EXALOS. Furthermore, spectral noise
measurements were performed with a high-precision electrical resistor and compared to optical relative
intensity noise (RIN) measurements carried out with SLED modules.
During mid-term (up to 24 hours) experiments in an environmental chamber, measurements of the
SLED current were performed every 6 seconds. The time-related drift was extracted through adjacentaveraging smoothing with a 1-hour window size (sliding-window averaging); the drift is not cumulative,
i.e. drift over 24 hours can be zero. During mid-term and long-term (up to 1000 hours) experiments ina module test system, measurements of the SLED current and temperature were performed every 1
second and averaged over five minutes (300 samples) in order to record long-term trends.

EBD5100 Product Specification

13-December-2010

Rev: 1.0

Parameter(ptp=peak-to-peak, rms=root mean square)

TypicalPage 10 of 16

Maximum
RatingDrive current

600 mA

Compliance voltage

3.0 V

TEC current

1.8 A

Conditions/Comments
Extended current range up to
1000 mA upon request

Extended TEC currents up to
3.0 A upon request

TEC temperature stability ptp 24h±0.002 °C±0.01 °C

Equivalent to ±100 ppm @ 20 °C

TEC temperature drift 1000h±0.07 ppm/h±0.1 ppm/h

Linear interpolation over 1000 h

Current stability ptp 24h±75 ppm±100 ppm

Current stability rms 24h±20 ppm±30 ppm

Current stability ptp 1h±75 ppm±100 ppm

Current stability rms 1h±20 ppm±30 ppm

Mid-term current drift 24h±9 ppm/h±12 ppm/h

1h sliding window

Long-term current drift 1000h±0.5 ppm/h±0.8 ppm/h

Linear interpolation over 1000 h

Temperature-related current change (1)±10 µA/°C±15 µA/°C

Current noise

1.3 µArms

1.5 µArms

Average value, not including
warm-up
Extracted from spectral noise
measurements (1 kHz – 10 MHz)

Turn-on delay for SLED enable (2)100 msTurn-on delay on-off modulation (2)10 ms

10:90 rise time on-off modulation (2)1 ms

Max. on-off modulation frequency (3)50 Hz

Max. analog modulation frequency (3)3 Hz

Ambient temperature constantwithin ±0.5 °C
Ambient temperature constantwithin ±0.5 °C
Ambient temperature constantwithin ±0.5 °C
Ambient temperature constantwithin ±0.5 °C(1): Typically a change of 1.0 mA or less in drive current is measured over temperature range from -40°C to +85°C.
(2): The EBD5100 features a built-in safety circuitry that powers down the electronic driver stage of the SLED whenever the SLEDis disabled. This guarantees that under no circumstances the driver board can generate any light output from the SLED as long as
the SLED is disabled. Furthermore, this turn-on delay also guarantees a controlled power-up behavior of the board in case thesupply voltage is cycled while the SLED is enabled.
(3): The default configuration of the EBD5100 board is optimized for lowest possible noise performance with modulation rates ofa few Hertz. The modulation switch on the board supports modulation rates up to 10 MHz and the default OpAmps support
modulation rates up to 30 kHz. Upon request customized versions of the EBD5100 can be realized that support faster modulation
rates, for example up to 10 kHz, at the expense of higher current noise.

Table 8

Typical performance characteristics of the EBD5100

EBD5100 Product Specification
Rev: 1.0

413-December-2010
Page 11 of 16

PACKAGED SLED DRIVER MODULE
The EBD5100 was designed as an OEM board to be used in various system environments. The EBD5100
is only available as a packaged module with an aluminum metal case, in which the driver board and the
SLED module are assembled. The bottom part of the aluminum case will act as a heat sink for the
optical SLED module. The bottom part also features fins for improved heat dissipation. Furthermore, themetal case was designed to be mounted vertically on a base plate of the corresponding system. This
serves two purposes:
1. Improved thermal dissipation through air convection flowing vertically through the fins
2. Reduced consumption of floor space inside the system
Fig. 4, Fig. 5 and Fig. 6 show the metal case for the EBD5100 driver board assembly. The outerdimensions of this packaged module without the metal stands are 76 mm (L) x 61 mm (H) x 32 mm(W). The metal stands overhang the module by 11 mm on each side. As shown on Fig. 6, the metalcase features a hole at the bottom side through which a screw driver can be inserted to change thepotentiometer P1 for adjusting the SLED drive current. The top side of the metal case provides accessto the connectors JP1, JP4 and JP5.

Fig. 4

Side view of the EBD5100 metal case: Mechanical drawing onleft and photograph on right (fiber output is on right side).

Fig. 5Top view of the EBD5100 metal case: Mechanical drawing onleft and photograph on right (fiber output is on right side).

Fig. 6

Bottom view of the EBD5100 metal case: Mechanical drawing onleft and photograph on right (fiber output is on left side).

EBD5100 Product Specification
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13-December-2010
Page 12 of 16

In order to provide a shield against electro-magnetic interference (EMI), pin1 of JP1 shall be connected
to PE through a short cable. Having a short contact to PE is essential to provide high-frequency
shielding of the driver board and the mounted SLED. Internally, pin2 (GND of the supply voltage) andpin1 (PE contact) are shorted. Alternatively to a PE cable on pin1, the metal case can be mounted on abase plate that is on PE. It needs to be ensured that during the assembly of the case onto the baseplate the non-conductive electroplated surface finish is scratched by the mounting screw, for example
by using a jawed washer in between the screw and the metal case.

EBD5100 Product Specification
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5.1

13-December-2010
Page 13 of 16

OPERATING INSTRUCTIONSAMBIENT TEMPERATURE
Make sure the ambient operating temperature is within -20 °C to +65 °C, unless specified differently by
EXALOS.

5.2

SUPPLY VOLTAGE
Make sure a stable supply voltage within 4.90 V to 5.20 V is applied with the correct polarity. Polarity
inversion will not harm the SLED but might eventually result in damage of the on-board supply voltage
filter network. For first testing it might be therefore useful to set the current limit to 1.5-2.0 A andmonitor the LED0 indicator. The on-board 3A fuse has a current- and temperature-dependent prearcing time, i.e. lower current limits will result in longer pre-arcing times and hence more time for theuser to react to accidental polarity inversion. The EBD5100 is not sensitive to noise of the supply
voltage as it features various filter networks and ground decoupling stages as well as a spike andbrown-out detector.

5.3

TEMPERATURE CONTROLLER (TEC)
For the default configuration of code switch S1 and for SLED modules featuring a Peltier element, the
TEC is working as soon as a supply voltage is applied to the board. The TEC is a high-performanceswitched-mode controller that is working at an internal frequency of 1 MHz. Depending on the ambient
temperature it may take a few seconds after turn-on of the board for the TEC to stabilize the SLED
temperature. During this stabilization period the TEC may operate the Peltier element at a maximum
current of 1.8 A, resulting in a high supply current. It is recommended to enable the SLED only when
the TEC is in a stable condition, indicated through the temperature alarm (LED4 and pin4 of JP5) being
off.

5.4

ENABLING THE SLEDThe SLED is enabled and the optical power is turned on either by applying a 5V signal to pin3 of JP4(active-HIGH) or by turning the code switch S1, for example to ‘1’. When using an electronic enable
signal, e.g., 5V TTL, make sure that the voltage is relative to the GNDext on pin4 of JP4. Enabling the
SLED will first power up all OpAmps of the driver stage before the optical power is turned on after abuilt-in time delay. The turn-on sequence guarantees proper operation of the driver board even when
the power supply is hot-plugged though the SLED was enabled. This means that the SLED can be
enabled with the drive current being set to the maximum level, i.e. it is not necessary to ramp up thedrive current manually. Furthermore, the driver board generates a current ramp of several milliseconds
at turn-on to avoid optical power overshoots. The time delay for the turn-on depends on the SLED drive
current. For zero drive current the SLED will not be enabled (infinite time delay) while for maximum
drive current the SLED will be enabled fastest.

5.5

ADJUSTING THE DRIVE CURRENTThe SLED current level can be either manually adjusted through the potentiometer P1 using ascrewdriver (turning the screw counterclockwise increases the drive current) or through an analog
control signal (AIN, 0 to +2.5V) applied to pin9 and pin10 of JP5. When adjusting the current level
electronically, make sure that the analog control is enabled (AINenable, pin7 of JP5) or that the code
switch S1 is in a position that enables the analog control, for example position ‘2’. When using an signal
for AINenable, e.g., 5V TTL, make sure that the voltage is relative to the GNDext on pin6 of JP5.
The analog input voltage is limited to 2.5V on the board to ensure safe operation. AIN voltages larger
than 2.5V are clipped and an alarm signal is enabled (LED3 and pin3 of JP5).

EBD5100 Product Specification
Rev: 1.0

5.6

13-December-2010
Page 14 of 16

ON-OFF MODULATIONThe SLED current can be turned on and off with a TTL modulation signal through pin1 of JP4. The logic
is inverted, i.e. an open connection at pin1 or 0V (LOW) leaves the SLED on (optical power is HIGH)
while 5V at pin1 (HIGH) turns the SLED off (optical power is LOW). When using an active modulation
signal, e.g., 5V TTL, make sure that the voltage is relative to the GNDext on pin4 of JP4. Fig. 7 shows
the modulation behavior and modulation bandwidth of the EBD5100 driver board in its standard
configuration. The maximum modulation frequency is specified in Table 8.

Fig. 7

Duty cycle of SLED current or optical output power for a TTL modulation input
signal with 50% duty cycle as a function of modulation frequency for the standard
configuration of the EBD5100. Because of the inverted logic of the modulation
input this graphs also shows the required duty cycle of the electrical modulation
input signal in order to achieve a 50% duty cycle for the optical output or SLED
current.

Faster modulation frequencies may be realized upon request. However, faster current rise times can, in
principle, lead to unwanted optical power transients if the rise time of the drive current is below ten
microseconds. Therefore, EXALOS offers faster modulation rates only based on customer requests.
There is no intentional time delay or current ramp for the turn-on of the SLED under on-off modulation,different to the procedure of enabling the SLED. Turning off the SLED through pin1 of JP4 will also not
power down the OpAmps of the driver stage.
5.7

ANALOG CURRENT MODULATIONThe SLED current level and hence the optical power can be varied or modulated through pin9 and pin10
of JP5. The maximum modulation frequency is specified in Table 8. Faster modulation frequencies may
be realized upon request.

5.8

OPEN-COLLECTOR OUTPUTS
Status and alarm indicators at JP5 are realized as open-collector outputs that are decoupled from the
GND potentials of the EBD5100 driver board. According to Table 4, these digital outputs are“SLED_enabled” (pin1), “AIN_enabled” (pin2), “AIN_alarm” (pin3) and “Temperature_alarm” (pin4). In

EBD5100 Product Specification
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13-December-2010
Page 15 of 16

order, for example, to illuminate an external LED in the presence of an alarm, a minimum load has tobe considered to limit the current through the open-collector opto-couplers on the EBD5100 board, as
shown in Fig. 8. Positive external voltages (+U) in the range of 3V to 28V are acceptable as long as thecurrent does not exceed 20 mA. For example, for a voltage +U=5V a minimum load R of 250 Ohms
would be required. The external voltage +U shall be relative to GNDext at pin5 or pin6 of JP5.

Fig. 8

5.9

Example of using an open-collector alarm output of JP5 to illuminate an
external LED. The load R limits the current to max. 20 mA.

DISABLING THE SLEDIn order to disable the SLED and hence the optical output apply 0V to pin3 of JP4 (active-HIGH). If thecode switch S1 was previously used to enable the SLED then S1 may be switched back to the original
position to disable the SLED while it is running, i.e. it is not required to turn down the drive current of
the SLED before disabling it. When the SLED is disabled all OpAmps of the SLED driver stage are
powered down as an additional safety feature. In case of loss of supply voltage before disabling it, theSLED is automatically and safely powered down.

5.10 HOT-PLUGGING THE SUPPLY VOLTAGE
As mentioned earlier the supply voltage of the EBD5100 can be hot-plugged while the SLED is enabled
without harming the SLED. The SLED is safely powered up or powered down when the supply voltage ishot-plugged.
5.11 WARM-UP TIME
As any other electronics the EBD5100 has a warm-up time until, for example, the current drift during
the turn-on phase is minimized. Typical warm-up time at 20 °C ambient temperature is 20 minutes.

EBD5100 Product Specification

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Page 16 of 16

REVISION HISTORY
Revision History

Rev.

Description

1.0First full specification release

ECN Number

Date (ECN)

Released--

13.12.2010