tea1750t-n1 NXP Semiconductors, tea1750t-n1 Datasheet - Page 14

• Manufacturer Part Number: tea1750t-n1
• Description: Tea1750 Greenchip Iii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TEA1750_1
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. Signals for valley switching
(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.
secondary
oscillator
stroke
valley
drain
Rev. 01 — 6 April 2007
primary
stroke
secondary
stroke
secondary
ringing
GreenChip III SMPS control IC
(2)
014aaa027
TEA1750
© NXP B.V. 2007. All rights reserved.
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