NCP1607

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5

ELECTRICAL CHARACTERISTICS

(For typical values, TJ = 25°C. For min/max values, TJ = −40°C to +125°C, unless otherwise specified,

VCC = 12 V, VFB = 2.4 V, VCS = 0 V, VCONTROL = open, VZCD = open, CDRV = 1 nF, CT = 1 nF)

Characteristics

Unit

Max

Typ

Min

Symbol

Current Capability of the Negative Active Clamp:

in normal mode (VZCD = 300 mV)

in shutdown mode (VZCD = 100 mV)

ICL(NEG)

2.5

35

3.7

70

5.0

100

mA

mA

Shutdown Threshold (VZCD falling)

VSDL

150

205

250

mV

Enable Threshold (VZCD rising)

VSDH

−

290

350

mV

Shutdown Comparator Hysteresis

VSD(HYS)

−

85

−

mV

Zero Current Detection Propagation Delay

tZCD

−

100

170

ns

Minimum Detectable ZCD Pulse Width

tSYNC

−

70

−

ns

Drive off Restart Timer

tSTART

75

179

300

ms

RAMP CONTROL

Ct Charge Current (VCT = 0 V)

−25

°C < TJ < +125°C

−40

°C < TJ < +125°C

ICHARGE

243

235

270

270

297

297

mA

Time to discharge a 1 nF Ct capacitor from VCT = 3.4 V to 100 mV.

tCT(discharge)

−

−

100

ns

Maximum Ct level before DRV switches off

−25

°C < TJ < +125°C

−40

°C < TJ < +125°C

VCTMAX

2.9

2.9

3.2

3.2

3.3

3.4

V

PWM Propagation Delay

tPWM

−

142

220

ns

OVER AND UNDERVOLTAGE PROTECTION

Dynamic Overvoltage Protection (OVP) Triggering Current:

TJ = 25°C

TJ = −40°C to +125°C

IOVP

9.0

8.7

10.5

−

11.8

12.1

mA

Hysteresis of the dynamic OVP current before the OVP latch is released

IOVP(HYS)

−

8.5

−

mA

Static OVP Threshold Voltage

VOVP

−

VEAL +

100 mV

−

V

Undervoltage Protection (UVP) Threshold Voltage

VUVP

0.25

0.302

0.4

V

GATE DRIVE SECTION

Gate Drive Resistance:

ROH @ ISOURCE = 100 mA

ROL @ ISINK = 100 mA

ROH

ROL

−

−

12

6.0

18

10

W

Drive voltage rise time from 10% VCC to 90% VCC

trise

−

30

80

ns

Drive voltage fall time from 90% VCC to 10% VCC

tfall

−

25

70

ns

Driver output voltage at VCC = VCC(on) − 200 mV and Isink = 10 mA

VOUT(start)

−

−

0.2

V

3. Parameter values are valid for transient conditions only.

4. Parameter characterized and guaranteed by design, but not tested in production.

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.