PWM Controller. RP6100 Datasheet

RP6100 Controller. Datasheet pdf. Equivalent

RP6100 Datasheet
Recommendation RP6100 Datasheet
Part RP6100
Description 5V to 12V Single Synchronous Buck PWM Controller
Feature RP6100; Preliminary RP6100 5V to 12V Single Synchronous Buck PWM Controller General Description The RP610.
Manufacture RICHPOWER
Datasheet
Download RP6100 Datasheet




RICHPOWER RP6100
Preliminary
RP6100
5V to 12V Single Synchronous Buck PWM Controller
General Description
The RP6100 series are single-phase synchronous buck
PWM DC-DC controllers designed to drive two
N-MOSFETs. They provide a highly accurate,
programmable output voltage precisely regulated to low
voltage requirement with an internal 0.8V reference.
The RP6100 series use a single feedback loop voltage
mode PWM control for fast transient response. The high
driving capability makes it suitable for large output current
applications. An oscillator with fixed frequency 200kHz
reduces the component size of the external inductor and
capacitor for saving PCB board area and cost.
The RP6100 series integrate complete protection functions
such as OCP, OVP and OTP UVP into SOP-8 (Exposed
Pad) surface mount package.
Ordering Information
RP6100
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Frequency / VREF Options / Soft Start-Time
D : 200k / 0.8V / 4ms
E : 200k / 0.8V / 9ms
Note :
Richpower Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Features
Single IC Supply Voltage ( 5V to 12V)
Drive Two N-MOSFETs
Fixed Operating Frequency at 200kHz
Voltage Mode PWM Control with External
Feedback Loop Compensation
Over Current Protection by Sensing MOSFET RDS(ON)
Hardware Pin for On/Off Control
Full 0 to 90% Duty Cycle
Fast Transient Response
RoHS Compliant and Halogen Free
Applications
Mother Boards and Desktop Servers
Graphic Cards
Switching Power Supply
Generic DC/DC Power Regulator
Pin Configurations
(TOP VIEW)
BOOT
UGATE
GND
LGATE/OCSET
8
27
GND
36
9
45
PHASE
COMP/SD
FB
VCC
SOP-8 (Exposed Pad)
RP6100-04P Jan 2011
1



RICHPOWER RP6100
RP6100
Typical Application Circuit
Preliminary
VIN
3.3V to 12V
VCC
5V or 12V
En
5
RP6100x
VCC
BOOT
1
RBOOT CBOOT
CDCPL
UGATE 2
7 COMP PHASE 8
/SD
RF C1 6 FB
LGATE/ 4
OCSET
GND 3
CF
RUGATE
ROFFSET
ROCSET
CHF
CBULK
LOUT
R COUT
C
RS
VOUT
Functional Pin Description
Pin No.
Pin Name
Pin Function
1 BOOT
Bootstrap Supply Pin for the Upper Gate Driver. Connect the bootstrap
capacitor between BOOT and PHASE pins.
2 UGATE
Upper Gate Driver Output. Connect this pin to gate of the high side power
N-MOSFET.
Both Signal and Power Ground for the IC. Tie this pin directly to the
3,
GND
9 (Exposed Pad)
low-side MOSFET source and ground plane with the lowest impedance.
The exposed pad must be soldered to a large PCB and connected to GND
for maximum power dissipation.
Low-Side Gate Drive. It also acts as over current setup pin by adjusting
4 LGATE/OCSET
the resistor connecting to GND.
5 VCC
Connect this Pin to a Well-Decoupled 5V or 12V Bias Supply. It is also the
positive supply for the lower gate driver.
6 FB
Feedback of the Output Voltage.
7
COMP/SD
Feedback Compensation and Enable/Shutdown Control Pin.
8 PHASE
Connect this pin to the source of the upper MOSFET and the drain of the
lower MOSFET.
2 RP6100-04P Jan 2011



RICHPOWER RP6100
Function Block Diagram
Preliminary
VCC
FB
COMP/SD
5V
Sample
and Hold
IOCSET
Delay
-
POR and
Internal
Soft-Start
Regulator
+
OC
Comparator
5V int.
DBOOT
VREF
(0.8V)
0.2V
+EA
-
+ DIS
-
PWM
Comparator
+
-
Oscillator
Fixed 200kHz
-1
INHIBIT Gate Control
PWM Logic
DIS
VCC
RP6100
BOOT
UGATE
PHASE
LGATE/OCSET
GND
RP6100-04P Jan 2011
3





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