SCY99079ADR2G 데이터 시트보기 (PDF) - ON Semiconductor

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SCY99079ADR2G

PWM Current-Mode Controller for High-Power Universal Off-Line Supplies

ON Semiconductor 

DAP018A/B/C/D/F

ELECTRICAL CHARACTERISTICS

(For typical values TJ = 25°C, for min/max values TJ = −25°C to +125°C, Max TJ = 150°C, VCC = 12 V unless otherwise noted)

DRIVE OUTPUT

Symbol

Rating

Pin Min

Typ

Max Unit

Tf

Output voltage fall−time @ CL = 1 nF, 10−90% of a 12 V output signal

Isource Source current capability at VDRV = 10.5 V

Isink Sink current capability at VDRV = 0 V

VDRVlow DRV pin level at VCC close to VCC(min) with a 33 kW resistor to GND

VDRVhigh DRV pin level at VCC = 28 V

CURRENT COMPARATOR

9

−

25

−

ns

9

−

500

−

mA

9

−

800

−

mA

9

7.6

−

−

V

9

10

15

17

V

Symbol

Rating

Pin Min

Typ

Max Unit

IIB

VLimit

TDEL

TLEB

TSS

Input Bias Current @ 0.8 V input level on pin 7

Maximum internal current setpoint – pin1 grounded

Propagation delay from current detection to gate off−state

Leading Edge Blanking Duration

Internal soft−start duration activated upon startup, auto−recovery and BO

release for versions B & D, pin 1 grounded.

7

0.02

mA

7

0.76

0.8

0.84

V

7

100

150

ns

7

140

ns

−

5

ms

IOPPo Setpoint decrease for pin 1 biased to –300 mV (Note 1)

1

37.5

%

IOOPv Voltage setpoint for pin 1 biased to −300 mV (Note 1)

1

0.46

0.5

0.54

V

IOPPs Setpoint decrease for pin 1grounded

1

0

%

INTERNAL OSCILLATOR

Symbol

Rating

Pin Min

Typ

Max Unit

fOSC

fOSC

Dmax

fjitter

fswing

ICjit

Oscillation frequency (65 kHz version, A & B)

Oscillation frequency (100 kHz version, C & D)

Maximum duty−cycle

Frequency jittering in percentage of fOSC

Swing frequency with a 22 nF capacitor to pin 4

Jittering modulator charging current

−

60

65

70

kHz

−

92

100

108 kHz

−

76

80

84

%

−

±5

%

4

300

Hz

4

18

mA

VCjitP Jittering capacitor peak voltage

4

2.2

V

VCjitV Jittering capacitor valley voltage

4

0.8

V

FEEDBACK SECTION

Symbol

Rating

Pin Min

Typ

Max Unit

Rup

Internal pull−up resistor

RFB

Equivalent resistor on FB pin

Iratio Pin 6 to current setpoint division ratio

FREQUENCY FOLDBACK

6

20

kW

16

kW

−

4.2

kW

Symbol

Rating

Pin Min

Typ

Max Unit

Ifold

Internal foldback reference current

5

8.5

10

11.5

mA

Vfold Frequency folback level with a 100 kW resistor to ground

5

1

V

Iskip

Skip current in percentage of the maximum excursion, for Vfold = 1 V

30

%

Ftrans Transition frequency below which skip−cycle occurs for TJ = 25°C

–

21

25

29

kHz

Vskip Skip−cycle level voltage on the feedback pin

6

320

mV

1. See characterization table for linearity over negative bias voltage.

2. Guaranteed by design.

3. The OTP parameters are selected to cope with a TTC03−474 which offers a resistance of 8.8 kW when heated to a temperature of 110°C.

4. The brown−out circuitry is disabled on versions A & C and operates on versions B & D.

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