Creator Electronics MAX1301 Especificaciones descargar pdf (Pagina 38)

33PLCs: Featured Products

High Level of Integration Reduces Design

Cost and Complexity in Universal Oine

Power Supplies

MAX17497, MAX17498

The MAX17497 simplies your power design by eliminating multiple discrete

components. This multiple-output device integrates the control circuitry needed

for a universal (85V to 265V AC) yback/forward power supply. It also integrates

a secondary-side synchronous buck regulator with on-board MOSFETs.

The MAX17497 combines a current mode PWM yback/forward regulator,

which contains all the control circuitry required for design of wide input

voltage nonisolated power supplies, and a synchronous buck regulator. The

MAX17498 is an easy to use current mode PWM yback/forward regulator for

oine AC-DC or stand-alone DC-DC yback/forward/boost applications.

Benefits

• High integration reduces BOM

◦ Two on-board regulators: AC-DC and

DC-DC combined

◦ Power FETs integrated

• Enables small solution

◦ Fast 500kHz switching allows use of

small external components

+3.3V, 250mA

+12V, 750mA

L1 L2 L3 N

EXTERNAL

CASCODE

BUCK

CONTROL

• 1MHz

• INTERNAL COMP

• PRESET OUTPUT

• INTERNAL SS

FLYBACK

CONTROL

• 250kHz/500kHz

• EXTERNAL COMP

• EXTERNAL SS

• PROTECTION

MAX17497

Simplified application circuit for the MAX17497.

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Creator Electronics MAX1301 Especificaciones Pagina 38