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Содержание DC1317A-B

Страница 1: ...72Vin to 24V 5A DC1317A E 36 72Vin to 5V 12A DC1317A F 9 36Vin to 3 3V 20A DC1317A G 9 36Vin to 12V 5A DC1317A H 9 36Vin to 48V 1 5A The DC1317 circuit features soft start which prevents output voltage overshoot on startup or when recover ing from overload condition The DC1317 has precise over current protection cir cuit that allows for continuous operation under short circuit conditions The low p...

Страница 2: ...irectly across the Vin or Vout and GND terminals See Figure 2 for proper scope probe technique 1 1 1 1 With power off connect the input power supply to Vin and GND Make sure that the input power sup ply has sufficient current rating at minimum input voltage for the required output load 2 2 2 2 Turn on the power at the input NOTE NOTE NOTE NOTE Make sure that the input voltage does not exceed 72V 3...

Страница 3: ...P Channel MOSFET Q13 and reset capacitor C25 The MOSFET Q13 is used to connect the reset capacitor across the transformer T1 primary winding during the reset period when Q1 MOSFET is off The voltage across capacitor C25 automatically adjusts with the duty cycle to provide complete transformer reset under all oper ating conditions Also the active reset circuit shapes the reset voltage into a square...

Страница 4: ...nsient response of DC1317 is Figure 4 Fast transient response of DC1317 is Figure 4 Fast transient response of DC1317 is s s s su u u uperior to many competing power modules perior to many competing power modules perior to many competing power modules perior to many competing power modules without the additional output capac without the additional output capac without the additional output capac w...

Страница 5: ...es The PCB layout schematic does not show the compo nent values In some cases a different component like a diode is used in a place holder for a capacitor such as in the case of C6 Please modify the reference designators in your schematic to reflect the actual component used The following simple PCB layout rules should be help ful If possible use solid ground planes on layers 2 and n 1 The ground ...

Страница 6: ...X55 R10 1k D9 PDZ7 5B R8 1uF FG FG CG CG C3 1u R5 10R Q12 BC856T D3 Q10 PBSS8110 Vb Vb L2 1 5mH U6 PS2801 1 T1 Inp 3 Vcc 1 TS 4 Boost 6 GND 2 TG 5 U2 LTC4440 5 C21 470p D1 BAS516 Vu1 D11 BAS516 GND Vout C7 220p Out C8 100p C6 BAS516 D7 B0540W C4 BAS516 Csys 470uF 6 3V C24 22p C9 100p C25 33n Q13 Si2325 D14 BAS516 R45 10k Vr2 Vr2 Co3 D17 BAS516 R53 200 2 5 7 8 10 11 C33 0 1u R29 PMEG3002 R2 560k C3...

Страница 7: ...B ACTIVE RESET ISOLATED 18 72V INPUT TO 5V 25A DC DC POWER CONVERTER 7 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Страница 8: ...T ISOLATED 18 72V INPUT TO 5V 25A DC DC POWER CONVERTER 8 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

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