Electrical specifications

L9907

24/49

DS11800 Rev 5

RGxx

Gate source passive discharge

resistance

-

100

200

500

kΩ

tGHxlh

Propagation delay time low to high

VB = 13.5 V, Cg = 22 nF

-

-

300

ns

tGLxlh

Propagation delay time low to high

VB = 13.5 V, Cg = 22 nF

-

-

300

ns

tGHxhl

Propagation delay time high to low

VB = 13.5 V, Cg = 22 nF

-

-

300

ns

tGLxhl

Propagation delay time high to low

VB = 13.5 V, Cg = 22 nF

-

-

300

ns

fPWM

PWM Switching frequency

-

-

-

20

kHz

Q

Drivable gate charge(3)

VGS = 10 V, 20 kHz

300

-

900

nC

tDT

Dead time (adjustable in 4 steps via

2-bit SPI Register)

DT1, DT0 = 00 (default)

100

-

200

ns

DT1, DT0 = 01

300

-

500

ns

DT1, DT0 = 10

700

-

1000

ns

DT1, DT0 = 11

1000

-

1500

ns

1. Only for turn-on currents with GCR = 1 kW: parameter is tested at hot temperature only; other temperatures are granted by

design.

2. I = 400 µA + 2.872/GCR.

3. Design information. The IC does not provide any active internal Gate Charge limit.

Table 17. MOSFET drivers electrical characteristics (continued)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Table 18. External MOSFET overcurrent drop voltage sense

Symbol

Parameter

Test condition(1)

Min

Typ

Max

Unit

VSC_LS

Short circuit detection threshold low-

side (adjustable in 4 steps via 2 bits

SPI register)

SC_LS1, SC_LS0 = 00

(default)

0.4

0.5

0.6

V

SC_LS1, SC_LS0 = 01

0.7

0.8

0.9

V

SC_LS1, SC_LS0 = 10

0.9

1

1.1

V

SC_LS1, SC_LS0 = 11

1.17

1.3

1.43

V

VSC_HS

Short Circuit detection threshold high-

side (adjustable in 4 steps via 2 bits

SPI register)

SC_HS1, SC_HS0 = 00

(default)

0.4

0.5

0.6

V

SC_HS1, SC_HS0 = 01

0.7

0.8

0.9

V

SC_HS1, SC_HS0 = 10

0.9

1

1.1

V

SC_HS1, SC_HS0 = 11

1.17

1.3

1.43

V

TSCoff

Short Circuit shut down delay (the

circuit shuts down by short circuit

longer than TSCoff; guaranteed

through scan)

Masking time at switch

ON

912

14(2)

µs

Filter Time in normal

operation

1-

2

µs

VSC TEST

Test functions for short circuit detection

level (SCDL)(3)

VSCTST=1 (CMD2, B7)

-0.7

-0.5

-0.3

V

1. The accuracy of SC detection thresholds for HS and LS is guaranteed for VB ≥ 6 V. In case VB < 6 V the accuracy for each

configuration, both for HS and LS, is 22.5%.

2. The PWM ON time must be longer than this Short Circuit shutdown delay, else the short circuit condition cannot be

detected.

3. Security Level test function. If this function is selected via SPI, the short circuit detection threshold is set to the specified

negative level. In this way a short circuit is detected even if the current in the external MOSFET is zero, that is Vds=0.