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FAN3240 데이터시트 PDF




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부품번호 FAN3240 기능
기능 Smart Dual-Coil Relay Drivers
제조업체 Fairchild Semiconductor
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FAN3240 데이터시트, 핀배열, 회로
May 2014
FAN3240 / FAN3241
Smart Dual-Coil Relay Drivers
Features
8-V to 60-V Operation Range for use with 12-V,
24-V or 48-V Relays
Strong DC Current to Break through Welded
Contacts without using External Switches
Integrated Linear Regulator for Isolated or
Non-Isolated Meter Power Designs
Accurate Input Filter Time and XOR input protection
Accurate maximum output pulse width
Two output operating modes – follows input width
or maximum value
3.3-V or 5-V Square-Wave Logic Input Signals
Enable Pin for Operational Flexibility
Internal Thermal Shutdown Protection
Rated from –40°C to +105°C Ambient
Applications
Smart E-Meters, Energy Generation & Distribution,
Building and Home Control, Industrial dual-coil
relay Driving Applications
Description
The FAN324x family includes dual high-current relay
drivers designed to drive dual-coil polarized latching
relays that connect and disconnect power in smart
electronic meters and solar inverter applications.
The output of the FAN324x is rated for operation with
supply voltage range from 8 V to 60 V. The filter / timer
block prevents inadvertent switching from noisy input
signals by providing input-pulse qualification (tQUAL) and
maximum output pulse width limit (tMAX). The output can
operate in follow-input mode or maximum width mode.
These parameters are factory adjustable and additional
configurations are available. XOR input protection is
also provided so that both outputs are prevented from
being on at the same time. Under-Voltage Lockout
(UVLO) function disables the outputs until the supply
voltage is within the operating range.
The FAN324x has two separate driver channels with
non-inverting logic. One enable / disable pin allows
shutdown of both channels, independent of the input
signals. Internal thermal shutdown function is provided
for thermal protection. The FAN324x is available in an
Lead (Pb)-Free 8-lead SOIC package.
+SUPPLY
EN 1
Ref
UVLO
VS 10 V ~ 60.0 V
8
5VB
2
Internal
Bias
Regulator
TSD
OUT1
EN 7
Relay Open
3
IN1
Processor
100 k
IN2
4
Relay Close
100 k
GND
Osc 6
Timer /
Filter /
OUT2
Protection EN 5
Product
FAN3240
FAN3241
© 2012 Fairchild Semiconductor Corporation
FAN3240 / FAN3241 • Rev. 1.0.2
Figure 1. Typical Application Diagram
A
B
C
tQUAL
15 ms
1 ms
tMAX
150 ms
30 ms
OUT Mode
tOUT = tIN
tOUT = tMAX
www.fairchildsemi.com




FAN3240 pdf, 반도체, 판매, 대치품
Configurations
The FAN324x products are set at the factory with the following configurations.
tQUAL
tMAX
OUT Mode
FAN3240
FAN3241
15 ms
1 ms
150 ms
30 ms
tOUT = tIN
tOUT = tMAX
Contact your Fairchild sales representatives for additional configurations. The parameter tQUAL can be configured between 128 µs
and 20 ms and tMAX can be programmed between 1 ms and 350 ms.
where:
tQUAL:
tMAX:
Qualification Time. The minimum input pulse width duration recognized as a valid input command.
Maximum Output Pulse Width. Output pulses are terminated after this time interval even if the input
pulse is longer or held in a HIGH state continuously.
OUT Mode: Output Mode. TheFAN324x offers two fundamentally different output pulse generation methods:
tOUT = tIN < tMAX. In this mode, the output pulse duration (tOUT) replicates the length of the input pulse
(tIN) up to tMAX.
tOUT = tMAX. The output is on for a fixed time interval of tMAX, regardless of the input pulse width.
The mode of operation has no impact on the qualification requirements or on the maximum output pulse
width limiting. In both output operating modes, the qualification requirement must be met (tIN > tQUAL) to
produce an output pulse.
Output Logic(7)
EN
IN1
IN2
OUT1
OUT2
0 0 0HH
0 0 1HH
0 1 0HH
0 1 1HH
1 0 0HH
1 0 1HL
1 1 0 LH
1 1 1HH
Note:
7. Inputs and EN are defined as logic signals (positive logic; 1 is active), outputs are defined as HIGH or LOW
impedance due to the open-drain output structures. Low output impedance is needed to energize the relay coil.
© 2011 Fairchild Semiconductor Corporation
FAN3240 • Rev. 1.0.2
4
www.fairchildsemi.com

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FAN3240 전자부품, 판매, 대치품
Electrical Characteristics (Continued)
Unless otherwise noted, VS = 40 V, C5VB = 0.22 µF, and TJ = -40°C to +105°C. Currents are defined as positive into
the device and negative out of the device.
Symbol
Parameter
Conditions
Outputs (OUT1, OUT2)
RDS(ON) On Resistance (OUT1, OUT2)
tRISE
Output Rise Time(10,11)
ISINK = 500 mA, –40°C(10)
ISINK = 500 mA, 25°C(10)
ISINK = 500 mA, 105°C(10)
RPULL-UP = 36
IMAX
tFALL
Maximum Current Driving Capability
Output Fall Time(10,11)
tMAX = 30 ms, 25°C
RPULL-UP = 36
tMAX Maximum Pulse Width
FAN3240
FAN3241
IRVS Output Reverse Current Withstand(10)
Notes:
8. Lower supply current due to inactive TTL circuitry.
9. EN inputs have TTL thresholds; refer to the ENABLE section.
10. Not tested in production.
11. See Timing Diagram of Figure 4.
Min. Typ. Max. Unit
0.4 0.7 1.0
0.7 1.0 1.3 Ω
1.2 1.6 2.0
7 µs
1.5 A
7 20 ns
135 150 165
ms
27 30 33
500 mA
Timing Diagrams
VINH
Input
VINL
90%
Output
10%
tQUAL
tMAX
tFALL
t RISE
Figure 4. Timing (with EN HIGH)
© 2011 Fairchild Semiconductor Corporation
FAN3240 • Rev. 1.0.2
7
www.fairchildsemi.com

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