NCP12400

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8

Table 5. ELECTRICAL CHARACTERISTICS

(For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VHV = 125 V, VCC = 11 V unless otherwise noted)

Characteristics

Unit

Max

Typ

Min

Symbol

Test Condition

REMOTE CONTROL ON FB PIN

The voltage above which the part enters the

on mode

VCC > VCC(off), VHV = 60 V

VON

−

2.2

−

V

The voltage below which the part enters the

off mode

VCC > VCC(off)

VOFF

0.5

0.6

0.7

V

Minimum hysteresis between the VON and

VOFF

VCC > VCC(off), VHV = 60 V

VHYST

500

−

−

mV

Pull−up current in off mode

VCC > VCC(off)

IOFF

−

5

−

mA

Go To Off mode timer

VCC > VCC(off)

tGTOM

400

500

600

ms

OVERLOAD PROTECTION

Fault timer duration

tfault

108

128

178

ms

Fault timer reset time

VCS < 0.7 V, D < 90% DMAX

tfault,res

150

200

250

ms

Autorecovery mode latch−off time duration

tautorec

0.85

1.00

1.35

s

OVERPOWER PROTECTION

VHV to IOPC conversion ratio

KOPC

−

0.54

−

mA / V

Current flowing out of CS pin (Note 7)

VHV = 125 V

VHV = 162 V

VHV = 325 V

VHV = 365 V

IOPC(125)

IOPC(162)

IOPC(325)

IOPC(365)

−

−

−

105

0

20

110

130

−

−

−

150

mA

FB voltage above which IOPC is applied

VHV = 365 V

VFB(OPCF)

−

2.6

−

V

FB voltage below which is no IOPC applied

VHV = 365 V

VFB(OPCE)

−

1.6

−

V

FAULT INPUT

High threshold

VLatch going up

VOVP

2.43

2.50

2.57

V

Low threshold

VLatch going down, TJ = 25°C

VOTP

0.380

0.400

0.420

V

OTP resistance threshold (TJ = 25°C)

External NTC resistance is going

down

ROTP

7.6

8.0

8.5

kW

OTP resistance threshold (TJ = 80°C)

External NTC resistance is going

down

ROTP

−

8.5

−

kW

OTP resistance threshold (TJ = 110°C)

External NTC resistance is going

down

ROTP

−

9.5

−

kW

Current source for direct NTC connection

During normal operation

During soft−start

VLatch = 0.2 V

INTC

INTC(SSTART)

30

60

50

100

70

140

mA

Current source for direct NTC connection

During normal operation

VLatch = 0.2 V, TJ = 25°C

INTC

47

50

53

mA

Blanking duration on high latch detection

tLatch(OVP)

35

50

70

ms

Blanking duration on low latch detection

tLatch(OTP)

−

350

−

ms

Clamping voltage

ILatch = 0 mA

ILatch = 1 mA

Vclamp0(Latch)

Vclamp1(Latch)

1.0

1.8

1.2

2.4

1.4

3.0

V

TEMPERATURE SHUTDOWN

Temperature shutdown

TJ going up

TTSD

−

150

−

°C

Temperature shutdown hysteresis

TJ going down

TTSD(HYS)

−

30

−

°C

6. Guaranteed by design.

7. CS pin source current is a sum of Ibias and IOPC, thus at VHV = 125 V is observed the Ibias only, because IOPC is switched off.

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.