RAA220001 Driver Datasheet

RAA220001 Datasheet, PDF, Equivalent


Part Number

RAA220001

Description

Synchronous Rectified Buck MOSFET Driver

Manufacture

Renesas

Total Page 15 Pages
Datasheet
Download RAA220001 Datasheet


RAA220001
Datasheet
RAA220001
Synchronous Rectified Buck MOSFET Driver
The RAA220001 is a high frequency MOSFET driver
designed to drive upper and lower power N-channel
MOSFETs in a synchronous rectified buck converter
topology.
In the RAA220001, the upper and lower gates are
both driven to an externally applied voltage that
provides the capability to optimize applications
involving trade-offs between gate charge and
conduction losses.
An advanced adaptive shoot-through protection is
integrated to prevent both the upper and lower
MOSFETs from conducting simultaneously and to
minimize dead time. The RAA220001 has a 10kΩ
integrated high-side gate-to-source resistor to prevent
self turn-on due to high input bus dV/dt.
This driver also has an overvoltage protection feature
that is operational while VCC is below the POR
threshold. The PHASE node is connected to the gate
of the low-side MOSFET (LGATE) through a 30kΩ
resistor, limiting the output voltage of the converter
close to the gate threshold of the low-side MOSFET.
This design is dependent on the current being
shunted, which provides some protection to the load
should the upper MOSFET(s) become shorted.
Applications
• High light-load efficiency voltage regulators
• Core regulators for advanced microprocessors
• High current DC/DC converters
Features
• Dual MOSFET drives for synchronous rectified
bridge
• Advanced adaptive zero shoot-through protection
○ PHASE detection
○ LGATE detection
○ Auto-zero of rDS(ON) conduction offset effect
• Low standby bias current
• 36V internal bootstrap switcher
• Bootstrap capacitor overcharging prevention
• Integrated high-side gate-to-source resistor to
prevent from self turn-on due to high input bus dV/dt
• Pre-POR overvoltage protection for start-up and
shutdown
• Power rails undervoltage protection
• Expandable bottom copper pad for enhanced heat
sinking
• Dual flat no-lead (DFN) package
• Near chip-scale package footprint; improves PCB
efficiency and thinner in profile
• Pb-free (RoHS compliant)
Related Literature
For a full list of related documents, visit our website:
RAA220001 device page
VCC
Pin 6
PWM
+5V
40k
22.4k
POR/
Control
Logic
Shoot-
Through
Protection
R16DS0005EU0100 Rev.1.00
Jul.11.19
Figure 1. Block Diagram
BOOT
UGATE
10k
PHASE
30k
Pin 7
VCC
Pins 6 and 7 must be
tied together
LGATE
GND
Page 1 of 15

RAA220001
RAA220001
1. Overview
1.1 Typical Applications
3.3V
1µF
10µF
EN0
PG0
VCC
VCCS
12V
0.1µF
VINSEN
PSYSIN
RAA229001
SVCLK
SVDATA
nSVALERT
GP0
nVRHOT
CFP
PMSCL
PMSDA
nPMALERT
RGND0
VSEN0
TEMP0
PWM0
CS0
CSRTN0
PWM1
CS1
CSRTN1
PWM2
CS2
CSRTN2
PWM3
CS3
CSRTN3
PWM4
CS4
CSRTN4
3300pF
47pF 22k
RAA220002
PWM0
PHASE0
UGATE0
BOOT0
12V VCC12 LGATE0
GND
12V VCC12 PHASE1
UGATE1
BOOT1
PWM1
LGATE1
RAA220002
PWM0
PHASE0
UGATE0
BOOT0
12V
VCC12
LGATE0
GND
12V
VCC12
PHASE1
UGATE1
BOOT1
PWM1
LGATE1
RAA220001
12V
VCC
BOOT UGATE
GND
PHASE
PWM
LGATE
VIN
VIN
VIN
VIN
VIN
PWM5
CS5
CSRTN5
1. Overview
NTC 10k
COUT
VCORE
ADDR
PG1
EN1
PWM6
CS6
CSRTN6
PWM7
CS7
CSRTN7
TEMP1
RAA220002
PWM0
PHASE0
UGATE0
BOOT0
12V
VCC12
LGATE0
GND
12V
VCC12
PHASE1
UGATE1
BOOT1
PWM1
LGATE1
47pF 22k
VIN
VIN
RGND1
VSEN1
3300pF
Figure 2. Intel 5+2 with Single-Dual Driver
NTC 10k
COUT
VGT
R16DS0005EU0100 Rev.1.00
Jul.11.19
Page 2 of 15


Features Datasheet RAA220001 Synchronous Rectifi ed Buck MOSFET Driver The RAA220001 is a high frequency MOSFET driver designe d to drive upper and lower power N-chan nel MOSFETs in a synchronous rectified buck converter topology. In the RAA2200 01, the upper and lower gates are both driven to an externally applied voltage that provides the capability to optimi ze applications involving trade-offs be tween gate charge and conduction losses . An advanced adaptive shoot-through pr otection is integrated to prevent both the upper and lower MOSFETs from conduc ting simultaneously and to minimize dea d time. The RAA220001 has a 10kΩ integ rated high-side gate-to-source resistor to prevent self turn-on due to high in put bus dV/dt. This driver also has an overvoltage protection feature that is operational while VCC is below the POR threshold. The PHASE node is connected to the gate of the low-side MOSFET (LGA TE) through a 30kΩ resistor, limiting the output voltage of the converter close to the gate threshold o.
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