L99DZ120 datasheet(42/162 Pages) STMICROELECTRONICS

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Electrical specifications

L99DZ120

42/162

DocID029145 Rev 4

3.4.15

Gate drivers for the external Power-MOS switching times

The voltages are referred to power ground and currents are assumed positive, when the

current flows into the pin. 6 V ≤ VS ≤ 28 V; 6 V ≤ VSREG ≤ 28 V; Tj = -40 °C to 150 °C, unless

otherwise specified.

RGSHx

Passive gate-clamp

resistance

VGHx = 0.5 V

kΩ

Drivers for external low-side Power-MOS

IGLx(Ch)

Average charge-current

(charge stage)

Tj = 25 °C

0.3

RGLx

On-resistance (discharge-

stage)

VSLx = 0 V; IGHx = 50 mA;

Tj = 25 °C

610

Ω

VSLx = 0 V; IGHx = 50 mA;

Tj = 130 °C

Ω

VGHLx

Gate-on voltage

VS = 6 V; ICP = 15 mA

VSLx + 6

VS = 12 V; ICP = 15 mA

VSLx + 8 VSLx + 10 VSLx + 11.5

RGSLx

Passive gate-clamp

resistance

kΩ

Table 20. H-bridge driver (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Table 21. Gate drivers for the external Power-MOS switching times

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

TG(HL)xHL

Propagation delay time high to low

(switch mode(1)

VS = 13.5 V; VSHx = 0;

RG = 0 Ω; CG = 2.7 nF

1.5

µs

TG(HL)xLH

Propagation delay time low to high

(switch mode)(1)

VS = 13.5 V; VSLx = 0;

RG = 0 Ω; CG = 2.7 nF

1.5

µs

IGHxrmax

Maximum source current (current

mode)

VS = 13.5 V; VSHx = 0;

VGHx = 1 V;

SLEW<4:0> = 1 FH

IGHxfmax

Maximum sink current (current

mode)

VS = 13.5 V, VSHx = 0;

VGHx = 2 V;

SLEW<4:0> = 1 FH

dIIGHxr

Source current accuracy

VS = 13.5 V; VSHx = 0;

VGHx = 1 V

See Figure 14: IGHxr

ranges

dIIGHxf

Sink current accuracy

VS = 13.5 V; VSHx = 0;

VGHx = 2 V

See Figure 15: IGHxf

ranges

VDSHxrSW

Switching voltage (VS-VSH)

between current mode and switch

mode (rising)

VS = 13.5 V

2.8

VDSHxfSW

Switching voltage (VS-VSH)

between switch mode and current

mode (falling)

VS = 13.5 V

2.8

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