NCP1560 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1560

Full Featured Voltage Mode PWM Controller

ON Semiconductor 

NCP1560

1

Vin

ISTART

Disable

VAUX

16

VAUX

CAUX

+

14

−

GND

Vin

+

1.52 V

−

2

VAUX(on)/AUX(off)

Disable_VREF

+

−

One Shot

Pulse

(250 ns)

S

Q

Monotonic

Start

Latch

(Reset

Dominant)

R

5.0 V Reference

DIS

VREF

11

Disable_VREF

RD

UV/OV

+

−

+

3.61 V −

VREF

12.3 mA Disable −

CSKIP

+

6

CCSKIP

5

CS

−

+

+

One Shot

2V

−

Pulse

(600 ns)

+

−

+

0.57 V

−

Clock

STOP

Disable_ss

S

Q

Output

Latch

(Reset

Dominant)

R

Delay

Logic

12

tD

DIS 15

OUT1

VAUX

DIS

13

OUT2

VAUX

VREF

+

+−

0.5 V

−

Soft Start

− + Comparator

6 mA

9

Disable_ss

CURRENT MIRROR

I1

I1

2

Oscillator Ramp

2V

SS

CSS

STOP

10 pF

7

RT +

RT

1.3 V*

−

* Trimmed during

manufacturing to obtain

1.3 V with RT = 101 kW

+

2V

−

Vin

RFF 4

5.3 kW

FF

IFF 6.7 kW

+

V

−

Clock

I

+

V

125 kW

+

−

One Shot

Pulse

FF Ramp

(Adjustable)

+

−

+

2V

−

PWM

Comparator

+−

10

VEA

2 kW

20 kW

Max DC

+ − Comparator

2V

40 kW

+

32 kW

VDC(inv)

−

27 kW

VREF

RMDP

8

DCMAX

RP

10 pF CFF

Figure 2. NCP1560 Functional Block Diagram

http://onsemi.com

3

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