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TOP252-262 Datasheet(PDF) 20 Page - Power Integrations, Inc. |
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TOP252-262 Datasheet(HTML) 20 Page - Power Integrations, Inc. |
20 / 48 page Rev. F 01/09 20 TOP252-262 www.powerint.com Typical Uses of MULTI-FUNCTION (M) Pin (cont.) PI-4757-120307 DC Input Voltage Sense Output Voltage + - DM S C V UV = IUV × RLS +VM (IM = IUV) V OV =IOV ×RLS +VM (IM = IOV) For R LS = 4 M V UV = 102.8 VDC V OV = 451 VDC DC MAX @ 100 VDC = 76% DC MAX @ 375 VDC = 41% CONTROL R LS 4 M 10 k Q R Reset Figure 40. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and Latched Output Overvoltage Protection with Device Reset. PI-4736-060607 DC Input Voltage + - D S C R IL R MC 24 k 12 k M CONTROL Q R 2R IL R MC = Q R can be an optocoupler output or can be replaced by a manual switch. ON/OFF 7 k Figure 39. Active-off Remote ON/OFF with Externally Set Current Limit (see M Pin Operation Description). PI-4735-092107 DC Input Voltage + - D S C Q R R IL M CONTROL 12 k For R IL = I LIMIT = 61% Q R can be an optocoupler output or can be replaced by a manual switch. ON/OFF 16 k 19 k For R IL = I LIMIT = 37% Figure 38. Active-on Remote ON/OFF with Externally Set Current Limit (see M Pin Operation Description). PI-2519-040501 DC Input Voltage + - D S C Q R ON/OFF M CONTROL Q R can be an optocoupler output or can be replaced by a manual switch. 47 k Figure 37. Active-on (Fail Safe) Remote ON/OFF. |
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