NCP1253

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?PWM Controller, Current Mode, for Offline Power Supplies

制造商：ON

中文數(shù)據(jù)手冊(cè)

產(chǎn)品信息

The NCP1253 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP-6 package. With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back it's switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current. To avoid sub harmonic oscillations in CCM operation, adjustable slope compensation is available via the series inclusion of a simple resistor in the current sense signal. Besides the auto-recovery timer-based short-circuit protection, an Over Voltage Protection on the Vcc pin protects the whole circuitry in case of optocoupler destruction or adverse open loop operation.

Frequency Foldback down to 26 kHz and Skip-Cycle in Light Load
Internal Ramp Compensation
Frequency Jittering in Normal and Frequency Foldback modes
Over Voltage Protection (OVP) monitoring on the Vcc pin
Timer-based Auto-Recovery or Latched Short-Circuit Protection

在線購(gòu)買(mǎi)

型號(hào)	制造商	描述	購(gòu)買(mǎi)
NCP1253BSN100T1G	ON		立即購(gòu)買(mǎi)
NCP1253ASN65T1G	ON	IC PWM CTLR OCP LATCH	立即購(gòu)買(mǎi)
NCP1253ASN100T1G	ON	Converter Offline Flyback Topology 100kHz 6-TSOP	立即購(gòu)買(mǎi)
NCP1253BSN65T1G	ON	離線電源的電流型PWM控制器	立即購(gòu)買(mǎi)

技術(shù)資料

標(biāo)題	類(lèi)型	大?。↘B）	下載
Controller, Current Mode PWM, for Offline Power Supplies	PDF	215	點(diǎn)擊下載
TSOP-6	PDF	62	點(diǎn)擊下載

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