bd9215f ROHM Co. Ltd., bd9215f Datasheet - Page 3

• Manufacturer Part Number: bd9215f
• Description: Dc-ac Inverter Control Ic
• Manufacturer: ROHM Co. Ltd.

〇Block Diagram
〇Package Dimensions
１
SOP28 (Unit:mm)
BD9215F
Device Mark
Lot No.
REV. C
〇Pin Description
PIN No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
１
CT_SYNC_OUT
PIN NAME
DUTY_OUT
COMP
PGND
DUTY
UVLO
BST2
VREF
BST1
GND
SW2
SRT
BCT
BRT
STB
VCC
REG
SW1
LN2
HN2
HN1
LN1
CP
RT
VS
FB
SS
IS
BD9215FV
SSOP-B28 (Unit:mm)
Ground for FET drivers
NMOS FET driver
NMOS FET driver
Lower rail voltage for HN2 output
Boot-Strap input for HN2 output
BURST signal output pin
CT synchronous signal output pin
External resistor from SRT to RT for
adjusting the start-up triangle oscillator
External resistor from RT to GND for
adjusting the triangle oscillator
GROUND
External capacitor from BCT to GND for
adjusting the BURST triangle oscillator
External resistor from BRT to GND for
adjusting the BURST triangle oscillator
Control PWM mode and BURST mode
Stand-by switch
External capacitor from CP to GND for
Timer Latch
Reference voltage input pin for Error
amplifier
Error amplifier input
Error amplifier input
Error amplifier output
External capacitor from SS to GND for Soft
Start Control
Over voltage detect pin
Supply voltage input
External Under Voltage Lock Out
Internal regulator output
Boot-Strap input for HN1 output
Lower rail voltage for HN1 output
NMOS FET driver
NMOS FET driver
FUNCTION
3/4