TEA1791T/N1,118 NXP Semiconductors, TEA1791T/N1,118 Datasheet - Page 7

IC CTRLR GREENCHIP SYNC 8-SOIC

TEA1791T/N1,118

Manufacturer Part Number
TEA1791T/N1,118
Description
IC CTRLR GREENCHIP SYNC 8-SOIC
Manufacturer
NXP Semiconductors
Series
GreenChip™r
Datasheet

Specifications of TEA1791T/N1,118

Package / Case
8-SOIC (3.9mm Width)
Mode
Discontinuous Conduction (DCM)
Voltage - Supply
8.5 V ~ 38 V
Operating Temperature
-20°C ~ 150°C
Mounting Type
Surface Mount
Output Voltage
10 V
Supply Current
0.65 mA
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Current - Startup
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
935287392118
NXP Semiconductors
11. Application information
TEA1791T
Product data sheet
A switched mode power supply with the TEA1791T consists of a primary side
discontinuous conduction mode flyback controller, a transformer, and an output stage with
a feedback circuit. A MOSFET (Q
This MOSFET is controlled by the TEA1791T.
The timing for the synchronous rectifier switch is derived from the voltage sensed on the
SRSENSE pin. The resistor in the SRSENSE connection is needed to protect the
TEA1791T from excessive voltages. The R
Higher values might impair correct timing, lower values may not provide sufficient
protection.
Fig 4.
Fig 5.
V
in
CONTROLLER
V
Application diagram high side rectification
Application diagram low side rectification
in
PRIMARY
CONTROLLER
SIDE
PRIMARY
All information provided in this document is subject to legal disclaimers.
SIDE
Rev. 02 — 7 June 2010
Q prim
TR
Q prim
Q sec
TR
sec
R SRSENSE
) is used for low conduction losses in the output state.
SRSENSE
DRIVER
SRSENSE
GreenChip synchronous rectifier controller
V
CC
GND
TEA1791T
TEA1791T
resistor should typically be 1 kΩ.
DRIVER
V
GND
CC
Q sec
SRSENSE
R SRSENSE
TEA1791T
014aaa849
© NXP B.V. 2010. All rights reserved.
C out
V
out
014aaa702
C out
V
out
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