STCH02 datasheet(8/24 Pages) STMICROELECTRONICS

номер детали	STCH02

подробное описание детали	Offline PWM controller for ultra-low standby adapters

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производитель	STMICROELECTRONICS [STMicroelectronics]

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8 / 24 page

Device description and block diagram

STCH02

8/24

DocID028766 Rev 1

TD-ON

Turn-on delay time after triggering

VGATE = 6 V, CGATE = 1 nF

270

ns

TFORCE

Force turn-on time after blanking

10

14

µs

Gate driver

VGDL

Output high voltage

VDD = 8.5 V; IGATE = 5 mA

7

V

IGATE = 5 mA

10.5

13

TRISE

Rising time

CGATE = 1 nF

70

110

150

ns

TFALL

Falling time

CGATE = 1 nF

20

40

60

ns

VGDL

Output low voltage

IGD-SINK = 50 mA

1

V

Line feedforward

RFF

Equivalent feedforward resistor

IZCD = 1 mA

63

70

77



Feedback input

VFBH

Upper saturation

3.45

V

HFB

Current sense gain

3.22

3.29

3.36

IFB

Feedback source current

70

100

130

µA

VFBB

Burst mode threshold

Voltage falling

0.54

0.6

0.66

V

VFBF

Exit burst mode threshold

0.64

0.72

0.8

V

VHYST

Burst mode hysteresis

50

65

75

mV

Current reference

VREFx

Maximum value

Internal, not measured

0.8

V

KI

Current loop gain

0.19

0.2

0.21

V

Overvoltage protection

VOVP

OVP threshold

2.375

2.5

2.625

V

NOVP

Consecutive cycles for OVP triggering

VOVP = 2.5 V

4

Current sense

TLEB

Leading edge blanking

VGATE = 6 V, COUT = 1 nF

270

380

490

ns

TD

Gate delay to output

VGATE = 6 V, COUT = 1 nF

150

ns

VCSx

Max. clamp value

dVCS/dt = 200 mV/µs

0.7

0.75

0.8

V

VOCP

Hiccup mode OCP level

0.95

1

1.05

V

VSENSE_BM Minimum burst mode sense voltage

72

mV

Table 5. Electrical characteristics

(Tj = - 25° to 125 °C, VDD = 14 V, unless otherwise specified) (continued)

Symbol

Parameter

Test condition

Min.

Typ. Max.

Unit

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