S6BP501A , S6BP502A 3ch DC/DC Converter IC for Automotive Cluster0 pages

S6BP501A, S6BP502A

PRELIMINARY

3ch DC/DC Converter IC
for Automotive Cluster
S6BP501A/S6BP502A is a three channel output power management IC. This IC includes one high voltage buck DC/DC controller
(DD3V), one buck DC/DC converter with built-in FETs (DD1V) and one boost DC/DC converter with built-in FETs (DD5V). Current
mode architecture is used for fast load transient response. At no load, the input supply current is reduced to 15 µA (Typ). It is
possible to provide stable output voltage under an automotive cold cranking condition until the input voltage falls to 2.5V. This IC is
suitable for power supply solutions of automotive and Industrial applications. Each output voltage can be adjusted by external
resistors. Both DD1V and DD5V support the switching frequencies up to 2.4 MHz to allow use of small size inductors, which can
reduce a part mounting area. To decrease EMI, this IC equips a SYNC function that synchronizes to an external clock signal and a
spread spectrum clock generator (SSCG). When not inputting an external clock, it operates by an internal clock. The SSCG is valid
both internal clock and external clock. Moreover, this IC has power good (PG) monitors for each output and a thermal-warning
indicator.

Features
 Wide input voltage range

 Synchronous rectification current mode architecture
: 2.5V to 42V (DD3V)

 Adjustable output voltage with pairs of resistors
 DD1V
 DD3V
 DD5V

: 1.0V to 1.3V
: 3.2V to 3.4V
: 5.0V to 5.2V

 Shutdown current

: 1 µA (Typ)

 Quiescent current

: 15 µA (Typ)

 Load-independent soft-start
 Power good monitors for each output
 OVD

 Switching frequency range (synchronizable to external clock
by SYNC function)
 DD1V, DD5V
Internal clock operation
: 2.1 MHz (Typ)
External clock operation
: 1.8 MHz to 2.4 MHz
 DD3V (one-fifth-divided clock)
Internal clock operation
: 420 kHz (Typ)
External clock operation
: 360 kHz to 480 kHz

 Super-high efficiency by PFM operation (DD3V, DD5V :

 UVD

(over voltage detection)
(under voltage detection)

 Enhanced protection functions
 UVLO

(under voltage lockout)
(over voltage protection)
 OCP (over current protection)
 TSD (thermal shutdown)
 TWI (thermal warning indicator)
 OVP

 Wettable QFN-32 package

: 5 mm × 5 mm

When fixing SYNC pin to a low level)

 Automatic PWM/PFM switching and fixed PWM operations
are settable by SYNC pin (DD3V, DD5V)

Applications

 Operable on up to 100% duty (DD3V)

 Instrument cluster

 Built-in phase compensators

 Automotive applications

 Built-in SSCG

 Industrial applications

(spread spectrum clock generator)

Product Lineup
To order a product, select an item from the product lineup blow. For information on the ordering part number, please see "13.
Ordering Information".
Product Name
S6BP501A
S6BP502A
Pin count
32
Power supply voltage range
2.5V to 42V
DD1V
1.0V to 1.3V
Output voltage range
DD3V
3.2V to 3.4V
DD5V
5.0V to 5.2V
DD1V
1.4A
2.0A
Maximum output current
SW3V (*1)
1.6A
1.9A
DD5V
1.3A
1.3A
Package
QFN-32 (VNG032)
*1: Load switch for DD3V. Each value is the maximum output current via SW3V.
Errata: For information on silicon errata, see “15. Errata" on page 22.
Cypress Semiconductor Corporation
Document Number: 002-03396 Rev.*B

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198 Champion Court

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