L6599AD STMicroelectronics, L6599AD Datasheet - Page 26

• Manufacturer Part Number: L6599AD
• Description: IC RESONANT CONVRTR CTRLR 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6599AD

• Applications: Resonant Converter Controller
• Voltage - Supply: 8.85 V ~ 16 V
• Current - Supply: 3.5mA
• Operating Temperature: 0°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 16
• Number Of Outputs: Single Output
• Topology: Half-Bridge
• Output Voltage: 1.5 V
• Output Current: 800 mA
• Switching Frequency: 500 KHz
• Duty Cycle (max): 50 %
• Operating Supply Voltage: 8.85 V to 16 V
• Supply Current: 2 mA
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: - 40 C
• Fall Time: 30 ns
• Mounting Style: SMD/SMT
• Output Power: 0.83 W
• Rise Time: 60 ns
• Synchronous Pin: No
• For Use With: 497-10542 - BOARD EVAL BASED ON L6599497-8429 - BOARD ADAPTER L6599/STP12NM50N497-5496 - EVAL BOARD FOR L6599
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Compliant

Application information
26/31
Equation 13
where Qg is the gate charge of the external power MOS, R
bootstrap DMOS (150 W, typ.) and T
equals about half the switching period minus the dead time T
MOSFET with a total gate charge of 30nC, the drop on the bootstrap driver is about 3 V at a
switching frequency of 200 kHz:
Equation 14
If a significant drop on the bootstrap driver is an issue, an external ultra-fast diode can be
used, thus saving the drop on the R
V
V
Drop
Drop
=
=
I
2
Doc ID 15308 Rev 4
ch
5 .
arg
⋅
10
e
R
(DS)ON
charge
30
−
(
DS
6
⋅
−
)
10
on
. 0
is the ON-time of the bootstrap driver, which
of the internal DMOS.
−
+
27
9
V
⋅
F
10
=
−
T
6
ch
150
Q
arg
g
e
+
R
0
(DS)ON
(
6 .
DS
D
=
)
. For example, using a
on
2
+
7 .
is the on-resistance of the
V
V
F
L6599A