TEA1750T/N1,518 NXP Semiconductors, TEA1750T/N1,518 Datasheet - Page 14

• Manufacturer Part Number: TEA1750T/N1,518
• Description: IC PFC CONTROLLER DCM16SOIC
• Manufacturer: NXP Semiconductors
• Series: GreenChip™ IIIr

Specifications of TEA1750T/N1,518

• Mode: Discontinuous Conduction (DCM)
• Frequency - Switching: 125kHz
• Current - Startup: 60µA
• Voltage - Supply: 14 V ~ 22 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935282967518; TEA1750T-T; TEA1750T-T

NXP Semiconductors
TEA1750_2
Product data sheet
7.3.3 Current mode control (FBSENSE pin)
Current mode control is used for the flyback converter for its good line regulation.
The primary current is sensed by the FBSENSE pin across an external resistor and
compared with an internal control voltage.The internal control voltage is proportional to
the FBCTRL pin voltage.
Fig 9.
(1) Start of new cycle at lowest drain voltage.
(2) Start of new cycle in a classical Pulse Width Modulation (PWM) system without valley detection.
Signals for valley switching
secondary
oscillator
stroke
valley
drain
Rev. 02 — 15 December 2008
primary
stroke
secondary
stroke
secondary
ringing
GreenChip III SMPS control IC
(2)
014aaa027
TEA1750
© NXP B.V. 2008. All rights reserved.
(1)
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