Product Summary

The L6591TR is a double-ended PWM controller for ZVS half-bridge. The L6591TR provides complementary PWM control, where the high-side switch is driven ON for a duty cycle D and the low-side switch for a duty cycle 1-D, with D 50 %. An externally programmable dead-time inserted between the turn-off of one switch and the turn-on of the other one guarantees soft-switching and enables high-frequency operation. The applications of the L6591TR include: High power AC-DC adapter/charger, Desktop PC, entry-level server, Telecom SMPS.

Parametrics

L6591TR absolute maximum ratings: (1)VHVSTART Voltage range (referred to ground): -0.3 to 700 V; (2)VBOOT Floating supply voltage: -1 to 618 V; (3)VFGND Floating ground voltage: -3 to VBOOT -18 V; (4)dVFGND/dt Floating ground slew rate: 50 V/ns; (5)Analog inputs and outputs: -0.3 to 7 V; (6)ISEN Current sense input: -3 to 7 V; (7)PTOT Power dissipation @ TA = 50 ℃: 0.75 W; (8)TJ Junction temperature operating range: -40 to 150 ℃; (9)TSTG Storage temperature: -55 to 150 ℃.

Features

L6591TR features: (1)Complementary PWM control for soft-switched half-bridge with programmable dead-time; (2)Up to 500 kHz operating frequency; (3)On-board high-voltage start-up; (4)Advanced light load management; (5)Adaptive UVLO; (6)Pulse-by-pulse OCP; (7)OLP (latched or autorestart); (8)Transformer saturation detection; (9)Interface with PFC controller; (10)Latched disable input; (11)Input for power-on sequencing or brownout protection; (12)Programmable soft-start; (13)4 % precision external reference.

Diagrams

L6591TR diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
L6591TR
L6591TR
STMicroelectronics
Switching Converters, Regulators & Controllers PWM CONTROLLER ZVS HALF-BRIDGE
Data Sheet
0-1950: $0.85
1950-2500: $0.84
2500-5000: $0.83
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
L6590AN
L6590AN
STMicroelectronics
Switching Converters, Regulators & Controllers 700 Volt Monolithic
Data Sheet
0-1: $2.43
1-10: $2.11
10-100: $1.57
100-250: $1.35
L6590ED
L6590ED
STMicroelectronics
Power Factor Correction ICs STEP DOWN SWITCH REG
Data Sheet
Negotiable 
L6590N
L6590N
STMicroelectronics
Switching Converters, Regulators & Controllers 700 Volt Monolithic
Data Sheet
Negotiable 
L6591
L6591
STMicroelectronics
Switching Converters, Regulators & Controllers PWM CONTROLLER ZVS HALF-BRIDGE
Data Sheet
0-1: $1.48
1-10: $1.39
10-100: $1.18
100-250: $1.09
L6591TR
L6591TR
STMicroelectronics
Switching Converters, Regulators & Controllers PWM CONTROLLER ZVS HALF-BRIDGE
Data Sheet
0-1950: $0.85
1950-2500: $0.84
2500-5000: $0.83
L6598D
L6598D
STMicroelectronics
PMIC Solutions High Volt Reson Cont
Data Sheet
0-1: $0.97
1-10: $0.93
10-100: $0.88
100-250: $0.85