SRK2000DTR datasheet(7/19 Pages) STMICROELECTRONICS

Part #	SRK2000DTR

Description	Synchronous rectifier smart driver for LLC resonant converters

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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DocID17811 Rev 4

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SRK2000

Electrical characteristics

19

5

Electrical characteristics

TJ = -25 to 125 °C, VCC = 12 V, CGD1 = CGD2 = 4.7 nF, EN = VCC; unless otherwise

specified; typical values refer to TJ = 25 °C.

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max. Unit

Supply voltage

VCC

Operating range

After turn-on

4.5

-

32

V

VCCOn

Turn-on threshold

See(1)

4.25

4.5

4.75

V

VCCOff

Turn-off threshold

See(1)

4

4.25

4.5

V

Hys

Hysteresis

-

0.25

-

V

VCCZ

Zener voltage

ICCZ = 20 mA

33

36

39

V

Supply current

Istart-up

Startup current

Before turn-on, VCC = 4 V

-

45

70

µA

Iq

Quiescent current

After turn-on

-

250

500

µA

ICC

Operating supply current

At 300 kHz

-

35

-

mA

Iq

Quiescent current

EN = SGND

-

150

250

µA

Drain sensing inputs and synch functions

VDVS1,2_H Upper clamp voltage

IDVS1,2 = 20 mA

-

VCCZ

-V

IDVS1,2_b Input bias current

VDVS1,2 = 0 to VCC(2)

-1

-

1

µA

VDVS1,2_A

Arming voltage

(positive-going edge)

--

1.4

-

V

VDVS1,2_PT

Pre-triggering voltage

(negative-going edge)

--

0.7

-

V

VDVS1,2_TH Turn-on threshold

-

-250

-200

-180

mV

IDVS1,2_On Turn-on source current

VDVS1,2 = -250 mV

-

-50

-

µA

VDVS1,2_Off

Turn-off threshold

(positive-going edge)

R = 680 k

 from EN to VCC

-18

-25

-32

mV

R = 270 k

 from EN to VCC

-9

-12.5

-16

TPD_On

Turn-on debounce delay

After sourcing IDS1,2_On

-250

-

ns

TPD_Off

Turn-off propagation delay After crossing VDS1,2_Off

--

60

ns

TON_min

Minimum on-time

-

150

-

ns

DOFF

Min. operating duty-cycle

-

40

-

%

DON

Restart duty-cycle

-

60

-

%

Gate drive enable function

VEN_On

Enable threshold

Positive-going edge(1)

1.7

1.8

1.9

V

Hyst

Hysteresis

Below VEN_On

-45

-

mV

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