ip2021c International Rectifier Corp., ip2021c Datasheet - Page 10

• Manufacturer Part Number: ip2021c
• Description: Synchronous Buck Dual Channel Power Block
• Manufacturer: International Rectifier Corp.

Internal Block Diagram
Pin Description
www.irf.com
Pin Number
10, 11
1, 9
2, 8
3, 7
5, 6
12
4
V
Pin Name
V
SW1
PWM1,
PWM2
PGND
IN1
CV
EN2,
EN1
V
, V
,V
DD
CC
IN2
SW2
Voltage Switching Node – pin connection to the output inductor
control FET is on and sync FET is off. When PWM is LOW, the
Figure 10 Internal Block Diagram
When set to logic level high, internal circuitry of the device is
Input Voltage Pin. Connect input capacitors close to this pin.
Input signal to MOSFET drivers. When PWM is HIGH, the
Output of internal regulator. Connect 1uF external bypass
enabled. When set to logic level low, the control and
8/13/2009
sync FET is on and the control FET is off.
Supply voltage for internal circuitry
synchronous FETs are turned off.
Power Ground
Description
capacitor.
iP2021CPbF
PD-97414
10