NCS37010 Datasheet, PDF (1/12 Pages) ON Semiconductor – Self Test With Lockout Ground Fault Circuit Interrupter (GFCI)

NCS37010
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Self Test With Lockout
Ground Fault Circuit
Interrupter (GFCI)
The NCS37010 is a fully UL943 compliant signal processor for
GFCI applications with self test and lockout. The device integrates a
flexible power supply (including both shunt and LDO regulators),
differential fault, and grounded−neutral detection circuits. Proprietary
impedance measurement and signal processing techniques are used to
minimize the number of external components and improve
performance. The device also includes a specialized DSP controller
that offers best in class immunity to nuisance loads without the need
for external analog filters. At power up the NCS37010 performs a self
test at 60ms and removes the lockout if the test passes. This self test
consists of a differential, ground−neutral and solenoid test.
Features
• 6.0 − 12 V Operation (120 − 480 V AC Mains with the Appropriate
Series Impedance)
• −40 to 85°C
• Very low power consumption: < 15 mW @ 6 V
• 16 Pin QFN or 20 Pin TSSOP Package
• Single Current Transformer (CT) Detection of Both Differential and
Grounded−Neutral Faults
• Full Self Test and Trip Indicator Monitoring.
• Self Test on Power Up Enables Lockout Functionality
• Self Syncing Internal Oscillator Adjusts to AC Mains Frequency to
Guarantee Full Resolution on 50 and 60 Hz Distribution Systems
• Optimized Solenoid Deployment (Coil is Not Energized Near the AC
Mains Zero Crossings)
• Randomized Testing Sequence to Minimize Noise and Potential
Interactions on the AC Mains
• >5 mA SCR Driver for Use with High Igt SCR’s for Improved Noise
Immunity
• Superior Immunity to Nuisance Loads/Noise (up to 10 A) Without
Loss of Detection Capability or CT Saturation
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Load Panel GFCI Breakers
• GFCI Receptacles
• In−line GFCI Circuits (Power Cords)
http://onsemi.com
1
QFN16
CASE 485G
MARKING
DIAGRAMS
XXXXX
XXXXX
ALYWG
G
20
1
TSSOP−20
DB SUFFIX
CASE 948E
3701
0DBG
ALYWG
G
XXXXX = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
1
MLD
CTresGN
CTbias
CTstim
GND
LObar
PTT
TE
SCRtstEN
(Top View)
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
June, 2013 − Rev. P2
Publication Order Number:
NCP37010/D