LM5122ZA

AKTIV

Mehrphasenfähiger synchroner Strommodus-Aufwärtscontroller mit breitem Eingangsspannungsbereich, 3-6

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Datenblatt

document-pdfAcrobat LM5122ZA Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. A) (Englisch) PDF | HTML

LM5122ZA

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

65

Vin (min) (V)

3

Vout (max) (V)

100

Vout (min) (V)

3

Control mode

current mode

Features

Enable, Frequency synchronization, Phase interleaving, Synchronous rectification, UVLO adjustable

Duty cycle (max) (%)

100

Iq (typ) (A)

0.004

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

65

Vin (min) (V)

3

Vout (max) (V)

100

Vout (min) (V)

3

Control mode

current mode

Features

Enable, Frequency synchronization, Phase interleaving, Synchronous rectification, UVLO adjustable

Duty cycle (max) (%)

100

Iq (typ) (A)

0.004

Operating temperature range (°C)

-40 to 125

HTSSOP (PWP)

24

49.92 mm² (7.8 mm × 6.4 mm)

Maximum Input Voltage: 65 V
Minimum Input Voltage: 3 V (4.5 V for Start-Up)
Output Voltage up to 100 V
Bypass (V_OUT = V_IN) Operation
1.2-V Reference with ±1% Accuracy
Free-Run and Synchronizable Switching to 1 MHz
Peak-Current-Mode Control
Robust 3-A Integrated Gate Drivers
Adaptive Dead-Time Control
Optional Diode-Emulation Mode
Programmable Cycle-by-Cycle Current Limit
Hiccup-Mode Overload Protection
Programmable Line UVLO
Programmable Soft Start
Thermal Shutdown Protection
Low Shutdown Quiescent Current: 9 µA
Programmable Slope Compensation
Programmable Skip-Cycle Mode Reduces Standby Power
Allows External VCC Supply
Inductor DCR Current Sensing Capability
Multi-phase Capability
Thermally Enhanced 24-Pin HTSSOP

Maximum Input Voltage: 65 V
Minimum Input Voltage: 3 V (4.5 V for Start-Up)
Output Voltage up to 100 V
Bypass (V_OUT = V_IN) Operation
1.2-V Reference with ±1% Accuracy
Free-Run and Synchronizable Switching to 1 MHz
Peak-Current-Mode Control
Robust 3-A Integrated Gate Drivers
Adaptive Dead-Time Control
Optional Diode-Emulation Mode
Programmable Cycle-by-Cycle Current Limit
Hiccup-Mode Overload Protection
Programmable Line UVLO
Programmable Soft Start
Thermal Shutdown Protection
Low Shutdown Quiescent Current: 9 µA
Programmable Slope Compensation
Programmable Skip-Cycle Mode Reduces Standby Power
Allows External VCC Supply
Inductor DCR Current Sensing Capability
Multi-phase Capability
Thermally Enhanced 24-Pin HTSSOP

The LM5122ZA is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

The LM5122ZA is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LM5122ZA Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. A)	PDF \| HTML	07.11.2018
	Whitepaper	An overview of radiated EMI specifications for power supplies		05.06.2018
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Design und Entwicklung

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