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TEA1532BT 데이터시트(PDF) 5 Page - NXP Semiconductors |
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TEA1532BT 데이터시트(HTML) 5 Page - NXP Semiconductors |
5 / 23 page TEA1532BT_TEA1532CT_1 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 01 — 18 January 2007 5 of 23 NXP Semiconductors TEA1532BT; TEA1532CT GreenChip II SMPS control IC The TEA1532BT; TEA1532CT can operate in multi modes; see Figure 4. In QR mode, the next converter stroke is started only after demagnetization of the transformer current (zero current switching), while the drain voltage has reached the lowest voltage to minimize switching losses (green function). The primary resonant circuit of primary inductance and drain capacitor ensures this quasi-resonant operation. The design can be optimized in such a way that zero voltage switching can extend over most of the universal mains range. Fig 3. Basic configuration Fig 4. Multi mode and FF-CCM operation coa048 1 CVCC CVIN Vi 2 3 4 8 7 6 5 TEA1532BT TEA1532CT Cycle skip fixed FF-CCM P (W) coa049 f (kHz) 125 QR |
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