DPA426 データシートの表示（PDF） - Power Integrations, Inc

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DPA426

Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications

Power Integrations, Inc 

DPA422-426

Output

MOSFET

Switching

(Enabled)

(Disabled)

Current

Limit

ILIMIT (Default)

IREM(U)

Output

MOSFET

Switching

IUV(U)

IOV(U)

(Enabled)

(Disabled)

Maximum

Duty Cycle

DCMAX (75%)

X Pin Voltage

-21.5 µA

-25.5 µA

VBG

L Pin Voltage

47 µA

VBG + VTP

131 µA

135 µA

-250 -200 -150 -100 -50

0

X Pin Current (µA)

0

50 100 150 200 250

L Pin Current (µA)

Note: These gures provide idealized functional characteristics with typical performance values. Please refer to the

parametric table and typical performance characteristics sections of the data sheet for measured data.

Figure 7. LINE-SENSE and EXTERNAL CURRENT LIMIT Pin Characteristics.

PI-2778-080801

CONTROL (C)

230 ∝A

DPA-Switch

EXTERNAL CURRENT LIMIT (X)

LINE-SENSE (L)

(Negative Current Sense - ON/OFF,

Current Limit Adjustment)

VBG + VT

(Voltage Sense)

VBG

1V

(Positive Current Sense - Under-Voltage,

Overvoltage, ON/OFF Maximum Duty

Cycle Reduction)

240 ∝A

Figure 8. LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplified Schematic

PI-2765-061704

10

Rev. T 12/12

www.powerint.com

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