L6599AD STMicroelectronics, L6599AD Datasheet - Page 14

• 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
14/31
Figure 5.
The following approximate relationships hold for the minimum and the maximum oscillator
frequency respectively:
Equation 1
After fixing CF in the hundred pF or in the nF (consistently with the maximum source
capability of the RFmin pin and trading this off against the total consumption of the device),
the value of RF
cover the entire range needed for regulation, from the minimum value f
voltage and maximum load) to the maximum value f
minimum load):
Equation 2
A different selection criterion will be given for R
will be used (see
Oscillator's internal block diagram
min
Section 6.2: Operation at no load or very light
and RF
f
min
=
3
RF
max
⋅
CF
min
Doc ID 15308 Rev 4
will be selected so that the oscillator frequency is able to
1
⋅
=
RF
3
min
⋅
CF
1
⋅
;
f
min
f
max
Fmax
;
=
RF
3
⋅
in case burst-mode operation at no-load
max
max
CF
⋅
(at maximum input voltage and
=
(
RF
f
f
max
RF
min
1
min
min
−
//
load).
1
RF
max
min
)
(at minimum input
L6599A