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參數(shù)資料
| 型號： | TSM115CN |
| 廠商： | 意法半導體 |
| 英文描述： | 3.3V +5V 【12V Housekeeping IC |
| 中文描述： | 3.3 5V的【12V的管家集成電路 |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 219K |
| 代理商： | TSM115CN |
Electrical Characteristics
TSM115
15/17
TSM115: Housekeeping IC
TSM115 is a one chip solution for all PC SMPS: it
integrates on one chip the Housekeeping Circuitry
(Over and under voltage and over current
protections, with adequate sequencing).
Multiple Power Line Protection
The TSM115 Housekeeping Circuit is dedicated
to 3.3V, 5V and ±12V power lines protection. It
integrates a multiple Over and under Voltage
Protection Circuit and a multiple over current
Protection Circuit as well as all the necessary
logic and transient timing management circuits for
optimal and secure communication with the
motherboard, during start up, switch off and
stabilized conditions.
Over Voltage Protection
The Over Voltage Protection Circuit is made of
comparators with internal voltage thresholds
which do not require any external components for
proper
operation.
The
comparators are ORed.
outputs
of
these
Under Voltage Protection
The Under Voltage Protection Circuit is made of
comparators with internal voltage thresholds
which do not require any external components for
proper
operation.
The
comparators are ORed, and blanked by an
internal delay circuitry (Power Up Blanking - Tuv)
which can be adjusted with an external capacitor
(Cuv). This allows that during power up, the under
voltage protection circuit is inhibited.
outputs
of
these
Over Current Protection
The Over current Protection Circuit is made of
comparators with external thresholds which can
be adjusted by changing a resistor. The outputs of
these comparators are ORed.
FAULT
The Over Voltage and Under Voltage Circuits
outputs are ORed before activating a latch. When
activated, this latch commands the full switch OFF
of the main power lines (3.3V, 5V, 12V) by an
external link between the housekeeping and the
primary PWM circuits via the main optocoupler or
any other device.
Power Good
The Under Voltage Circuits are Ored to switch the
Power Good output active (PG) to warn the
motherboard that the voltage of at least one of the
three power lines is out of range. The PG
activation bears an internal Tpg delay circuitry
which can be adjusted with an external capacitor
(Cpg).
Remote Control
The remote control information from the mother
board, enters via the Remote pin (REM) to
activate an internal latch. When the Remote pin is
active,
the
external
Housekeeping circuit and the PWM generator is
active (high = PWM OFF) and the PG pin is active
(high). Note that to reset effectively the latch, a
minimum width Remote pulse should be applied
thanks to an internal delay circuitry (Trem) which
can be adjusted with an external capacitor
(Crem).
Fault
link
between
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