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ATCR250 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 ATCR250
기능 Dual Input Bus Converter
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ATCR250 데이터시트, 핀배열, 회로
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Technical Reference Note
Embedded Power for
Business-Critical Continuity
ATCR250 Series
Dual Input Bus
Converter
Total Power: 250 Watts
Input Voltage: -48 VDC
Output: 12 V Intermediate Bus
3.3 V Management Bus
Special Features
• Optimized footprint for high density
ATCA applications
• Accepts inputs from -48 V and
B Feeds
• CISPR Class A EMI
• Adjustable Hold Up Voltage from 50
to 80 VDC
• I2C serial bus interface for monitoring
and reporting
• Programmable alarm
thresholds via I2C bus
• Hardware alarms via opto-
isolators for loss of A or B Feeds
• Comprehensive protection circuitry -
current, voltage and temperature
• EU directive 2002/95/EC
compliant for RoHS
Safety
UL UL60950/UL2601**
CSA CSA22.2 No. 234 Level 5
VDE EN60950/EN60601-1**
BABT Compliance to
EN60950/EN60601 BS7002
CB Certificate and report
CE Mark to LVD
Rev. 06.14.11
ATCR250 Series
1 of 16
Product Family:
Function:
Usage:
ATCR250
Dual Input Bus Converter
Definition:
The dual input ATCR250 bus converter provides AdvancedTCA (ATCA/
PICMG3.0) board designers a compact and rugged solution for generating
intermediate bus voltages in a footprint-optimized package.
The ATCR250 is more than a power converter. It also provides power
interface and power management functionality. The power interface
functions include ORing, filtering and inrush control, while power
management functionality is facilitated by both I2C serial bus and direct
high-speed interfaces.
Critical alarms, such as loss of A or B feeds, are hardware-implemented.
Other alarms are implemented over an I2C serial bus which is enhanced with
an interrupt pin.
The solution is provided in a 2.3 x 1.8 inch (59mm x 46mm) footprint and
provides an optimized solution for space-constrained systems that employ
distributed power architectures
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ATCR250 pdf, 반도체, 판매, 대치품
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Embedded Power for
Business-Critical Continuity
Signal Electrical Interface Contd.
Characteristic
Interrupt (output only) pin 18
High level output voltage
Low level output voltage
High level output current
Low level sink current
I2C Bus (input and output)
pins 20 and 22
Low level sink current
Clock frequency
Address A0, A1, A2
pins 21, 19 and 17 (input only)
Enable A & B (input only)
Symbol
Voh
Vol
Ioh
Iol
Iol
I2Cfreq
Min Typ
Max
2.90 3.10
3.30
0.1
5.0
5.0
5.0
100
Rev. 06.14.11
ATCR250 Series
4 of 16
Units
V
V
mA
mA
mA
kHz
Notes and Conditions
Output, which goes active low when any of the
measured parameters goes outside its limits. See
Application Note for further detail.
Interrupt is not active
Interrupt is active
Output source current
Output sink current
SDA and SCL referenced to secondary side 3.3V
return
Provide the communication path with the host sys-
tem. See Application Note for further details
This value is fixed
Forms part of the IC2 binary address. These are
hardwired to logic 1’ via 10 k pull-ups, but can be
configured to logic 0’ by connecting to 3.3V output
return via zero W. See Application Note for further
details
These two inputs effectively connect to their respec-
tive returns once the Zone1 connector mates with
the Zone1 socket on the backplane. Both Enables
must mate to start up the unit.
Hold up Capacitor Output (Hold Up Trim) from 50 to 80VDC Characteristics
Characteristic
Symbol
Min Typ
Max
Units
Hold up capacitance requirement
Choldup Chold_min
Chold_max
µF
Hold up Output Voltage Trim
Vcl 50
80 V
Hold Up Voltage OVP
Vhold up_ovp
92 V
Notes and Conditions
Chold_max and Chold_min depends on load and
hold up requirement on customer system. See
Application Note
Adjustable Voltage on hold up capacitors
(Hold Up Trim)
If the holdup voltage exceeds Vhold up_ovp, the
unit trips. Reset is achieved by cycling the input
power
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Embedded Power for
Business-Critical Continuity
Electrical Characteristics - O/P
Characteristic
Main Output - 12 V
Nominal set-point voltage
Total regulation band
Output current continuous
Symbol
Vo(nom)
Vo
Iout
Output current limit
Iocp
Overvoltage protection for IBC
Output voltage - noise, pk-pk
Vovp
Vpk-pk
Vrms
Output voltage during hold up event Vo (hold)
Output capacitance
Co/p
Electrical Characteristics - O/P
Characteristic
Management Power - 3.3 V
Nominal set-point voltage
Total regulation band
Output current continuous
Output current limit
Symbol
Vo(nom)
Vo
Iout
Iout_95%
Output current at short circuit
Output voltage monitor limits
Output voltage - noise, pk-pk
Is/c
Vuvp
Vovp
Vpk-pk
Vrms
Output voltage during hold up event Vo (hold)
Output capacitance
Co/p
Min Typ
12.2
11.4
0
23.6 24.5
13.4 14.6
13.4 14.6
0 20
11
1000
Min Typ
3.32
3.20
6
2.94 3.00
3.60
0 40
0 22
3.25
100
Max
12.6
20.83
25.4
15.9
15.9
50
6000
Max
3.40
4.5
4.0
3.67
75
50
1000
Units Notes and Conditions
Rev. 06.14.11
ATCR250 Series
7 of 16
Vdc
V
Adc
Adc
mVrms
Vdc
µF
Vin = Vin (nom)
For all line, static load and temperature variations
During a short-circuit or when current limit of 12 V
is exceeded,12 V lATCRhes off, 3.3 V remains on.
The 12 V can only be enabled by cycling power, or
via the I2C interface, providing the fault condition
has cleared. See Application Note.
OVP response time is 50 µs (typ)
Measurement bandwidth 20 MHz
Measurement bandwidth 20 MHz
Lowest value of Vo @ Iout max. with input
removed for hold up duration with recommended
hold up capacitance
Capacitance should be low ESR type. See
Application Note.
Units Notes and Conditions
Vdc
V
Adc
Adc
Adc
Vdc
Vdc
mV p-p
mV rms
Vdc
µF
Vin = Vin (nom)
For all line, static load and temperature variations
Current measured at approximately 95% of output
voltage
Short circuit of less than 10 mW average value.
Output self recovers upon removal of the short
circuit
If the 3.3 V goes outside these limits, the 12 V out-
put is disabled. The 12 V output is enabled again
by cycling input power, or by resetting via I2C
Measurement bandwidth 20 MHz
Measurement bandwidth 20 MHz
Lowest value of Vo @ Iout max. with input
removed for hold up duration with recommended
hold up capacitance
Capacitance should be low ESR type. See
Application Note.
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부품번호상세설명 및 기능제조사
ATCR250

Dual Input Bus Converter

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