LM5122ZA

Name: LM5122ZA
Brand: TI
SKU: LM5122ZA
Price: 1.742 USD

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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

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Datenblatt

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Produktdetails

Vin (min) (V)

3

Vin (max) (V)

65

Operating temperature range (°C)

-40 to 125

Control mode

current mode

Topology

Boost, Flyback, Forward, SEPIC

Rating

Catalog

Vout (min) (V)

3

Vout (max) (V)

100

Features

Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable

Iq (typ) (µA)

4000

Duty cycle (max) (%)

100

Vin (min) (V)

3

Vin (max) (V)

65

Operating temperature range (°C)

-40 to 125

Control mode

current mode

Topology

Boost, Flyback, Forward, SEPIC

Rating

Catalog

Vout (min) (V)

3

Vout (max) (V)

100

Features

Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable

Iq (typ) (µA)

4000

Duty cycle (max) (%)

100

HTSSOP (PWP)

24

49.92 mm² 7.8 x 6.4

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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Alle anzeigen 3

	Typ	Titel		Datum
*	Data sheet	LM5122ZA Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. A)	PDF \| HTML	07 Nov 2018
	White paper	An overview of radiated EMI specifications for power supplies		05 Jun 2018
	White paper	An overview of conducted EMI specifications for power supplies		01 Feb 2018

Design und Entwicklung

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