SEN012-013
SENZero
Family
®
Zero
1
Loss High Voltage Sense Signal Disconnect IC
Product Highlights
Features and Performance
•
Eliminates significant standby losses
•
Disconnects unnecessary circuit blocks during standby,
remote-off, or light-load conditions
•
Ultra low leakage (maximum 1
mA)
650 V MOSFETs
•
<0.5 mW per channel during standby
•
Single component provides remote disconnect functionality
•
No external components or additional bias supply needed for
remote-off
•
Integrates multiple disconnect MOSFETs, gate drive, and
protection
•
Minimal component count provides higher reliability
•
Protection features to help production/manufacturing yields
•
Pin-to-pin fault and ESD protection
•
Triggerable via remote-off signal or load conditions
•
Integrated gate pull down circuit protects against loss of
trigger signal fault
•
Green package technology
•
RoHS compliant and halogen free
•
Withstands high differential surge conditions
•
S1, S2 and S3 interface with controller pins up to 6.5 V
above system ground
EcoSmart
®
– Energy Efficient
•
<3 mW loss at 230 VAC in Off/standby mode
Applications
•
ACDC converters with high-voltage resistive signal paths
•
Ideal for all very low standby systems such as those meeting
EuP Lot 6 and similar energy efficiency standards
High-Voltage
DC Rail
System
V
CC
System
Standby
Signal
VCC
D1
D2
SENZero
System
Ground
Figure 1.
G
S1
S2
To Controller(s)
Sense Pins
PI-5813-032510
Typical Application SEN012.
High-Voltage
DC Rail
System
V
CC
System
Standby
Signal
VCC
D1
D2
D3
Description
SENZero
System
Ground
Figure 2.
G
S1
S2
S3
SENZero is a compact low cost solution to eliminate losses in
resistive signal paths connected between high-voltage rails and
switching power supply controller(s). Examples include feed-
forward or feedback signal paths connected to boost controllers
in power factor corrected systems and feedforward signal paths
in two switch forward / LLC / half and full bridge converters.
The device is available in 2 (SEN012) and 3 (SEN013) channel
versions according to the application’s requirements. The
internal gate drive and protection circuitry provides gate drive
signals to the internal 650 V MOSFETs in response to the voltage
applied to the VCC pin. This simple configuration provides easy
integration into existing systems by using the system V
CC
rail as
an input to the SENZero.
The SENZero family uses a low cost compact SO-8 package to
reduce PCB area while the pin configuration is designed to meet
pin-pin fault conditions.
To Controller(s)
Sense Pins
PI-5812-032510
Typical Application SEN013.
Component Selection Table
Product
2
SEN012DG
SEN013DG
Integrated Disconnect
MOSFETs
2
3
230 VAC
Power Consumption
in Standby
<1 mW
<1.5 mW
Table 1. Component Selection Table.
Notes:
1. IEC
62301
clause 4.5 rounds standby power use below 5 mW to zero.
2. Package: D: SO-8.
www.powerint.com
November 2010
POWERINT [ POWER INTEGRATIONS, INC. ]
