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PI2061 fiches techniques PDF

Picor - High Side High Voltage Load Disconnect Switch Controller IC

Numéro de référence PI2061
Description High Side High Voltage Load Disconnect Switch Controller IC
Fabricant Picor 
Logo Picor 





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PI2061 fiche technique
Not Recommended for New Designs
PI2061
Cool-Switch® Series
High Side High Voltage Load Disconnect Switch Controller IC
Description
The PI2061 is a high-speed electronic circuit breaker
controller IC designed for use with N-channel MOSFETs in
high side load disconnect switch solutions for medium
voltage applications. The PI2061 Cool-Switch® controller
enables an extremely low power loss solution with fast
dynamic response to an over current fault or EN Low
conditions.
Once enabled, the PI2061 monitors the MOSFET current
through a sense resistor. If an over current level is
sensed, the switch is quickly latched off to prevent the
power source from being overloaded. Bringing the EN
pin low will reset the over current latch allowing retry. To
avoid false tripping by the in-rush current, the over
current level is approximately doubled during start up,
until SN approaches about 0.8V below VC. The PI2061
has an internal charge pump to drive the gate of a high
side N-Channel MOSFET above the VC input. There is an
internal shunt regulator that regulates the VC input with
respect to the SGND pin for applications higher than 11
volts.
Table of Contents:
Pin Description
Electrical Specifications
Functional Description
Block Diagram
State Diagram
Typical Characteristics Plots
2
3
5
6
7
8
Features
Programmable latching over-current detection
Fast 120ns disconnect response to a load short
Fast disable via EN pin, typically 200ns.
4A gate discharge current
Internal charge pump
Fault status indication
Applications
Telecom System, ≤80V operation & 100V/100ms
Transient
N+1 Redundant Power Systems
Servers & High End Computing
High Side Circuit Breaker and Load Disconnect
Package Information
The PI2061 is offered in the following package:
10 Lead 3mm x 3mm DFN package
Application Information
12V Typical Application Example
48V Typical application Example
Layout Recommendation
Package Drawings
Ordering Information
9
12
13
14
15
15
Typical Application:
Event: Output Short
Vin
RS Iout
Vout
RVC
VC
0.1µF
26
GATE SP
3 VC
7
SN
D2
5 EN PI2061
4 SGND
PGND
1
FT 9 FT
D1
RTN
RPG
Figure 1: PI2061 in High Side Disconnect switch application
Current Trip Level
0A
Output Current
Over Current detection
Vout
Vin
MOSFET Turn Off Time
120ns
0V
Figure 2: PI2061 response time to output short fault condition
Picor Corporation • picorpower.com
PI2061
Rev 1.4
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